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 0x4d0255357c8496eab6d3eb0a75b4f65448d192e09838a14fb5975631b2da99ee. 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/24dd3837-d6b8-41d9-98a9-a79b1264941e.json and https://artists.proofprofile.net/proofs/artist/24dd3837-d6b8-41d9-98a9-a79b1264941e.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 0x5ae350774ce048db0c8f1af5b88497929cbe71c68f6f5ac46046814b161ba75b. 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/USFV71201898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e2ce311648c9f8d1d2b847000c5864ab476c9dd0d2d3fb089cfe23a8ed4a16. 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/USFV71201899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69981708f00d2dc9bb044cd8247e0eb98f2f30ce7adb9fc3d91eb6c891dd7ed5. 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/USFV71201900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f5d2cf26d1eb53557a372a213e32ccf6824e6aa6033463c0090dfebb5a6239. 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/USFV71201901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1c630e598460645871e121d974e8c0b8ba9f6672779078e423d36707a6c0f5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USFV71201902.
It's Raining, It's Pouring (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1185398900e2e1554d4fda22824ea29b6f24bf5f819267abd0e985324a5b401. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USFV71201903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641b1b77fa8e87d7cbe0074c271f7cc004f136b7096688fd4ae74d5e4ef7ddeb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:45Z), 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/USFV71201904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f4288dd40dd3b29a9fa39190236532ba1a6b5eb6beb57b0a0610085a33b552. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USFV71201905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b925b92989b88674d4768ddb57d7fd8bf00c249c8bf863ec48d4a503cadec4f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USFV71201906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899cf715f3741e14693edb63db0727f7a2f604d99aad737d0a511b7061b8289f. 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/USFV71201907.
This Little Light of Mine (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8c001a0c0fcf450fc128c0a882974dd259e17c9b9ebcab800f7079c321ddf8. 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/USFV71201908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bce2447c38d50dd2ed8bc2acc6c5219466a4b42b56ad09029b445a56d2b3fc. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:07Z), 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/USFV71201909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4b18029e06b4f13b70b00276a5a901874a09b1a961c9f8fb3cbc92a7760e31. 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/USFV71201910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ebdd632ca9606a4dd35ac449bf59a76b6ff3f8ea2a416efbe9fa14631f200. 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/USFV71201913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406f9a40cfb29fd837590d919119fef046ffbf69427357ed9a908d658ec6cce8. 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/USFV71201914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe52a3a55b33aa254c7d36c18379c2a3b457b2155b74a321b5f34ca25ab58b43. 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/USFV71201916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f83e1fcc735e1192d018473bf943506f9e93c1a971228fb91b7a9a0ff110bd. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:13Z), 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/USFV71201917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6622489502027ddc915cceaf19cbb818f4bb057cf1d2f6e7958c331756fc750c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USFV71201918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e72eb04aae38071ccc91f2517c7aaa7d11c8cfd34d952cf435892f3d46e775c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USFV71201919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222c8fb6757a878b910a5726980d800177180b499cfe182ff0eb6496624a7c66. 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/USFV71201920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993292dcd07bc602dfed72222fead5a37e32e4ce524e99030806e17a98b2a698. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:07Z), 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/USFV71201921.
Twinkle Twinkle Little Star (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a52cd0fb9dedddf5983ce6d82e1ea1a38dd3a3bf95c28a5fd80b956c417f666. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USFV71201922.