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 0xc63bc307e0d76888950c41bad6887f40d71d5c40c217fb6c348c309caa5ed2b5. 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/f8bf396e-9ce0-4c89-950b-8a6de07a5bdb.json and https://artists.proofprofile.net/proofs/artist/f8bf396e-9ce0-4c89-950b-8a6de07a5bdb.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 0x7aed122de967bfa10bf8845d8033efdafef67e095bc3f0bf601d66a1c78fbc3a. 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/BGA471801903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6055be24b34df337a5bbe8e46063b2209ca1bad81ffcdc5df74644c67a4e1a8d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BGA471801904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12904f2e3d92e5b4459d954c0efcfe9de0059506f5b5801a79a70726c1ffcf9. 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/BGA471801905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824b6b869b889a5343f22c542144ac8aed28e28ace089910932a440b4778e0aa. 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/BGA471801906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7056b65d0900f476e17a986260c7c4b0343ed5c52be173a8c6baaf52556a460a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BGA471802472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0d686cfdab19665ffa5d954ef27256d9d369b439ccec52779db01bd825ddfd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BGA471802476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa11b110488b7142da2933ded52d63cea470932aa118dab28b8f885ea36b9f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:39Z), 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/BGA471802480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213423cf0f5ed59fdbfc917e8edabfbaff5d0ec4d397410cad4223acce696fe4. 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/BGA471801938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6736ef9ae557fc6ab176e6b1c16fc1856410dc324362b0bff63a9cb66f08e4ec. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/BGA471801946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2e5835ddd78047216d14d4a967b1e919a05f087611684a23d791053c0f743f. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BGA471801949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0df58fa3fa8688ce1d57090523a7f9302371622950501b1822c4428f73ca818. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BGA471801921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc462e02f0e381f676c7e53c37dd29748410e8ca87dc3fd09407db459e76e4c58. 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/BGA471801923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fc1c0789c2b810ca1599a090aea5efcdbcfb358ff212712afa67df0cc3e138. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:06:54Z), 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/BGA471705645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f3027476444de9effed7eda72671096ecda0d3821629dd83e6c1b4d108008d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:07Z), 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/BGA471705643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02d5ad902139b5d41656334f73da16735cbda02f338bcf7d89cf33d7f315a5d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BGA471705650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408fbdd5872bb517662c78768673fcc1a13d5619541ec6eaf53d2610b528ea46. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BGA471705652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c6c972e14fdd6c73e12bce23a930e78a1515611e62fc73d3a851c9d9a69f8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BGA471705654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13001d853727f1592d6314a9733cae018fb2c38ee38c19deb6e1c70ba3c68924. 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/BGA471705602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c82cca2068a675b8a1857312c64e66625f22e2c2b76e062b7ba014a106cb587. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BGA471705603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126af6d5822fa38a340c6fb94bc6a26052cc0d5394db93bf316d6f3970ddebd2. 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/BGA471705611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909ab0575b17172b0547bd9e242b9665ffe89d8cf55f5e502c00f2f064909cc3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA472307946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70460002e66a77af60f18f8a32e0366ae1954492cde059c92138aca761c98e7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:53Z), 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/BGA472321185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072a4aafbb43c05c98d10153e9fd3d54da71637472e6eee5ca1a2969f351074. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA472403358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6738ee74ca6e50d8172bca838f602884914c19f0f4efea02ac9f651bae8d7b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/BGA472526505.