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 0x3f07284ed844d6246f080003e62a92d4bd3ab4fb16aa20caebc4a8f5c44d4005. 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/c1abaa92-cc3d-4956-a4bc-168d5cdf54f6.json and https://artists.proofprofile.net/proofs/artist/c1abaa92-cc3d-4956-a4bc-168d5cdf54f6.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 0xa6284edf18e73a3b202a9e5e2a709685a1a2d5be7213a5c339401c7aba73ccd3. 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/BREKG1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fa545b8da00ef02d9861a271855ab4db3a19e4b360be484ce418044ceb79df. 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/BREKG1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f619a9523b2ba2dab57c407f19aed35fd74e3d840a9b02329faa28dd59e601b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/BXO4N1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82489a115186114d4c70b6c7b5f2ac56e81d76a1553a0da9aead2ee5a94a2af8. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:20:12Z), 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/BXO4N1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2856b33f6fdc144819a14b5ea01e582002be72fad2a9ea7a9897862638bfdbd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BXO4N1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f147e3e2ad9c46ad52fe099a9e90acbab10e84055e3fc0e4e4761d1a7f427. 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/BXO4N1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf36d629a52670ca8bf47169b6d51951b795b89499a89032b50d28b9ccee463. 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/BXO4N1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf96410e36b5b9fb506fd25dd1e7fc4eed6d8307855d329ec41c09e581f08ad. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:56:26Z), 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/BXO4N1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46373069a6b7e93fa6f5c65b95df63efee52e8a333d2e399e7b467e003f02b92. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BXO4N1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf94c2461aba6769e219d45499f93ec9196e1a26ff4661e8d2de009bc766c84d. 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/BXO4N1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327c6738febd03bbbab9e0afe807e443bacf9dc65826b8772f13970d6ac9831d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:16Z), 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/BXO4N1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5246eb77f594370734a04dd47bace1065ec0e0a3eac76220889ac5472bcdca3. 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/BXO4N1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce009a4d4f755425dcd78d5fd8cdde0732150efcfb2b4169d4068a67bd92c8d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BXO4N2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcb6f84815ef9f1f7c4ab902c00887eddf050844277de3c05b06b1b08fdc1fc. 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/BXO4N2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f91d64235ba7e32da2cd49ca75a3b4eef75f42a1d3055a371d25e30052234. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BXO4N2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf311e46961d8c908c11a70fd12fd1407f7d5027676f8cf3991dea16b22230cf. 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/BX04N2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5801885894d2af81162b483a9c274e9a15853247a599e7dc267e2e97d055d796. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:42:22Z), 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/BXO4N2200003.