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 0x644d564ff3fd8194b0c8aaa374f78f4c6a9951f6c61ece933ea81bb393a46bee. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbe2f98b-db91-4423-a741-f05566b2977f.json and https://artists.proofprofile.net/proofs/artist/cbe2f98b-db91-4423-a741-f05566b2977f.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 0x293bdee036d32f7af24bd32f467986b5d7f5c8bc408b2f65302671fdfdc36f88. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:46Z), 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/GBMA22351251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526c341ed228ff39911d3b9e68d1bcc0f1fc7f01bf12e0765c1458ea20e8d0f5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBMA22351252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec64d9f3995ebebc2b2979e27e29cf454a65b83d8ad1a6a8b779c5be2278b7a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBMA22351253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b06c5093d1f87e4591e59cd7f4453ef9fd61f61a73c9fd2d4d9bc1dd73e180e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:36Z), 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/GBMA22351254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2ddeab15146609246a75fcdb12b8301409555651f3051d73cd2324f3bbcbe. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBMA22351255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0c3b3970b9bd17ffe5a43653ae9cd166de3a193497629405896e51109f6b54. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:56:06Z), 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/GBMA22351256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82315574f19a844a2bbcf4e73829c6e134e7b21549dc94a71f04762e07dbbb38. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:11Z), 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/GBMA22351257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d6f6e569f39efa643b18fd14a8a2cbe21a67990c26b3dc4b40701abe57433e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:06:04Z), 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/GBMA22351258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292fb571a9bae2c80d6c5d5ee029f065a6fa91317f82f66a2866d37249b81103. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:03:35Z), 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/GBMA22351259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6638995b3a4fba45a0829cc6da884fbf6947a9b67fa57b71f7a6f74108dba6. 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/GBMA22351261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62c6c09dc58b02bff60b36631ae1ea1fb930c714afb63d576320d640439cd2d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:54:07Z), 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/GBMA22351262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ad8e4a6dee13784fbbaa32412d436c5f77f1df18561c8358ca38e52f8a6b92. 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/GBMA22351264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f534fb9668fe68d226a3bcf42855eaf4d88aeaf71e678082348da9be8ff2172. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMA22351265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d30981dd5963b75cb1dbdbb1abaca35be894f73024e54207a5f6b16fcc7af6. 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/GBMA22351266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11f49ec01c74ce6a17d563fbc5242b99ce92b56c188347922b92d382a09ed99. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBMA22351267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9451a53bfc67111d1d698d39a564c11deda575b7f575462cc902f66d5ee402e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBMA22351268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d22ab73c26eb70f8cdbaf77fa506e524dc42a65e3a0b8a69cdfe53a697c984. 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/GBMA22351270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bd531c4cd7a4fa296570dbb382d429403603fce08a1b764e94248f2589755d. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:05:33Z), 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/QZDA82562408.