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 0x38a13bf843bb36b110b6919db31ce084a49ca6a2ffd7a0008b1b93d9c6825183. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f56465a0-b017-4bda-95af-ac17e729405f.json and https://artists.proofprofile.net/proofs/artist/f56465a0-b017-4bda-95af-ac17e729405f.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 0xdf5522b44795928f89ef61f1f3e38214590f5da02517d186d8f27512db778bd2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:50:07Z), 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/GBMA22431114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72296956f3f21e819d102792218670fabcbf8fd32fad2255ab017232c629507d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBMA22431115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd298859b0fa0d518bb170cbf8c55b38774738adab535126b78c8c130fd6fd093. 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/GBMA22431116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4815b68b0d91e374e170be8343c354078a1687370f8cc262f08ec3905478fb79. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/GBMA22431117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e831f0770b301cc21a40debb233a00db76854b7fa1cd41dd6b44c29fdd39fe. 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/GBMA22431118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc43d59d75076b9ddef915da09174bbd4f87a597b2e12c25abed0af26d1ea66. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBMA22431119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1105fc678b0182a1e849e0e83b97d8e23c2700a8acf5fc0b032da440dbe3ddf3. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:21:24Z), 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/GBMA22431120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3941d53a352f3477105d89b9af970358142000f5d47eb754f039c124008d90. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:35:59Z), 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/GBMA22431121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b3a8b0dbf8e7fed8911e18a3967f71a9fa1563cccf9931cd16c3f2569c0e34. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBMA22431126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c6d3e157d98ade76d26a2b49f3f1764e2b4963c54d6b663608edb086f72bbd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBMA22431122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652c5f0e1614a805d93af47f224321d683260d077356262361cb60f244a962ca. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBMA22431127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a126a12fe9c6a4207b0390ee0e3e26a79ca299e492c115a226afff51875549. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:00:56Z), 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/GBMA22431123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9ab32d4bab7361a3491d1d483c70615f9d1447065198b2f704595c114d6358. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBMA22431128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5895135eb17b3f68639821136e977749c03af083bc1c6c4db2b1641e75248e. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:55:57Z), 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/GBMA22431124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cb677f10a9f98af156a675aa335b54252b52a0f58e5030c0437478107583ce. 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/GBMA22431129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd58c2994489755cc44be483adc3e7f647e359c207a2c30ef38e5e215d8177c. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:49:24Z), 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/GBMA22431125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d4a1e9f9ef2686d8fbb870181a938e67ee6c1cec374d36c402db4a1dcf3168. 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/GBMA22431130.