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 0x38640a66897070cfd34fabd355a5dc081506bb9973e0b5a7dc9ffddc6ecde532. 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/6b150348-ec7f-435c-a6f0-f91e354541a5.json and https://artists.proofprofile.net/proofs/artist/6b150348-ec7f-435c-a6f0-f91e354541a5.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 0x12fa2288962bbdde6b477c805f1cf8698397400134e0971251cb32b7f4457d66. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCJPW2324267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f462643b9a63ddf16464d875ce47ae23995ffd292983726ac4f56f4c33ee2ac. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCJPY2311813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad8a0a97bd4a5aa40845cc8666c315539e40ce8fde9e0e2b6a3274c82f5fa1. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCJPA2436917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a619cc74df7894cdccc64595f3d4844e205be1b856d6ba155003c3e790cd3c1. 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/TCJPA2436921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc64a42749b34d34dd31dcfe5cfacb79926f65c658c2765a4581f1711893e05. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCJPB2460470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fff32892171527fa2c620b41ade0a46a8c4127bba7cca87e9d70f194acebae7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCJPB2493916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5875d640306e52b5db18a3cca34ede9a65faf0632b8b796f4dd1628acd8d96c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCJPC2449604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb717991febbfb01a4ca180675ee884b7c3fd21f8ea5199ee2d496933af3b4. 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/TCJPC2449602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3005d7b97b8b5954df95e194ce827d2958b0bb83d6040a7868aa46bf2ee62a6. 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/TCJPC2449627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb216fb2e1f8b9e38db25a8ee3d7c612f99c996a59a9e7c8094f70ba9c012e360. 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/TCJPC2449625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89675d26a7cdb087f7b813e6fac24d081d985b72bed6c85b8224f8d552f6ce. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCJPC2449598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d71001dc2d147d80f75a40ec04eb8f7d75dd92f867711cf54e56e9e52dec8c. 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/TCJPD2432128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dba7daa6712d557118347bc2d06defcb54f941f352825bc19f56272872fecd0. 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/TCJPD2545483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533c383713d54b276c2603fc11f877d051961617de4791c7a9314876deb44ebb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPF2573881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eb59f14882fd8d7a39763cc0a08171002c9fd731cd07e673b483147ddcaa50. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:30Z), 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/TCJPG2577859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beaebd8a2305c7e61ed8b50f4b3c1c8af52c8f3ed8fb85becd167b73ccc0a45. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPG2577861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8158ca09272c6dd00a971fb9e80fd06be096a9d8d533cb04201195076070c7a6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPG2577866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b430aca3e4a5b1763030dc606171a41540d664a5d16274cb7e7074e719df273. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT66J2534560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0be18f5088cd31163b3c0d5694ee76a449e5fcfc17aca9755266bde838182d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT66J2534576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffebc56325450cecc8f7fddd1e0d5a5b95e0ccae0b24fe85dd724f623e979d1. 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/JPR502512950.