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 0xbc55c7c87cfeee8854680412bea9c4a53d3767ad3abf6862b3f72b7d87c1dca9. 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/000b0c3c-8ebc-47b7-b3e1-985514196cba.json and https://artists.proofprofile.net/proofs/artist/000b0c3c-8ebc-47b7-b3e1-985514196cba.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 0xbf9dfb0484564ba428c1f5ef8daacc5933525ee4f2b6954f2a86b1cbc58855d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEXO62223708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4657d968cb9c4f3c0f8e6abf00b1251803030f1b12a6f423eee9ac41a2817bd9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022371362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f204e6ba5846c5d64e03bef8fdbd7e40efab8514b1852a5720cc5d98e6dc444. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022371363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abc124d3a7ff1c84b6c855071d900cca42dc558cf3ffdff4793d0bfd4a2baf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022390563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bf97f44d3a551770d15093ef812724c654352169ca54cdf4077cf01bb49dd9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ022371364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08839e5fd3bc5ab510e815149df79087826fd4aae0f39d845c63f082248600ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022371365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260403076a3b6695503d90120afbcd5c0e523bcf4151791bf526f769efa9ec77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022370558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc1c3eef5c09d22230e5788dfe989f6ad3bbdecb3a5e06a8fb5000887e0ced9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ022390441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedafa0adf46ce41b9b4b3917c0a03265d46baa5cf82d446f71fc976754fd1f14. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022371366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8663ed7601c5021dc2d3ab7b98e4132f58099d40107fccb2e824448bfab081. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022371367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c8df15195e62b072e0837cc4a8c03702697c9e6e07ef7c0bb9cbe090ecfed1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022391137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddcd2050533149de73e93b2c0c67ef491eb96e4f1e551f1660d4b1108cece75. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ022390777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3818455b5e2e3e2b29783d8a1628adf15cfaa5cc9741607335b649eb98a5d7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ022390056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5433640b7771855ce411078466eed27cee2191652443b4227292980e514d1a34. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022371368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58c81db402025b33e2581d6f4949b022547a09015c35977bb54de32002c04c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022275465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517cfd5c48969c501fedff5949dba7c904da537951a78b705d31bfe5c4688642. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ022371369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978750d59e5772a987d3d5c73c5ee982f0d6d170e73f2ecc1acbd5ee0ad75730. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ022371370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8517cf3a45aa77d576cc32eabed8ae00aa58de7dbf95e70887f37f88973f686e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022390956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe725f3ac3bee4fb3964f0a4a266170f5451fedb6a20c05a0f0215b8b450575. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEXO22205718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe688d1e5badd8e3797ddeea25f57b39101fcd1c2cdebabee6b978d9a5ac9fd01. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX452158828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219406cf5cac5ca1744c841fc22d00e569d38027ca282caaaf233c43050a79d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22200595.