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 0x38228f3b0aec545d19e7ff699b564d7a5d2ed6e741542116600e6793ebe9d6c8. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3753a8c2-d12c-4dfe-8cae-3f4d67b02c46.json and https://artists.proofprofile.net/proofs/artist/3753a8c2-d12c-4dfe-8cae-3f4d67b02c46.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 0x1accba36de57d28737393d24db46227491789e302cf1b2d9391a141ceb268d32. 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/QZ8251824421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18674f8968825a6c9874cce7a92df302f990ab518780040431244427071d1792. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADX1811569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc846e34bf1c5c029f83b424f58342fb67892f0a6ec4bbc4a48dd885dd4578ac1. 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/TCAES2014343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb56bb18c26f860b3a93b96bb51906dc30b68a40e71cf9305fd90acf63e9b06. 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/TCAFY2193636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8ffc388b72a87db246c2a36dc2b5a83c25292bec3bbe5bfd6d2063d85b9ed6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAGA2225800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fba8f2fe41420b7398f7625e48ab23d4d0914446b1c555cef53dff5a219e850. 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/TCAGS2229087.
Never Look Back (Together) [Demo Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0656fbd57e2fc39b43ec32273766d3d0ab58c96aaa6fbeff612a864356f9f687. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:07:45Z), 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/DGA0R2329792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4d28d8e1aa51119c28aad660b888654f02e00b1d1ad7b1e598103a0b49592. 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/FR2X42562952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f673fd83499838c610453af08b226b461b42a4b37ce4941826ba7f6894802e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R2593383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cb6a170e4bd2882610e72ee21af27294d89459adabd4165d1313c027be0488. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX202563220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495ea4573306fcdf08c6b20e833c28d3f61ca0cf8ee4c62039cb636caa922c74. 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/FRX282513948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee905d755e8a923ae8be77f391facd6ff1e6a373e3af030b2b9dfaee45d5a945. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX872584969.