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 0xb045eecd97e78900967f050b68ec32665a4c55c400bed7f8c0113d458343f98f. 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/cd7fda08-f880-41bb-9a1d-4966f3d3cf2c.json and https://artists.proofprofile.net/proofs/artist/cd7fda08-f880-41bb-9a1d-4966f3d3cf2c.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 0x3b40999cd1477de46b9d383636dfa76e065d85aa6a2caa5baec55ca2aeecb977. 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/TCAFP2112953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97410c42cedf43215b61a4ebd97cc0d1e423c22bdf1efc9f3b4437ba8d5699c8. 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/TCAFR2115812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d08ea401676b5f72632b14938c4372d49f28f45bdc3e378dfe90e178513bce. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAFS2119301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fc73c10efd726f299a41ed231d45a33ad49615a8a898d1d0746f6110e3da86. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAFS2160557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ab7cae0baf12ab87bae35b0a2ad72f5b46c13aaa2e35a94dcd01e6606a21e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:28Z), 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/TCAFX2177973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511d373bb8490181b38dd5509f1a1f0518603b29f24b432af147f0c5a57cd45e. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/TCAGT2324282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f68f221b917bf3478566cb6b4da58d8281374f4ecdfae955d57a6db4c502294. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:44Z), 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/TCAGU2323185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ab7cae0baf12ab87bae35b0a2ad72f5b46c13aaa2e35a94dcd01e6606a21e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAFX2177973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d08ea401676b5f72632b14938c4372d49f28f45bdc3e378dfe90e178513bce. 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/TCAFS2119301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba19c216bb02bfd39ba7f598e05b33b99b6105103b1d6d1c85cd8f0b391b3a67. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:53:23Z), 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/TCAHD2308669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c6dfe83049f21e1dbde02545e33134ae797f7fc4ae37bb213c6c28e2ea2ee3. 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/TCAHD2308676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae574ae195d4659effc5299100249632ba614d213325a119eec325b661fcc5fc. 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/TCAHP2327272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056d81db60151dfe011e45e00b4b714c148053e9f761ae046e3e09f11be337de. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:28:05Z), 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/TCAIV2410189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc1962ed4401d90f6ac124f28d148511de2c23e082c8512e9f3bb5693273bcf. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCAJV2544511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2e5c6f9f80de43e538a619dbb72897f6f60904c8f4569a744cf81ceefd563f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QT65X2565110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffeea7ff4edd8336b8f985cd2b6ff498b4f07a06c2fe7a290e8961f3ac88f00. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USCGJ2371340.