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 0x078dd2760a0b77d868cf321614c4d452628a2df3f0dbc20c050f2a3f433a5733. 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/1b353783-5ec3-462d-8239-7b2f412544ab.json and https://artists.proofprofile.net/proofs/artist/1b353783-5ec3-462d-8239-7b2f412544ab.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 0x8f1a860d471d960958de4993b5f9527bd891f8f13a0b0be0f1bb956946565780. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCABE1201744.
Choke 'em up (Live at Douglass Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc088d8a833c0a43de8e4fc783c975203f1366c50c20a96e1c917db887944a64. 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/GBKPL1833002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c90cf3ef59fe052de721bc80ee6f3e02c1113aab7c3fcb52a51f5f5662f629. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBKPL1833271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c592d1987af90d0e56f886dae9b4766cb78f3802290413d7a648b616144db0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBKPL1833277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c69ee222f01a1c5ace28c331503ae046a46e1499bebbdd98c74541966c33f9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBKPL1833273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac23920c1250b045072ea8d2f435409d7c590f6716b22817b81b1b846501c713. 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/GBKPL2159106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa8f281592134f5895cecfe309011e744ea03dfbffdb60e7d324569d0eb8e30. 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/GBKPL2283492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e9a74c7564f6c5a7e106bc5c2a76caa8fb3afd8abd8b9b4134c0d81a809b18. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:10Z), 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/GBKPL2172633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0c99b8d5218672af11d7fff609bf64e3c5a93a60e7880db22b75a71ede3f41. 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/QZSYP2375360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd6d1834f77e6244c31f3b945b070aecb295a43b7c35a78fba74087dffb9cd7. 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/GBKPL2014085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d0c45a56478f03dd70af1887ec4ea2e1581efd84896f9a8308fd1a85f4271. 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/GBKPL2292505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72f3d1e557a419f602a4147aa15b1a172bd0d2dceff0874cc6e60336b2d00ee. 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/QZSYP2304822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9f2cd3d1b529731429c1971e4f3af04bf013d298ceed115ba2c1261b55f9b8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:21Z), 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/QZSYP2394819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d7b0bef04dd976d7da48dbd38ccae16e048d981adc4e400887f9c94af393cf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZQAY2409127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6962e187cca941565a1fcf80d750567ffe12611d882186ed0e07f356c09492. 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/QZS7J2368006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e4e94e7796fb36f77058472ae4a788bb09a70e330017fbf88a8d00b00e6376. 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/QZS7J2489891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20e9f1511f141606907eddb8da4493d13eb8e0aabffca199e341e63cf554b98. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZQAY2484913.
The Joy of Music, The Job of Real Estate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525e94e789abb2ea5fa34d6ac59322ea3652c7b0bd50b64f950829d8b522f884. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFD2095235.