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 0xbcc3302c93ed28da4b394592b2e2fedd2bf4559c12564fe72785c3bcea9c17db. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad0fb214-6892-466c-b21c-67ab8316339f.json and https://artists.proofprofile.net/proofs/artist/ad0fb214-6892-466c-b21c-67ab8316339f.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 0x1e3eb4ccec4da0fde9db4e2fe561d120116c2f0c9acc27d93349e068a1d7dd02. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR6V81752530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb8093daaf65e3ad4582db8702a9afdc90e3b8da3995f11004c3518fd920c61. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR6V81752535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b95cdd901609fbc20cc73b84d67ba6cc40c335fbd64fe179c463819573fe7c1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V81752536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21515458a9a67b95b271fd2cb785d4484c578ad4edc84c0e18a1343f1e3e4cef. 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/FR6V81752537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa70b94e3bd6d111f6afc29bbc0733ee21e9c004784f67c6fa776fe5b1d2044. 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/FR6V82582435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aee298a7940d8700045d0b7a11984c1010222ac81d24092fe0ec80406d7328. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:50:21Z), 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/DKBCA1401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa735efa26d39edb267af1b70efddff4bac508370ccc6c0e845338a985462679c. 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/DKBCA1803301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de34754c6c4e94d17bac96c0b4304ae16de3b797ff054eefb3c1e3eaaa3ae97. 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/DKBCA1803302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a454c1ed36269894b1971eac867b0cf52668fdd6e054c96d0c5510d17817e2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DKBCA2502501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f94f3949f14edd7bbc8806098fe1353c4bc67c251623951b7bf937746155ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72452407.