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 0xc883b15fe7ceb5b57395855d2e331a5fb3657b08cb0a7e4aeea512e4dd395718. 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/b5867fc7-c54c-4ed9-a549-06520ae0349b.json and https://artists.proofprofile.net/proofs/artist/b5867fc7-c54c-4ed9-a549-06520ae0349b.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 0x272b47c258324b43fb93e9d6f858a6fee77024f1e44c972e5c173176c2df52a1. 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/USSGI0517000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70de097b6488769de1deb71ff8713e2516acd1dc46a6a910ac83816582efa62a. 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/USSGI0517001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8ea86a8b64d95c9fc9628c35e6de91d47f251cda0a50fe6f333129ff7c211b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSGI0517002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521c1275af3d919225cfc63da93c891496e2c69f0f303aa71d8d74d1b41f9c04. 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/USSGI0517003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a0ab31dba7277a5e644e450a8e086ec2d7914225aaa6745abc281065bf7107. 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/USSGI0517004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36afd78970913635a842d4f7f99e615632f1b7d802a8c7e96060c45733469c81. 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/USSGI0517005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76661ebb1ad76f86e146539deea56bc353644232af75dcf05da70cdf1bc03829. 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/USSGI0517006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed37792959d0cbd6d8ac5ebef24300c7eaf4e4ae62cd5acfa2250d8213284fef. 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/USSGI0517007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44758123fd8f83f4647699db979582b74a5ee300b992dba975b13e346584d0ee. 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/USSGI0517008.
I'm Just Here to Get My Baby Out of Jail
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b3763b3275902320e9ef87a86d49fd7eff5ebcecdaf86189e18a08d6c3df6. 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/USSGI0517009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102de00ab9db1a46ed963a1a8492e5bb93a48736e53bbdcac7faf2a886142c0. 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/USSGI1935001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027f986949c9da50f697c7cac2ad8da077ff733f80ec4e9b5f1cfb38b2a71eee. 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/USSGI1935002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a145fbf7baa67fbc1361fb3b9e2498aae509d222d091717a2c47a39fe8cf08. 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/USSGI1935003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3a27dc6ae059b835e6844b7237cd44cec6117035ced3278d07bd943b97999b. 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/USSGI1935004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143ae1e2cb4c05f3a3d534afd6b8f4b1f72ce722a975ffb00aa0e1f8de6f6f10. 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/USSGI1935006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d901577e6be4338df5105b9f0432d4a255c473675064267d3c4c0c48a4ebd4. 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/USSGI1935007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8700c49b6300cfd05299237ee32bd2359401fc49dc9dd41d6b6d62418e8cc9bd. 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/USSGI1935009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37b9cb54b7232c3574bd54019a1ff0c15a1744f81d9dfef46bbdce98bf73cce. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/USSGI1935005.
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 0xcce1c4919665abf312a28b0cdbc3d26078ca2909d16d38ab1acd01cb05c78aa3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USSGI1935008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5228778d113b63859c605ca5456f5a137e3421f0dd25b28dfde79c03796a563. 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/USSGI1935010.