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 0xfe349cc5ff917f81318e70554f636f1f7b00b06cac645343bac170ce1c672eda. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce315fe7-e775-4dcd-96b6-d5cb9eba32ed.json and https://artists.proofprofile.net/proofs/artist/ce315fe7-e775-4dcd-96b6-d5cb9eba32ed.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 0x3a7e10014525e90989d179a1b931cb769f77a4630c5c4f2b28fd5dd24693ae5d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:19Z), 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/QZTB72269345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7e10014525e90989d179a1b931cb769f77a4630c5c4f2b28fd5dd24693ae5d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB72269345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3bac33fa5aa5b73eba9b6ed71fe908fe4fa974347729b8b7f0277eb4987121. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFG2478200.
good luck, goodbye (over nostalgic edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fd21370a81ac74872847f0e5683603ff564ea0b4d28d96240386a6160fa95f. 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/QZMEQ2484378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9ce1d1f58219ccc38ea63598676d00ca4486f9c15f299e310e0b4f08bdb8f9. 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/QZMEQ2484380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3894d9a75c3c01429a0fff9eecdf7c763c7f774c3ad7db04ec6c751a41029b02. 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/QZMEQ2484381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13110792b607187538ad5920fc7d3de01f6b66e36da22841b942224bf95c36. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEQ2484377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5cf66fb039d5e7dca6299d34f6ee73b6015f9927586dde0dcfecae8e601736. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CA5KR2533385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83f6175b6d43d40f174716665af41b38ebd367ffc612ad8cc4d4c1bc9ae7642. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:31Z), 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/CA5KR2518002.