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 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 0x4ed3041f71381fd88f00e83c8020cb5f39c705902c60cc1e8976d2eb9a6ba37c. 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/a279d688-3bf2-49a1-a4a9-2bff89ac5b57.json and https://artists.proofprofile.net/proofs/artist/a279d688-3bf2-49a1-a4a9-2bff89ac5b57.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 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 0xdf5630c34290a5df82541b9e5ca1ae964946fc0132b6ea97d94b898314e535cc. 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/USL4R0741986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02adb50200616facca5f1d203ff0f44db304662487d2ca4b2ed753f59521faf. 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/USL4R0741987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd8acbcb3a732d79ace8af3e1700c9c995da30004d019e808f9591b8ca5fa26. 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/USL4R0741989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa1d2a8713db355be05d1efd5d929acd81411e0ed7133086e760fe8531a2b37. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USL4R0741991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468cdc209373e2086e427adbe0126868db2c29cb0e989f96224d54b9399eccdf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USL4R0741994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603443ca02ab34fd874be9390ad158094a8fcfaac66ede9ac4009a81f1c1c146. 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/USCGH0990791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fe16ab6e401190352f923abad4b0782d38e9e166575628c3a889e0c48f1ce6. 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/USCGH0990793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ce3c58841f49e88e48ca61834fe5b04a183a0060ee51e5ffce791c588232c6. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:50:31Z), 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/USCGH0990795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d786413592e98c3067a71895c9666b42034ec099e4ae8a54b914f85102bd2d5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:48Z), 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/USHM91031106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f836b52606946e6da26458b13266d44e1190988a93dc20913c9c3f6005ead20. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USHM91031108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b418deb1f0df7a65d14051ba1de8fe823ac6ee7dec06dca1d13094da0a14d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDY41642911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe178735a6c8bc3d1e96cf0c24f2c7ecc8a6df0ed8abe42f0bb0dd35faa047260. 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/USDY41642913.
Panama Verde (Third Man Record Booth Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836de32a4b3afa0a24cb0e031c339c7305fd7a9f8f9d478e34e1cc3cbf4f750f. 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/USCGJ1945128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03edc2d807464081f498d32ace7b0b7d01f4b4dd271ef8fac816412537d5ce0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81996112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15a91caeea2a9d1dbecce21201796f23497a6fe10dd4f9eb8f74cd10eecab7a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:28:42Z), 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/USCGJ2014815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b97f286638eeaeab094d418780716df018ef765b82969820202f426494b35b. 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/USHM82092651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa90a81084cc09a8536e36a9c4c1040aee54ed28e04c70ec2fe74d3b40efead. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR2X41991219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5787e03b91daac9a07981df39e9185b53e408ddcd6e37daa27549a08c90c460a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USHM81933126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15a91caeea2a9d1dbecce21201796f23497a6fe10dd4f9eb8f74cd10eecab7a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USCGJ2014815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e521d4af3b5f2cb0d11430616f1e0b80ec29f92720e1c85dd6b1ceb70668342. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:38Z), 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/USL4R1801896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc4eda00024a5d7e4e1fd5c49e1ef24571f0eab0a9ae452b949a282a8560b7c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USL4R2209777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23caf6a359ac1e5fd0ce8e9eb21eb375d60584d8b419187bd013abf146a01a4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USL4Q2291007.
Medio Alcoholico Melancolico (Tropical Tapes En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfe5e17438eea956a32e731da7366a056feab2ad33177ca1ebb73b878dfcafe. 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/QZK6F2448173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd6dc24293883b46b80a5acc200f496c7449a6f41837a32832bf2bf49e971af. 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/USCGJ2248033.
Radio Metropoliz (feat. El Kid, Cienfue & Rasta Lloyd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe81159c426a5e4948266bdd97e92572d2b04152968ccdf190b6d96eec484032. 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/USHM81847440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51aa3d3ee2b69e38f54db4ecc47132283d9a5072bcf1e7e223304b93b2cea93. 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/USHM81847441.