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 0x766652c04d681ef3498caacabe5e0d9f7839882e1e41690c258760b906f8a30d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b6ee959-d2ff-43d4-bedd-2abb4191952b.json and https://artists.proofprofile.net/proofs/artist/5b6ee959-d2ff-43d4-bedd-2abb4191952b.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 0x577316f082dc970584b6219c60b7fc97c7b8c8053fac8ffd45e624003d7a0312. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX281716600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684d0bfadb741d7a9aa4394bc18e0e5d4384ee1e2b4c0637f3a1c5d887f41d4e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DELJ82031469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3221210c187eea6ba742a8a041114715a365567bcf986705482f07552ee08d24. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR26V2045065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3a95e2999e9fa92c433bbfa0e051ed7c76100afc329a51c9afa31841828981. 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/DGA062064262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9802d49be96c1244fad366696314076c6d7015b0a24f4b0c7c18ec75c04d0b5b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR59R2114459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc0fa7640e765c4b4d3a8b4ff798b799f0825776ac14a4326f0e439a911cba. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX282182602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee53048dd55de6f6afc1edeb34816e2512457143c534d2ca0790a187472a2a57. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:50:56Z), 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/FRX762152533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a752eff32fb272bd3c414d4abc93b6d61b90bf4c37e5eac1b0e58ece6dff314. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:20:24Z), 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/FRS182107916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28964ca63b49b231f083322b8f23beeabd67f6fd7a35a73486ff828688819fe1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:45Z), 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/FR10S2240084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21fc4b56c42ddc25354f6da328843ae00304f202d7288db905a67280d5d42c8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:56Z), 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/FRX202275105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59fa46602d1fb1466ae1f1a256d6ce1ddb8cdde9dd6f8993cb0d635bc6176e3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:11:10Z), 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/FRX872234403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59266c44f3cb1fb13c32ad8ca2234c620d0529594d00c02027976aa23fca2cb. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:42Z), 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/QM6P42354320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939db159fcb9e59b45786e0effe2018ef840bd3bc7fbfac5efe8bdf27e100bfd. 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/QM4TX2309722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4835ffe013076d449c1a8a1395becfb1183bd2651c2545a596bd41fe2b4f095. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM7282311552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7e17760d95ac4757fb8a0bdad2138d13018cfc8938b4e71c0d98190660d1a8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA082334359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242fdc7276a9ea81887268450cc3918def13b8988b00d69782e9a30628581662. 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/FRX202570340.