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 0x88b90223bda010c7f29f510219da1a1e7242a290d976c7b92379486d99814a62. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dba334b-e611-49a2-a877-922f96713c5f.json and https://artists.proofprofile.net/proofs/artist/0dba334b-e611-49a2-a877-922f96713c5f.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 0xfe9d480e13e5f18ace42034c664108f6b9797b85ba626f14c16ff64074a32447. 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/TCACZ1764774.
Hold Your Breath (feat. Raquel Rodriguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00cd776ff535fcaedb9bb7301013ce555397b007447a7a03b1d6531b945e7d6. 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/TCACZ1764791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd5511e0a024636508881c48c82d5ab7ca97b32e6470585ebc87ebaadb86752. 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/TCACZ1764792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acb8790a16903c9ce84041e5fe2ad726632957fd0841b446e5f5d0ca0360336. 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/TCACZ1764823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe686049f7c7013745ea9203c201c20488de1ef225b40c49a8c24d364b17fe73e. 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/TCACZ1764826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b3b8f381c3ca07d9b5f5d5a8e92781a80356346f119707feec41fbca1bb1be. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCACZ1764827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5d98e2bf8424d62efc0b711e340c3d434b81b97ebdf9fb683f569b7d79f31d. 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/TCACZ1764828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b0f9aa7a5003a6dbab4b0da8e2cc6081c70394c4a933f02a364f8f887e791c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACZ1764830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82056991ade4ebf77e9cbf2629bb1cdfc8c6bdc96851876f7af6e5734ef5a6c. 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/TCACZ1764834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bf8df5c51232eb3f17497d2a6ad36a90775780c2d40ecc06233bf86b8033ec. 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/TCACZ1764838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75030e69c5996aa5f5e686c77b12582e97daf31f47c39a8fba89bfaa38b20c0d. 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/TCACZ1764839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e59ea8becf94ad28c30df9967bc09e9abb600f350532cb44977030bf6a5888. 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/TCACZ1764840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aee4d9ccf3f812cd7436eb2d09b28f234c69f2c4052e944a6ac967cb5cf8472. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:20:34Z), 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/TCACZ1764807.
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 0xa5034c44edb4ad70d5c56f5d4901fa9c064993950952d3a90ef0c0a537d65314. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCACZ1764825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c17998ac1640149c9c21cba2d0f1c6d92fd6733e0e3405419961c27942a8a1. 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/TCACZ1764833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a3e89fd04d774dea98634f15596bd0203ae5a5a1efac4ad539ca96f6b0b922. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCABW1423801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973094d0750847c23bf596955b744fcfc684e1a9803c33ab71c4159b41943386. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCABW1423808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c95a5c6550e37811739ae499663ecb4fd3a0278e92c65fd7267cfc6087da37. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCABW1423812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4433ca7d677a92f566fb31a57bf0bc5da042047ac862a42c95fc4ca400b150e0. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCABW1423814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffdd7fbc29be693ef87106fb477d5d34e5afa48fc9ece7b2a30c0aee158b1de. 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/TCABW1423815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743b25579f755dd6a112ad0a60ac0243a4ace52d27165f80d3012c3ede4f979. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:20:16Z), 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/TCAFE2015107.