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 0xd17711ba82842a59acdb793b5d3defee7479c790ac3c979107d612f94f5d034c. 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/b35d0213-7cac-4f63-9be7-abea16fc3424.json and https://artists.proofprofile.net/proofs/artist/b35d0213-7cac-4f63-9be7-abea16fc3424.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 0x3dd9e04636d9d97215f05055c034d658e31706bc42bceae1598c461226f2c377. 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/US43C1629682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc6a7e9e39ed63ef85cab180dff087155e4a734694b962f642274da4d6bec60. 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/US43C1608482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab9eb6446c64b681f427da2bbe1fb486e0e4ccd19b29ae63b93e67633d374e7. 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/US43C1608498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8cd584150d7a44eec8c8199bcf14cac30e8e7d99845d9b9d33bb19a7eb7377. 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/US43C1608492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b94d8fce717dfe7ce84defe5c602f46cd9f9144e279d41e9d06df12f8712c8. 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/US43C1608487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67134c71a70e4e140ba549394a7886f7727b9a9261ded33d45977181327ccd0. 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/USQY51767893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28126b16e3b0edd123219959528912d9c4d03cbf412751aa83f5e5a71c43fbe9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/US43C1608484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1864125f219c2ce9b26d9724772ed1fde00869810fd09b3cbe5796b986d8c0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:04:22Z), 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/US43C1608495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902d43de9869dcce1913958b73e7c39ea6f2c93db427c26ccf781e6556a35593. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US43C1630595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82180b1a3aaed76323b988a90152853909aa93461ec08fdec533171a9e7bf08. 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/US43C1625631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8bed6471f72d0502d3370003b063e64f916bf3ec6205a1508d68ee74ab5760. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US43C1625637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c91b44905ab8124006ac3f7fccf25892fd564bb3403833932906011c5a054c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US43C1625634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9303e6adc8e7293a5e0b9749540eca993c7180deb6cf2f31dd7ec1bc4e228dfc. 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/US43C1621496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280b7d8f7bb23141ab2cb9be5d2aaa9e82d6ccb76c6344767daebdc18f4230ae. 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/US43C1615602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e62723358eb59cbea07ff0cf4e54721f2b40c44f44233ac4264500d3a64dfe. 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/US43C1615605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c788818fd7837681c86595b0bdb3b80907801c544338916a02921fca3c5ef9. 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/US43C1613902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60ad5dba78456e3e325ab8592747c5bc6d780643fca772329c779d3ea4b0600. 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/US43C1613900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869e7407af5432cd0aed08a98d1cc85334ec9a3318e7290e6b39de77d78b3176. 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/US43C1609709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b65745981b9c0daf14a5f07391933c285f9732046476f3da5c7f1d7a8465bef. 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/TCACN1684505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02df24e8f1eb1e4d3985769b474187ed65604c531bf6e95befd5a4d0b8f14576. 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/TCACN1684506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd972c917b4f140fbaa4b9c82519c35cbc3b1ea204f9c46674854f5fe1f9e8f9e. 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/TCACN1684511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd3d953615b765828bf6243ff7a16a9751ac060c094b4ead83570ecf819682e. 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/TCACN1684513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67134c71a70e4e140ba549394a7886f7727b9a9261ded33d45977181327ccd0. 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/USQY51767893.