1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3198b38279639bfa0a3d400d47b647af9565e9705e65e6ef2c5f1e34da6647c8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf41348b-7044-4e60-869a-c49d08a70779.json and https://artists.proofprofile.net/proofs/artist/cf41348b-7044-4e60-869a-c49d08a70779.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff9746580493f6e92d32be92e8776cf4fbbf101977bf33bc978d207051fea5d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340901610.
Bailando Tango con Juan D' Arienzo y Su Orquesta
The History of Tango / El Rey del Compas / Recordings 1947 - 1950, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba036f4eb76fd2ac4564431cec91fb47c9fe7d41201091be8d312e7ece4b33d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8636d668cb33a285b44206431e116cc65b2dda7abe106e52fd577c201619628e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31281d4018930df721421bc634095b5c7f61410c87336279a7be27aefbb6096c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9b01632318882c3faf97207e09d6cf84d031b3149d972b0f973fd94c7f43f6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53c3c6f6b5c636a87d2c04387e67b4de0f6a9c7c280d7a071d068aa64d12987. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3ab1e1694a107bb4b175b456e5775429fb6051aea1ad626ee17450eb7729fa. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008306.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab799d406a7c568c8ea7f2d17e48fa22db2c8957328a8b00726251ed6a9b8c2b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e908323726f27556de3b0aba7fe72cc2a61845cc95aca7bbaff05c861ff1040. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d34991434a7259dd9761641f7778a46d6283d7cb7f6b402bd9225bf26f01a6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a55ed4a05217083e7ed6cd7053a7549fce517bec91a033a8df7dccc9fbe2535. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008317.
The History of Tango / El Rey del Compas / Recordings 1943 - 1946, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1788e192522e47a317f64d08f2ac382584fca5a518d1c4aa7fe754fdd202db48. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53e71ee07c83255c506c8d2a989d25639d8f56136d1af861d966de9ded1d756. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d218cc99988425fec5a563b73d22642702d47a4784eb33668888359befc997c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1c0bf6eabaceafdc10f5add543abe6ca81c374d53b81e1a0249d163cd1c49c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ab406fc3fdc0c1423934f2191d1bdb790796ff5352895f81bda63e1f83e85a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb04baac1f2cb60181ac1d1be93638c62c42ceef8965dccbc0427a4cfa2e9a94. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621ce6f62b956ae9b4714db9c6d69735350c28f952a8b05d2205d1d081993a47. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e0267de9aa7157ea682c5a155a0dd8509217c5d1a7e35683e38cb7ab5f565a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa686edea3401ac88406f29ceb5b45d395275652df898f706a392426f20fb219d. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c16b958de217a77d1f78f63cdf528e907ea474a510ee8559e4f90225c3c861. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008215.
The History of Tango / El Rey del Compas / Recordings 1956 - 1957, Vol. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a69ac3d48e1d1e247bbeaf1449344a938e6251da2dea13596b406049c45966. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9647ec637bc5f3ebc5731519ef11b4e2102d2de33b0654252e6ef95838c981a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8396134dc31d093c2f6fd23c5be91578122a7b315cd838afda258f7241e40e0d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03779c9be7c13746e6ccbe92b7b19cf7b0569a62746bba9ce8a631719f47a15b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c7ca6eca8e0b4cb6e9783819795c4bd19f72e1089034fc6c51817ad88075db. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693abf51e6145b95a382421a2a5305a9cffb1032234b75d83ca4a79cf8b3c0a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabb04a96830927f37024dabc1dbe7b971798efc2f2f43dc0f0bbfae36e4a84e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec2b37793265f1ad21acbc365f704d9474c33085f346b2ffdff11dc575bdcea. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eb4d7b7e9820951d4142b3eb65b6a3c6e883e655f9592fe7b6d1563db9b468. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ed2caf590aa054d095aaa328db2f10790f4df64dd792af973734fe29ee4d1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008620.
The History of Tango / El Rey del Compas / Recordings 1938 - 1939, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4c4c505aea56b93bf655fc27adcc3b2e3b7c1ef02449ec57be16e3f0ecc514. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:49:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911df5eb6dca031b3407f048a82e486c31375cf2e69bc5f99c95b1d041df79c1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6a835e08a9a75756aa70028b2daadb169525e9ffd99f9f1e49ed46ff9caf6c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37972b39e4406c96fd087b902d33e6f295cc5f48fb615a11d8ad2bcc436f544a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f68ddd333169a6d1a4a9c757f979057f9e59cacc014f7f189207ca71d42f887. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc733e6c35442eb4d493f625e091d0220c797a9c634dba4292400ab270b8b8cc3. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008019.
The History of Tango / El Rey del Compas / / Recordings 1951 - 1954, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa588ded1ca26a7b2ff8bd7e36fed764d537c6c6bbbad805856c6c92f10dbe93c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc4801cbe278ffc29646159f4e42d2d69a92699a3c8f2e85a1b7e219badbdd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40771e7b0614f6e522b51e52de662743386ae04457a97aab8e7556345d813b7c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b4e08ffdd88350c77b855804e93f607eb34d8e421a7b56f89f150cf73cf4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87bf6da5c662638e2784c848a22568f0fffbd1e9c67f5315f371e1470923353. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e86870e0e1ef3aadcd9f4387289bac04674753b289a99457e9feaea1df5de06. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a33c8a7a4d7615fbdf401b5a8eb5a4205c17966a6b3454f9fba9122c7f8559. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344d795d015d24a239e2394d1674a7788bb1d4f842e30f874380f1477b380d25. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5082ada864165f45b630eb3e8027d8c362c0547cb1db18bd9a3d710265cfabc9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438d8f6058bfcac39d68eac916dd01a33b6805294a66181768f759c13f74593f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644e93b148c8631c30f49afc069dada1352564dc7574cc0b9d1d92e9775e3ff8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67844a96bcf5af1534621b263c56c7c19b0d69f59211b1079c4ef74de404238. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df6bfe62cb4031153aafd5a24153eeabad11d2aef895940e8f5e1f7b26257e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04896f0a553e3ef6b033e6530ea0388b0a65fa6a9ec7a3046843922d15082bf. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2e775e612025fed9956f00d9e76a06bb81f3bb433bc89f65a811f9179acb64. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b4df8a809d3e58747f1d3ee359adc0539b38c6cea128110e30041183160c45. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008418.
The History of Tango / El Rey del Compas / Recordings 1940 - 1942, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b190abd0ce1a389aa606423db202d44ccee8cca4ca4deb0ed23a1ab1415e71. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436af5a637a5b8b9bd434cc0df151b0500ebbc30ca77af5c91d261eba783ee2e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008113.
The History of Tango / El Rey del Compas / Recordings 1954 - 1955, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca4e7f576991628b4c1dbee1537c0f4f23fcc5589a50f8114acb9373d6b74d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c9c0be58cabdf7e8de8834c52645f94c4726714335b882b1d10be519df82b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c898bcd0fef8dda9f3209b722fa3e4df939fbd6380f5fa5049191fd35fa8de6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14be96f777e01a297bfc391bc5b4a002f6c856047e7561ef9c8824134231ef3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b51c40193aac78fac88a94f4167676f20bee04f5ae8b9551abd83e06edd60bb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf061204387bd2104dce8b2004a5c41eb15d6885d5a5aac89a2cb96963931ed30. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fad8b12d1ac66d4ed3c58204a602c2f1402c3dd5235f2faf363a9b68e5e9765. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef3e23a6b1722353834b53d1fe9a1947e97a00161d951fb3abce703161a7724. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dbc86e5482739793620c35208112002d8084a9e2a6d36e4b7b4ccdc668d308. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18021348ef95516d0e06267d9a1c97785bc192c481a7abb92bcb5940d4859754. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2585e4485f879a5423d0ba2a5920b34ad8111602182559b3dea075f2bce2626e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008515.
The History of Tango / El Rey del Compas / Recordings 1935 - 1937, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b09c59408d78b0b37729084cfdb3f1c4f44934298b9d39b10f3a7f8f2f10cb4. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11007904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c35a1aca885fbf43772a9a1fb0dd41a8685fb62b3d3958a624f0df80b6e49c4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11007915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979ebfa8f9f265efbe0f6d1d31073d62f1313e117ec558e32b4f46d234ffcdce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11007917.
The History of Tango / El Rey del Compas / Recordings 1958 - 1959, Vol. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5e4f486eba87e4fef29ec9cd269ec9fe5968ae3fbb658483fb29af9ab08e0a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210bfa2e12324aa797988dbb28abfb70e37928e2fd52484558b672b200392537. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938dd16d211ad7cae49903dfd073ba4f2ad04a0db81e4a03adb63f91773dcdbd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c7c5aae1f1a499c73f0aaa3c91a08f61f515f830d1c82b9567e4c572769586. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b31d2e918b79445201d0a3dd2b59902e0ac8c8153553750374b2a1e804fe3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a1a38a2fc1fe963f511f9c3800fdecb836f98122e2cde69ac166f434eb7215. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff5642cb527f2abec62120dfbf577d3cc426fe8d599dbe3f4da3e1bf0a385d5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2e64762ab7dfa4d0e9fc078f49096520da95a89761b0e7036e99d3e8c9fe8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc08ae9b74b42d664a7a7b9a3da55882fc00c3d0dedfdf2ebf97036f73f73da. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9732a69b837383aa0135c6ee1eec119c02089fb1033ac1124540915d954ddcdb. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11008918.