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 0x4a24d91880156f08fbf317495644347d1f0f3ced9b50f9d4488c541bd2c9d801. 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/d9ad6b65-8872-4c67-8303-81df8fbbb29b.json and https://artists.proofprofile.net/proofs/artist/d9ad6b65-8872-4c67-8303-81df8fbbb29b.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 0xde5dc9961e54c10e25c0e5faf98f42d511c191797c50b93d8b5024b217cbbe60. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:09:47Z), 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/QM24S1920381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b46d4d29f4b4f639416567971ed0797fb6a880a7e5422849e50f5d999f1f241. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN61900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec50d1a9ff873888e6c1a93a9fdddad9a3d32705039aaf2be70a13d5ab4a50e4. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZHN61900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a6ef307940a0645b6289335e69bac61a4015df72d02a78e1298888456d46a1. 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/QZNWT2126960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982047d418c0e31182b8a268f4a74379af7b127c0b5b1a90b4b745060471f86c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZPJ32138732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f792fe04506fab9eeb217b10281175fec64b654df58ca268ed2b1005ffe1191. 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/QZDA62293273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a51aba01ed6f7ec42ff2228b322de00442f115536e29b9ae5860b6dbc7dbfa4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA0M2392996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f86a4506b0fab22ad5d9dc8302eede099e242f4fdbc929e5de10430a237d06d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T17:27:02Z), 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/QZDA62304275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a0d25b1ea5360f172edd90d0dc66dd0d4dd5e516d70577d76730e64a0596c7. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DGA0M2392998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22490452c389dff873415614fd17eb61976173a80da1178b394a748cfaffc6db. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX452468316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983bfd31fc540a2f45821b2a4490765410d156b5ce5d5765423532a74399dc7d. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZTAY2274884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22490452c389dff873415614fd17eb61976173a80da1178b394a748cfaffc6db. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX452468316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6efaa83b88af4d1ab1c5bc6eb12bf4f13c5c3d69dd71adbfc22c30c1a117a26. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX452518962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaca89191b19e71a0f43bd312342e51150fa6de20e0d0d6be99362f72a0abfa. 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/FRX872549762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed9a7ea964ef3ff59cc2fe0825d188b4ab42a1860995df3f12365da8b0e572e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX762521534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6efaa83b88af4d1ab1c5bc6eb12bf4f13c5c3d69dd71adbfc22c30c1a117a26. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX452518962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409940eed0f7ab55e8ed2101d569ddd424ba0ea4dc92a4f3391b933e34579c75. 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/DGA052502052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaca89191b19e71a0f43bd312342e51150fa6de20e0d0d6be99362f72a0abfa. 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/FRX872549762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c88e96cbee5b69359a3dd07353d7da6457311e7aa48a7b48955bf4a420fc8f0. 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/DGA052502053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed9a7ea964ef3ff59cc2fe0825d188b4ab42a1860995df3f12365da8b0e572e. 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/FRX762521534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb013cd3d2b86882d3280bf5e80b96f9addf08d066b8ddf6a3d4ff5ff7a6e5e4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DGA052502054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6efaa83b88af4d1ab1c5bc6eb12bf4f13c5c3d69dd71adbfc22c30c1a117a26. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX452518962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140baaad0220f76e081df17a4630327549f90fbb2bfdcc88efb99c04ef58ee37. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA052502055.