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 0xac8ef89fe9f0149ca3943d807e403211bc909f53b87bbbdaa578641100ad26f6. 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/d3f12f1f-6f7c-4b0d-9d76-df6898bbb9b6.json and https://artists.proofprofile.net/proofs/artist/d3f12f1f-6f7c-4b0d-9d76-df6898bbb9b6.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 0xd8544e2cd54ab1b25e1ac41717f31729bd965a3530a70fd8b34370278721446e. 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/JPB602074719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d75a921d4ef735cdd0fabc7db95bbc292e3a91bf25a85ed083e8120727752fc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPB602095083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8dde82a83637bd56b9995f07ffc17372ca7fafab8485834053c5c08f8e492. 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/JPB602200664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b97152c4cb74ec0c5d884b2f8705eccb4a34044fff1a4503109575c94db9071. 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/JPB602401777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ff34d6a16300c11ae3761c89527c8378701f6e92518ffa104ccc20795a1dd. 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/JPB602401776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6603a16cfa78146f071fdddf19ca9f8013028f891f5464f2b9c1ac671497ff34. 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/JPB602401778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7751f9437f9fbb2eb1d523ca516c880b2efd2336158c8d1baa76d89b9a66559. 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/JPB602203222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec63f3c93306c9a7e004cce7a684af4eb68f1bcd24f38ce24b77b6f110310148. 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/JPB602401779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f596272b1e72b9283f89daec5dcff8141f8b673dfadf107a973fe3c74058ad. 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/JPB602401386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f013f1da983909ece4f2d0976f34decb0776eaffb842cfdb64210f395340ceb. 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/JPB602401780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240e16267fd7d5bb2a981f66132b4be209fadd83af04497de1d2c44467c392be. 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/JPB602401781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d093ad448c146cafc8692b14147eb03b39ef9b6f4daccda813f5e05fdc1e19e. 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/JPB602401782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8d52d33652fa796c46a21442058eeb87e6691b25a3ffe38141a41368ba9ead. 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/JPB602302178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bde9ed951542313c114051c93e897d84a6de341e2a729c819977223026edd1. 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/JPB602300828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83375c4339c9795298309a97d73d49a8ba769898706ca4ff52ebec0fc7fb3d5d. 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/JPB602202961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb978092f7a3befb653efbc201b6ecba2d33a2fa6a57c0d2b4ba75c231d4d323b. 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/JPB602104577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195c7c19bc2a9133f320ce7324e87af9f80241d9f89bd2d06da1577846198c55. 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/JPB602303726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8588a1c4e56995014d8189753207f596a487fc7781119d421f6487feb43cb6. 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/JPB602401783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2be28d7f7a46f0dcb8e1bde61376cf9cb3e9493d6aa0f2f2d7afcda989b737. 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/JPB602401784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8d52d33652fa796c46a21442058eeb87e6691b25a3ffe38141a41368ba9ead. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB602302178.