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 0x13c0cc958191dd306d6471ff25be028ee50b6c2f8861b509e5bb19da90b9de4e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff8fecd9-07bd-459f-bb48-6443d02d6fc1.json and https://artists.proofprofile.net/proofs/artist/ff8fecd9-07bd-459f-bb48-6443d02d6fc1.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 0xdacf971321baa117e4ce3972e4122397dbc4e8f08c119e0497909bf8335a8ca1. 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/BXADM1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f13f8254acf6dfdf241c9b1f7aa00ccf227f53ac11d02036ad4628e8f071a9f. 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/BXBOW1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6299607edecc260149382e994c8fe6fc5df1b7d391466c8d3f6999bb28d1191. 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/QZ5AB2079932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7055aa5aa8d7e1ec0ad63a364c550af192ecf5c3f42a6c87b50e30a37b44ab. 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/BXBOW1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48257058b2440628eac6c82d3f391dc77c8fbfc9e3d420a2a19994875a746f33. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BXBOW1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8aec1435b12c50210636c4e60906459716cf4d041089f301dab4376777c1da. 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/BXBOW1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29537d9b3017850881fe475d48a79b71b93dd753004c3b634d480f1a8ec0ae99. 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/BXBOW1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b662b0b37a65c91f0f7a913dbaee24df88049ebf128bdbef313e0070cfed8e. 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/BXBOW1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dbe9df700b607f2d01ee0cb7ce56792a86cce39bc390402acd91be273fd272. 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/BXBOW2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffa9460b675a6fc60183591284fbac81affaef46b2cf432ef8c51df7d38460f. 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/BXBOW2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8813f914d08727f097eef0040b5ac381792e4a743583dfc19f63e76d578cdb18. 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/BXBOW2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98726f7e029886f8d5a92de1dd7848c10cd6bfe7951a61f99106b5b69e915122. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BXBOW2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb29feb1261e6db545919175718fbed89a792916072b1f2be855658f7618ad3b. 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/BXBOW2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479eec7361bbf66c711a40879b50a778b108a47b3939d18a2b5a0fa3c198ffb. 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/BXBOW2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8b1bac186f0eea1324414c54460c16115aef15c433d3723ff4e5483a5981ed. 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/BXBOW2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63651ad2ca980b3d1ec136d9b9d70b1b731d261d7cd2cb7e7353c0ecb00a43c. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BXIV82431118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20470874f35b00cd96c75394cdb45158d0db5f311aa1557968f0ba5c543911e. 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/BXIV82495281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fb8d7c4173a8eedb51c3b6c782cc604ac41a4c05ad6e25ba1e64ff10d93269. 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/BC6M22431718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d64936b487fe76fbe56bdec22be8ae02faa82f50812db723cc96fe335570ec. 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/BC6M22501589.