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 0xf9293f8557d13197a9f3df57a5ef92fd067a8b07736c4d6b8a5462cb75eee98f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa66b97a-ba1b-464f-96e5-9ac8f83323e9.json and https://artists.proofprofile.net/proofs/artist/fa66b97a-ba1b-464f-96e5-9ac8f83323e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christmas with My Friends (Instrumental)
Christmas with My Friends (Saxophone Version)
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 0x52cc197c5dc53b12592b97b1023ccce38e54ea5769adc1a4dfc3ae5e90cda1b3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZVEM2556517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d50f41370ee5fdd6408ee0990e1338eff5ebab61af4bb70e685521dc294eb6. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:31:19Z), 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/US7VG2573016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb0dc3e695ce40c2b4ef485e330803262da8f84024216251c5d69d8ce6238c2. 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/QM4TX2285562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152bbda0200c28948daf0603f37cd98f3e3710d60dfd6e8a2f125f37d9c641ac. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:43Z), 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/TCAJE2406323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f25f59dac7c4bd668a3245d5c0ecbd2cc7d63542c37d68d3a337131f7aa450. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM4TX2285564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1e7162d1c458c2728950ebc3adc55fd8fc6d54e73d680b4bf84852551179d1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAJE2406331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bef109640ba18350d0d611ef2354ac4d0e7c13d5e63e646e5d5facb6590f30. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT4K32513938.