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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777e6f5e9d5db64b5ea2688418786849b678320bbb48d9156e94c32ad4480437. 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/cc90974a-8151-43db-81db-cbfdf8141b28.json and https://artists.proofprofile.net/proofs/artist/cc90974a-8151-43db-81db-cbfdf8141b28.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaab5df1a8d64aa0c161ade9fce3b19b2cb79bb4322002a19fe1771f9624a382. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AUMEV2141946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493364193fd594f4afee0b0eb440f234d9203d533fc50878127defbdea841f5d. 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/AUMEV2253120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3f7efbb6aff6dedf9632e834b0ed1a5b6861dadfdf0b29be6bd46c14fa7f4d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/AUMEV2272053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9727c65f34535c7a1ffbe0d194aa7a8035bf4787d0d15123f7d68fba29d51734. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/AUMGB2300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf965a7f694a48206199f42d2047ef4ff37754a14d1606fe14b6c4ccfd0ff2c2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUVLV2200034.
We Don't Need Another Hero (Buzz William Remix)
We Don't Need Another Hero - Buzz William Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6ea877d62071b197dbb1661a6960e997b13b3079ae92e4a3d5478c1b287366. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/AUVLV2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa286f25e72f8bea0b2ec7abd0a392eefa9d777b93e9a4d7228ed889f9d064629. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/AUMGB2401056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9727c65f34535c7a1ffbe0d194aa7a8035bf4787d0d15123f7d68fba29d51734. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/AUMGB2300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed62afec665b116c16e2281814564fc574bc51f21fc433ca14f2fb0335bf0d4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AUMGB2301043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ab4536eef6b914fd387415e28805000941fd4d481e8718169824b0c1596f7e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN062400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0608c14bb748a824ebafa76a871eed4bfd14e414eb912277e3d06408fb7aa3e5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2406108.