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 0xd3e0316cff8a04a53c9a5f2cd918b7aaf81928c213d88c008c606222c7ab689b. 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/b79c791b-f72a-4ed1-b4f5-5539742a99d8.json and https://artists.proofprofile.net/proofs/artist/b79c791b-f72a-4ed1-b4f5-5539742a99d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Change the World (Before It Changes You)
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 0x9d7b9e4b33fe9f307eeefce3426e801dee51c83a2a68d2518a423f094f7c8344. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:30:36Z), 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/QZHN62105150.
L'Enfant et la Lune (The Child and the Moon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd759205ad5ba8522bdc44111e333d0098b22df8a1835848485b71d69df3123c6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6J2133258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab6c2ba1d802b89c366b263953ea079da9ada73a8ca2c919d0f54978322dd0f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZES52269350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7266eee34bb3aa60fa4921cb848d62ba426fe2a7faac67b08011676ed84f125d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZES52269358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd173935120214136eb242851d8cbf5ee6a8b6bdea61d8796dc69b3754ad80. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES52269364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e784a3dc4610528202e38f140af203ae25650753aaf8a5381b5fc31f510b4a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:58:56Z), 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/QZES82240446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4f93bfa2d966af74468ec6f95f22195e9bf0e1123991697cd02059636dff2. 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/QZHN82288817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf61cb37c094c697e34f116d181a5df87a884ff8549ca810f42356759e94b0ac. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZHNC2257982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb36f003d61ef3cc8fb4790aefc8197be99200f83e728b5cc1ffd75d6f46f61b. 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/QZHNC2257999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc619eae4cf325393b04e32dc6e4414f2adb5cb8f261fe3cd1f50e80f0353478. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6L2207334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5468448f595d5f70a6b6e35ff3619939f5979062e3d957af5397e53531bf95. 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/QZK6L2207341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbdfbd264f4f71394e1cb97c8d0d9a29e63633db8f40408a9d1e935e2db4b0e. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:42Z), 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/QZNWW2279358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8c1ad2e35de2329329f09b7ebb8109b82de3249f5b14f2612f250c4431021. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZPLR2240649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daee7459ecabf09ab50387ec5521012b1ceb4d17d19693a09ddd7647086ce28. 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/QZHN72331837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fffae6e466b95ed69580835a2e7b207caa35167b2b18025ff849ed1e2da22aa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWR2381170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebe2fe888a7c36a11925da8126c59a996115bb40915a41ba5fc4abc9bf86d36. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTBE2344700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb996c381deeabb92a71761787af18d850ae1aeb3e026a0a3de794842c16278e2. 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/QZWFJ2338551.