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 0x4d6889ffa158c21b00e640bc995a359553d628e821bbd51b643c8fc26c09016d. 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/03e0c02d-1a7a-4350-b5ba-460f91a8a415.json and https://artists.proofprofile.net/proofs/artist/03e0c02d-1a7a-4350-b5ba-460f91a8a415.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 0x7f15fbb62a5ed1abcad0d18a5ff2b2990219c7847668e2f3bd490b4a32d0d76e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ22151723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80538a3f08ef2cdaddc5d1c88c675229d189a464615c5ea0b2ce0b18359d5615. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:34:45Z), 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/GB8KE2210037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedddbead30462affef5051bceefa066f9dbe979f858f7c132ccc94d336050860. 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/GB8KE2310780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93426425dfbbc67db6c0d12d4050215a066a90362f5b951885940b2eea4072de. 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/GB8KE2310781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d3b9e425492142882405add45bc6c558283d1ed42730dd001ff2ecf84083c2. 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/GB8KE2326090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8a31aa16350fe74d2bb3c760730fd8162429c246677e6b6fa7dd36d80363ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GB8KE2401475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab67a1be14b4215f3b19b158a4ef1e3fbf48a1cbdfd0659283e2a23ec3ffae9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GB8KE2417675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6646a68e3b2b7d140270d2156a6f0233a0c361c19136ba170b346c66ab5591e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GB8KE2422298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f9e44f2a8e8a60450ec782e9d17e08241754738c9c1e6b5d5a6247eb37aec2. 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/GB8KE2422444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6646a68e3b2b7d140270d2156a6f0233a0c361c19136ba170b346c66ab5591e. 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/GB8KE2422298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e11bca6f1dc67197ea5dd3a129c825bc946bf88b2d2978d65f5aaf3c09e2be. 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/GB8KE2422436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ddca17d89d7cb98b802abc5f682f8e3aa30a9b3f4179064434f3083d83dd4f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB8KE2422437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f9ecf2d8e20fc148a27f04f9ede5dd953f3a50406dc252c5d658c1ad41e58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2422438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f7d842e8def211d66e81c5af5b29a71d7de037329d23a04ffaf2bcc2bee346. 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/GB8KE2422439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a88b40d47d0b54e044f56646de4fbfc2818a4691abe62251a0b80e3c7b22c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2422442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948a0f9eb64af7656e8d69694304d38d3553c543deeeffe96c8313b075626a5d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GB8KE2501150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70ca9fe1d8951be3cafb45f2b81e71cddb642e8a7355c184ec42bcf8cad03db. 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/GB8KE2502985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb226a331d306bd72bf95c7735977a27fbc5f3e0c33c31519911393e10fe2fec. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB8KE2511502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70ca9fe1d8951be3cafb45f2b81e71cddb642e8a7355c184ec42bcf8cad03db. 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/GB8KE2502985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc08d802d06d3120531f799adf9d35dd0ecd469175d1612e181683547b5eda5b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GB8KE2511506.