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 0x0b053eeb76d5b438bf3147f93f0429369ed33ee06f5b3f9e137e0eb424d3bfa8. 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/836deee3-b146-4bdb-8929-ab314ce279a2.json and https://artists.proofprofile.net/proofs/artist/836deee3-b146-4bdb-8929-ab314ce279a2.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 0x89c1ece30be8fe17b1b9a727f1d852a596d09b92672b6b769f063f74751fa288. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:27:53Z), 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/CH7812074548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd797083f282f0f2ad5a6dc16ed47180803766f56984f8d3f22f393052ad4eaf7. 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/GBMJG2326407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0811ab40b7042519dbd921299c49310c917aaf0605866d34431ca1c7f5bbfe83. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBMJG2328575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be509ea8081947e33b57d5db81f47d1c0b4dedee9ddfd12309f2e33b6300446. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:54Z), 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/GBMJG2507488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa157ad4c06ce9eaa4c2fd43214daf9d7c1272ee135602eaad2bc3fb22ee75354. 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/GBMJG2508836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6977696b5275226a6b4c321b99d747753c35d56715101d13f7f222d30705bec7. 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/GBMJG2511035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1e42d1103e75ac130b3a59bdfa26bcae8232eb5b7b5ffb0e73bdb08238bb80. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:32:15Z), 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/GBMJG2511036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa157ad4c06ce9eaa4c2fd43214daf9d7c1272ee135602eaad2bc3fb22ee75354. 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/GBMJG2508836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38148609a38b0c6799a380803a2462cce1a9eb318470c9ebdf2ffe597fd926a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:09:18Z), 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/GBMJG2511037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de9c6b115627523b226b7ce436c71291f2e9dbffca53e930e97910abbdec9ec. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:49Z), 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/GBMJG2511038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be509ea8081947e33b57d5db81f47d1c0b4dedee9ddfd12309f2e33b6300446. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBMJG2507488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a361f222343fa72a474c248417359e5b9f1083c27210349d16d8d9c3943d59. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/GBMJG2511039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f7457ebff54738ccc0f37d678daf47f827ddc33c1323276181158405e4b2f0. 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/GBMJG2511041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e73334eb6b960205cae987e72290a01cb8ff74fb58a78048acf4177b67d3c7. 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/GBMJG2511042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb017f731399e8cf6cbd05adfbc40d4f91b255e305e95da7ea009cb290b6aabb. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GBMJG2527786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb41c6f68eff60096e0253372eef236a138142832277b0239e61e9a73d97d2e1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:53Z), 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/GBMJG2527787.