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 0x5c4c8566b372decc01deaa00b24b05def5a18f35af28129043194139e68df524. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc847c48-e7fb-4b85-b71c-e78f411a052f.json and https://artists.proofprofile.net/proofs/artist/dc847c48-e7fb-4b85-b71c-e78f411a052f.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 0x47413361e1af0b4390fe90c5ca21cb610c858ea96430103c1f944091bf3a7576. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QM6DC1547433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af174e50ae010cc2816b44c212fa3f7a3376e25584a3f36f1bac0289f0e7cd5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6DC1547436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679523cd748de52b76eb9fb5d338c06df8096bb07c06db63586ffc97fa7b427d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM6DC1547439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa55be31da0c70c1492f35a9e205eb0158589022c1bf52f2fc31d66906a830bc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6DC1547440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af174e50ae010cc2816b44c212fa3f7a3376e25584a3f36f1bac0289f0e7cd5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:04Z), 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/QM6DC1547436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef16365e3d4065c9bb790475af5287d83a0c6d914d135c1c37862269d90256b. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QM6DC1547438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622a86f80f32d785a5bcd275f8c3f2c48161244b37fd048cfed8aeabdee0a406. 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/QM6DC1547443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1579311496c51849ff262f6f6148722dde9dbf243fbb64723305e3ccbefa13. 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/QM6DC1547444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4db34416d52bbbe8294ee627ea39502e84494dc2b0cfc4f19560612411dfa6. 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/QM6DC1515281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cfb4bd55471b47add20bf637bd44414f381b30fd9941091a8b0d0f4fc978b1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:18Z), 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/QM6DC1515396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4db34416d52bbbe8294ee627ea39502e84494dc2b0cfc4f19560612411dfa6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6DC1515281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f92f8d58ab828263c5626c02de74c5212a6d5c30e8d2abfb2c8a956452697e4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM6DC1515589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f729e5bd03185e5082d3fb112d60f36f96f3ec8fc84b088925c9f19dbcb04b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6DC1515460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cfb4bd55471b47add20bf637bd44414f381b30fd9941091a8b0d0f4fc978b1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM6DC1515396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f92f8d58ab828263c5626c02de74c5212a6d5c30e8d2abfb2c8a956452697e4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6DC1515589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50eb4826265a93ba9b91d8d9078ba8d47c7a91147389bda09ccc896789379aa. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QM6DC1528679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499737724f13d3dcbdb91e722bf48ede24e13cb13f1c895169ae693057bea37c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6DC1694151.