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 0x19d87c67de9b8c33cf7f489d589501ac8b06b8d24a2cdb0df0863e4a376f1781. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b84f881-f0a1-4a35-8b6a-7a86582786d0.json and https://artists.proofprofile.net/proofs/artist/4b84f881-f0a1-4a35-8b6a-7a86582786d0.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 0xea4787f521b364dca0bb6aca3cce1753afeff353a459ae80383cb6156799c56c. 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/GBMA22528604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c766bc9c6b2f15a04294a770a57341ca04a1fa59fc72f14fe7d9e88ac8398a. 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/GBMA22528608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb7a5aa3df848578dd973108d4d0ce506a5d8208c3232388c2f427c6c50947f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBMA22528609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21878a33c93a9dc2403f8865a270a0e2cd8ee189975ba748ad56f318fc2a4a5c. 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/GBMA22528610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d13ddb69e63023eb8df925c7611b6737f5b02e71261cb8435eee761324fa96a. 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/GBMA22528642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7401d3ca1804806f13945045451672addfb89d3a658999c37fcd664aff4e6ee3. 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/GBMA22528648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747c61682dd503b3340821550d3a5cdcd6719c88944e8b44bb2fa7980449ff0c. 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/GBMA22528650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8bc986d008ba976d2b308cf303f22e8c32cd5ba52efb1ecee34d71392e8c67. 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/GBMA22529050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef1bba5740f909c1f756fd5a9680d8190846bf9e00a6ce851886bd0bdf7dd2a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBMA22529057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c654752e93fb70c4757932ca8ebb16c1083eb54fc7f34a8a49cfad2e0f9762d. 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/GBMA22528623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0b102d95ff7774844d215ecc6010ccbea1181736cdabe5d0adfbec027b6112. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMA22528624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34df88b20b0b09d9475197d4637ae578db1fa9c1e9629d53980927e6e2ca116f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMA22528626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a37766e82fd201d25ad664b9ae55b691cadf5dcad6e9b1a9116f3c3f5490de1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMA22528631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cc0261a8522070bba0969e6ff85096bea207e611ca073dbb5ec4077df2a7f7. 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/GBMA22532824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfd55ac2516838de2ea36368cd7ed5cabf4ff066b3ccaad0223ecacb9720ab5. 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/GBMA22532827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6682b030e52b342c8bb1d8b956a4e82994083fc8f3d0c164df06b8d0e2affc9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMA22532816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b95c5c8797bae2f7c0c2182ff4a189cdd71e7223302415ad5610d913577f374. 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/GBMA22532819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351c35a2f451bf6bca1e763a5f5f6a32a6684f54cc8bf1f6664f22c537f53cb1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBMA22532821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d4ef3782cc1a12778f191982a93b49ef4432448a9037fde34953430f462c5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GXH2J2557142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ae3bd8502462a85b7ed171c06c88e41b61cd3daadcf0733f99747e9465bd83. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXH2J2556868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8e96b5dff180963030ff617dd59067ea716409d27c9318840c789e747c63e8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GXH2J2557084.