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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6401dff2150f3e59a813bef283f16f0335949c0c36eeebb102ec06c80cf74a. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3432df32-9872-4ccd-a615-3c76a21e29bf.json and https://artists.proofprofile.net/proofs/artist/3432df32-9872-4ccd-a615-3c76a21e29bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zen Shakuhachi 1 - Japanese Traditional Flute For Meditation
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7143c52503120b624631b6d7012025d04af8a4439921ab591a453bb1f49fb5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USA560720459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c929f47ba287d70414a1dd347dacc89e47cfb4b947663255422b223e6654ac. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USA560720460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137e9134fdf9ad0924907c9db38ca4342ece849b49d2a0342b2fed96950f3bf. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USA560720461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674be029f12461925653a2b7caa38e16870360d1e0f1ebc344c28e26360a3d0d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USA560720462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caa2c82d17aae53c73aa9ac0e6c97c0693a12103e345ee9dd057411154b91e8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USA560720463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31152ea85cf802ca3bc8d23ef88316fba45d8665c7eb8e037801e192a4a6bba. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USA560720464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5340cc3707e0488fe192350b00ecf7d0b4c3b91e03491e9f32dff8da7a937241. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USA560720465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38d79813e5b9e8c8bc1ea246036e1be3110ea87663be524162662322bf57e2c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USA560720466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8171a4317c64529850b088ad018a83ca429fdc61945a6ac007a0ac8a4e313105. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USA560720467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8aeda4dffa434dc69e41fa389a36cc68a0c94d19a5f8256101ad1e56ed0893. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USA560720468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf498261e345dd0840a5333b381f977f3ddf12c2b1f048b848c6f0f0eef784a19. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USA560720469.
Neri Saji (Shining Mercy Of The Bodhisattva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa792f7729dfe788f2a3a16ba4ef964a73984df790623e08bd200b78b1f96af41. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USA560720470.
Japanese Traditional Flute for Meditation: Zen Shakuhachi Vol 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427e80d7f68945b6d2739cba67532c7c57f1e4a81324a5d5f6d600f9fbdbec81. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CAO280400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c9be4ba8d7bf16265e98c25cd0d8bd0e616c8fdac998d5716bdfe70d1ff299. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CAO280400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fece0d0b076099eae420dbf5961dee63a72c9948bbb0dd2bfcdcfaf7a155c1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAO280400196.