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 0x24023a06feaaf66713c909ee3e19ea3d25d5bf3e6f4bb0e4fb7cb4bcb054c8b9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/472de5da-ab3d-45d4-ac43-0767f91defea.json and https://artists.proofprofile.net/proofs/artist/472de5da-ab3d-45d4-ac43-0767f91defea.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 0x9cf0a874a67ba9711052fdb93eb39f65830bb5ff91e10b1b0ce0635b94310ed6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DECY51901992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ee84288e2d27c680bb8a3b602de5f92275fc6a8500f830c528b4132431e66d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLCK41059087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87053440edce5d10ec966553d51c7b0e825bfcb21bc5d7c11ef3e3d851bb07e. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/NLCK41059088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9ab7df73fdc8dcc24538d40413b2b1547e0919a0ac6f46526b784b1d3d9569. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLV61807668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc6e9cdea0a768bc32574e58bed2324f2c134e70ded6e4d4f63939283d3530a. 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/QM4TW2081420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19adf3d4c8721c5ade5999ebe10a184c2bc107284bddf016e4bd7c329f5df5c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BET612000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe810586613f505c50dca6d0469b0bb75c61f7f84a9dea976a92b7e7a74e223f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BET612000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d39bff8a37ce6f3acdb94a7337ae23cdb5ad8e714790d5fe2b60124405a2621. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2041015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d3b54b68d0c866492b2cee3dafdff70b4891599b952260dee2ee7a08a3d047. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBKQU2041016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5e6303fc5494130c19b597ae89c5b225f2aaa4e4d1464224044b3b41ea05da. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:48:33Z), 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/BE4JP2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dfc722b7c8fb513fab3a0dab7d6d382206a2505ba63be206a87907a420cbba. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DECY52200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8a09e7d0de21674f06c617e48e2451e8417011076d7f0fdc65dee4ad8e9d44. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BE4JP2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b8734e15c71e9f6770373306914499cda8632d43e5be694be5516537f7f7ee. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BE4JP2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a413a3f96823fba285d8d738540d88978a5d25453839e8b642693f2feee231. 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/GBEXH1900605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f860741305e3d5aed6fca05a0801f6b4c9d465d542e70a89bbd5e493f8909c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEXH1900513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b9cbec6e09e0dab8b11f6f60baf12d84aea5486f2b366893df0fa8bf03620e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRPZ92114400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe502e34d2f18d7bf097665788366e847fdb76463eaa1732b4c13492a46e22b77. 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/NLCK42221361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1805be4bc681c6df69c579049e3c95dae21b0f16f41f94963f52d04abfbb302. 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/BEN582100764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe502e34d2f18d7bf097665788366e847fdb76463eaa1732b4c13492a46e22b77. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK42221361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a413a3f96823fba285d8d738540d88978a5d25453839e8b642693f2feee231. 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/GBEXH1900605.