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 0xd80e8ffd435c03272fcbb1de503cbafcbca4561b45fe03d316d1ec46d88485e6. 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/6b60b4ad-4104-4018-835c-ee7ffce63ef8.json and https://artists.proofprofile.net/proofs/artist/6b60b4ad-4104-4018-835c-ee7ffce63ef8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Know What Jesus Did for Me (The Greatest of All Miracles)
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 0x54b4bccc2e1029f41aadd8b3d0e7bd7812d9f792d360b68a233ee0f79e16fe9d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USX9P2333173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe366d13a2c66df0743893bec04c6b4962b2e8f702205bdc22e6328778ee8aada. 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/USX9P2333182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890ed0f2967dcc8dce0959751ab7f658a9bfbeec5e785dfc6d864dd0134d1359. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USCGJ2453633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1178b923f8723030b44708a0ad7ad2ef062f71803e20eaa498f703f8600a7d37. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USCGJ2453638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1213c9a19acfcb2c6cbcd46fe02be711f543b0af7774fbc3ed817789fd1c9c7d. 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/TCAEC1911215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633371080c5f8dc63ded88804d7c8d506825bc0b8cda8358dae32cff7378396b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAHG2373825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3735faf6732615b8cbb344e35865254de28af4b7c8b2478f19767f01bf0386f5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCAHG2373840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fc6d4f02e9338c3b4d2de35cb4a653b91dad74f28810e522d5869a2addf3e7. 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/TCAHG2373851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa11df2e77d3db621501fb12c8f8db466bf8d65653f9d1c5b6df543e6fa5c77. 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/TCAHG2373869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f055b50fd0f6795db6b0c3a7565f3a8b55dbd8c83b77a5ac1cf12b15b6e989e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHG2373888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc6692712820b0b2e92fc14cdb6aa192ce2adc1ecefe667e7510422546e3327. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCAHG2373904.