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 0x30629bdb060afee2a46c500d7e69d4c244cfdf8f9cd7e38df9ad627cffac1d17. 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/f33f0158-ab7e-4882-a538-be5cc7b9ade7.json and https://artists.proofprofile.net/proofs/artist/f33f0158-ab7e-4882-a538-be5cc7b9ade7.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 0x2927bd7f38ffa2170ad891c9f050498e015249bff5bba7bfc6489d27ec94afa8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:33Z), 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/RUACR2200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1595db032862c8bd41bdbb0574bafa4a62f11ce2b2a307838334b430f9a08. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/RUACR2200299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ba62a515789f350619e4dbabd0bcdbfda48121ff20cb4007985b298e511b38. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUACR2200475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff0b1811aa5cf2b025285092f60790549a8f9a23ca28c10fd17d7d05b2d8f4d. 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/RUACR2200517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59702b39997e9413a30f2da51a8b8276c9d889484165ee95e6bf8944a0776152. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUACR2200670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631422f94ee917fcff3b9c7bf0220dd448ae3668eae73f0ba435a3a9c8483768. 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/RUACR2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c5932699392a4b9bdc3094bb9f95f926f4632372c1cd07cd08384d96343ca5. 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/RUACR2300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc860dcbe81284a5a8de00ca11282ac61c5a2a78353507b6f280afa78ef8d12b7. 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/RUACR2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc6317be4b5dd84dc133e1f90e1e85522134c482fb62bc711296f22f7026f68. 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/RUA1D2329677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad91aa2bcdfc59c1c3f443cc73265a26ac641127379989906c5e06ed4556fd50. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUACR2300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112fca0c19862cba80dcc00f4eba252c6b9bddbe13c806fa106ac813a658f529. 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/RUA1D2371384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffc3627f6152bbf76313dc6aa4b8824fda46d1b0ec1f875c1d2b8701823a2f8. 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/RUA1D2411356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0832d8d708d95f6805127b6f7f5daf310185b891b3217ea7d3a8408cda181ab. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/RUAGV2404087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0832d8d708d95f6805127b6f7f5daf310185b891b3217ea7d3a8408cda181ab. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/RUAGV2404087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a7714a713e40a05e12debf72d69c955b7d433ce346676482fa20f59ad0d576. 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/RUAGV2404089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05773d5eaa1aa9d7e8a9023cc8ddef077ebe6be5b54e342effaf74896206582d. 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/RUAGV2404090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaaf92ab2f35aa6ba697417e67e11bc9f485e38d436a7198cabe9112f71c13a2. 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/RUAGV2404092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee68e02ec84666c70538672ba511d6215f11b6a8b7ff3df8dc0d7a11271fa1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:03Z), 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/RUAGV2404091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd2d63fc87a05ecf1beeaf2812f9af2f655aee737d4466f0892a32fa8bce480. 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/RUAGT2489994.