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 0x2f204be823c7ddcd8f7daada69f8e288f40dde1530e75f37269830e98bf5cf97. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/119507be-9bd3-49f5-a082-d9d519555d96.json and https://artists.proofprofile.net/proofs/artist/119507be-9bd3-49f5-a082-d9d519555d96.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 0xb1a379bfd2ad3fa1e76c68cbca2e5057bfc83b8bc720c80633e6710f044f2be6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:33Z), 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/QZWFW2404505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6801281459d51db44ceaaffbd411d7ec59ddfba1919816ea5acffb4806bfa81. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFQ2406662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293431613987606713751fc1b56c46007827b18d391c201a4b3b44ad29edee7c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:51Z), 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/QZWFW2404511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0459091b444f8e70014838e7854bc19b7ba008670a166d32fbb207140917dd8. 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/QZZ7W2422439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665d798a342b2bb0cc4a91b6af4c79f7ae33e5952133e2990f0b40d3cab48f56. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ7W2422440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7419fb71096e5ef042a34ee0fae7469576e3b06da4397691e7baa2db98365421. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYZ2508938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4d997abebd3f5bc954e83bd669c236777ab87b194b0d4ecd5767b046bb11a9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYZ2508939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2695b7ebd63470597e56cc64e488f3a2ab1f7f5d8914d6fd0691f99b938d832. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZZ7W2422442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ffb40c4cf065821e131e04d4980a48a8ea550d9af0a9ee68306e33b6669751. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFYZ2508940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4efc38594c3622f0f6402cb62f8216fc01600964db05a995ad34a8c17951166. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZZ7W2422444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394c71de7fe3021adbbf7f212034a6d8874feb9adf0a0c45d4fe0aad57f226df. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7W2422445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec436ee91c4a953e8d2dfe2b0c0b492756d06a52ca4d0d7ff75c35b2e07dead. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFYZ2508941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87853967f2277cf8ed86bca80c47353601792318ff6b6658603fcb1dff3b278c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFYZ2508942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d3013fd844d7ea10bf04d8820b69ade3f787fabc0459e8b1847a05d015eaae. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZFYZ2508944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6969d78bf773769822eddf7a828ae0ea42d7ebb3dd961c477b8840293160442e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN32594445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6125915300c1fb99d8f9d454c9c939ca4f0ecfdd53fd30a5de7f172b7503bfd. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:52:17Z), 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/QZNWQ2501050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4e5add291a34ad2e9a11a71bc393891e9ba0dbe71e6ab85215f555a75d7f8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:18Z), 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/QZNWQ2501051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03372c5fbcd28e5fd5170ae93c51e6d0f25cc46c30f5cbb624cee3448c7a7240. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:32:37Z), 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/QZNWQ2501052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65a3ad9a3dae7188a24438968731e20420068283d86e3bbfd9147e7089cf7ca. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:21:46Z), 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/QZMER2599861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6969d78bf773769822eddf7a828ae0ea42d7ebb3dd961c477b8840293160442e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHN32594445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56847e37efa135a27498efad17518f9864d9ee2e877ae82eb13c615541f596c9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB32501834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317bdddd306e0b3fe8cb2cf4908ac9ec8ffa2c0820498bc5d0d3800da7001d59. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB32501835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b9560de34530e693627bf0fb9ca1d2bb17f27969aad569cc9a31698a21447c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZPLS2534891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a44c5811da8cea287f974580abd8359164839b32620c36b235e9edd49844fe1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZPLS2534892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757667c740d377cf422dc6f89118c02c4519da7539b39f9e288d604436cd29ff. 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/QZPLS2534893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0b6e5f2071594005da289e55acac6e61c3b118995d3594bfc1424549ad50c. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZPLS2534894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3517a9d8a5fb5e5a70012d054cf1962543129314409d0cb2c23b8b0d7fe8883e. 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/QZPLS2534889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ec975ab91eedb45b97eb171ccb19f5ce0b41d23d7312da5da344a4ede0557. 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/QZPLS2534890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a44c5811da8cea287f974580abd8359164839b32620c36b235e9edd49844fe1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPLS2534892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757667c740d377cf422dc6f89118c02c4519da7539b39f9e288d604436cd29ff. 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/QZPLS2534893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0b6e5f2071594005da289e55acac6e61c3b118995d3594bfc1424549ad50c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPLS2534894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23bad00cdccfc40d24cfa7c9dc689e2d789e54b2e4da6b459d2b88e84440a6c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB32567676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc2b669db6c858b8d38c3a9ee95bf094babfba282cb6cb13a4a9c863912bd1b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB92594373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415748f7c16a2cb4e710ca24fc8cfdb7104d706ecce9b93b739ab8dba3fde7f7. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTB92594374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268e0c6ebb6b8f089e93e30f5d0d970fd4fb1dc32f6a496f84d3c73b10c651b7. 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/QZTB92594375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acd29384758b2f240f9a34631896033e51452b24c40b5d984debda6bee942fc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB92594376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7e221dc69f1acf0be50207c4d113db6aa8ed15f13a5dff000388c4ca0cdf10. 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/QZTBD2578179.