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 0xc519adf19ac72c0d442b67e35e6695f140136e1e3fbed4a9f9aba13417b2747d. 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/4528f99b-8e80-4ec4-90ee-27f6b0cfe404.json and https://artists.proofprofile.net/proofs/artist/4528f99b-8e80-4ec4-90ee-27f6b0cfe404.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 0xc072630b5a8affee1134acce0f1603dfe2b85279257ee071e108eb8d8f614f97. 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/FRX452030266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34a88d24bd679319c728068c759b34b4f8cddff5619db27836ddbce042f69ee. 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/FRX202535984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0510d0fc61e61e80d127b92033156fedbe31d7ae56532780518496040901719d. 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/FRX202567359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893a07d56e5e9b960ed096887433164e46461a3020dcfa1da03d6c89c75a6fe5. 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/FRX202567360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a960047e4843db2290de19e1e3207ffadf5e64b3c8245b24c168e9542c1dadf. 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/FRX202567361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b85e24e35f45a9190a07f19c8eb491855389b0bbb11d3821bf3438ff712fcae. 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/FRX202567362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180e0793e6f793d21c9ad49dcff4024676305bfa75cef4a5f81197fb09dc13a0. 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/FRX202567363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c81e421b8bf715aa31f3935ffb12eda831f261b4be67dabab588b365ffb4e1a. 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/FRX202567364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b98a017adaae9a809c84356f39a9ab39b32bda227a5dbc951ddd250b43a4c87. 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/FRX202567365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747ef11886d672ad0fdc5f27776bff36ac9e650afb3444ba7c915d23625479d5. 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/FRX202567366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95862150f2a8a239359e87c8997446ad695311ebe9242c8d19460144e2c4590. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:27:29Z), 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/FRX202535985.
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 0x20e075297923182d9ca5a7117783372a211e91f609405bf5397ace8b84ec54fb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:05:14Z), 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/FRX202535986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21b52b649510c76cd2df8a541b550e19e71f181af1f8d01e599e0b7a9172c80. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2583166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fac96aac1c7bb8a30cfb93a618456af52ef9b6292b740a5e5d56c92d3b47399. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0R2464899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8454b43272f9f2ae8e740e4f53bb5359fc16bd7bbe9cc8499e2bad80450116ee. 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/DGA0R2483834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4562b5e72e5045031c80164b5e1a8810874e4c9abd7aa4a5470ee7c820d59f. 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/DGA0R2483835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75cfa19af2cc77a8a88f86d16fec2f874d0009092016c585fe3968f63aed096. 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/QZZ972326504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd535c2a45650c1bb26d0413f8e2f1ad13c919216ac7c08286f80a8931d974a73. 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/FR2X42443945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c3a730f4cf3f779b8b77a02a1a5136b3453f535b558f8727b3a97bdf40d8b0. 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/FR2X42443946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53ceb33b618a905d63966b8294d9c1c6f51de750a79f8447d95ae743e813375. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42443947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836e2497ce99fc9743e35b6952e972fc47d4c3142c3a4c61b2b54cd827cef21b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42417633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14fa0876025355115e74e3f8011b7c27548da579a26bb45761938a91a8cc2b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42417634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c97bd76966d60476b66e4f35ae8be340a036c23eb7b976c9a0dde751ac56b4. 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/FR2X42417635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe7918e4aea115813a5b8c73f03b4f757708b060b313deb6caf77f1d2389ebd. 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/FR2X42417636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2c8a290536755501afe6e718280d76a622ac8a923dbc955b62116d686d688. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42417637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a8ef3a862d523b7fd5ee375a3fdf5f3420bf5675224039cfec8479cf248ec7. 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/HKG732122480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb61403fe8b310b6b8af3cc710c1bddf5e94d1113a5d9f02184f3cd61706d83. 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/FR2X42476562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b04d01fcfc452d61a944565996cd755d30864ed2af6a4f2876034112b96d31. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42476563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3178c095fb175724fd41beca13cbaa44d7d9df9d8f9bad6d4ba166982defc5f. 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/FR2X42476564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05df1cedff284dbc05528175f974432f328892b51b61a182107b4a2cba30a24. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWCT52206732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19884d5c0efaada3bf0bfd00cd10783f1d7822e28a94a40974df1e67c08b51a. 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/FR2X42476566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6150a52718dbd22cd1bdcb66f10977e1ae4f0eea80ea7071300a699036e3ecb6. 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/DGA0P2465875.