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 0x189c7211be8ee294f326f6d902477cb55000622d68a3401a690b67ed7d457723. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a50f34ed-d99d-42db-9aac-f316e83bfe29.json and https://artists.proofprofile.net/proofs/artist/a50f34ed-d99d-42db-9aac-f316e83bfe29.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 0xc39e1fc15e788dcb52306abcebdf1250ac3a8a359caa9e0e7926919222a6fd0c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:36Z), 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/SE5752420706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f071f9e9131038e7caf9dd0641988f04969d81bcc816972f9f45c581fc828a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SE5752420712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7890f73e00d945478b67c2c52295d400ddd19e2b49098bdfb9b504b1b9c2bc. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:10:28Z), 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/SE5752420716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137915ce2cf859b43931ea7e06777a90ae0cfcc77c5487723aeaacfaca3d6ef. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEYX82197987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4163d64af7327137c3f6da18f6c34e1b0feea9149b2fdd7ae13db665db5c765a. 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/DEYX82197981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0ebde7552da5bed065908863eb7205c49bed23b129cca9f97687bedbe64d3d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:59Z), 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/DEYX82197984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49751d0693687f61ece3d4b6ed60cde73a6e128c4dd72786dbeafeaaf71ed97c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6SA2482431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d93a6e3a1ee0c47210bf11de6c4641e78e3745cf9de4041f128a30be4ee2d9. 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/SE6XW2431333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5c5768c78d75cc6ddd592a7362a794d29f523e330c3c8cbfb931912dd56c40. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:03Z), 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/SE6XW2431334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0162596a5a8d282b8af1ccbc1539af0266cf7730dbd2aeb1fdff213d28f8c34f. 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/SE6XW2431335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8930c8b8c20440a5be01c113bc41df98053caa6e2e28983356ff3a60aac6e9de. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:25Z), 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/SE6XW2431336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8c741ba6122adb237b732afd2ab19746856b5e631805a00c9367e5eb045bfa. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE6XW2431337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49190a58d96c18b7f66d4ce61a74ced88af57b19ae42337b9788065a7d70a31a. 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/SE6XW2431338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6000dd76124f974c7bf9b5f25656f80fc0274701391849bb1c2b0d18ff5e21c2. 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/SE6XW2431342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc366f257bc90b3d507788c3f492a30cbb93da257704893e9d1d751c68a413ad9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:21:58Z), 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/SE6XW2431343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80daa7286a04379b42616c0ca35bc28904e31db1de22ca230ccc084c33242ea9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/SE5BU2551793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d89739e3d27990a7b5c99ff5e12452bd50004b67ec80aefee5cb3ca67116b4f. 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/SE5BU2551795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5166f0e8471dcf874d0c088ec086569d2bc7a64db8e98089643500d4567d357. 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/SE5BU2551796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dd464618f58a774fb2380d07d0ac1ef5320d44b7614ca78b99b58cb3c6bf7e. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/SE5BU2551797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb28f36df99c0ed4ebda3c1154ac5233b8f0acd9265a5e795c406c8c175b63c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE5BU2551798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807ab6ee0e4d1b3a7cedfd23bd00d2ecc5cb17a2a1fe93900ea9c560d93d5fdd. 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/AT1962500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f748ce3b745d3d8aa5601ae734b8ed22d738713f669ebe70834c3e4c2c215e4. 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/AT1962500471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1123c8564d4c23221c41fd726723ca18fbcf418d0b31713276eb4845c1628e3f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:53Z), 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/AT1962500472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fead7baf067728f1ad45e203857edec63e244e4f6c0151a21e6b364d1eac256. 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/AT1962500473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88029ca80a841a9262118d8953032310956d50b31f7e25b4bc3b7797c95318a3. 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/AT1962500474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc31f7129ee542a99605b84ef363a1cf76765722e205fd8393f8eef9865f3d07. 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/AT1962500476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70688c6f434d0adbe3f0e99940f461054175a96e51b8f5711ebbe4c99e03d816. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/AT1962500477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9e521ed79d3baf65a8491366fcff623438b5f1aeefda7d49f890b7f9970c54. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AT1962500590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e6e78596f63612dfdc2a96a3dc2504bbf98db969ab8101e729761a4d8db3d8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AT1962500599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d40a85a12c14701ea9d3900cd954f2c3dd2a3d8fceb3f4fe265451834d88c1c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AT1962502220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f821b891b1fbf1f0b2b7c4d5a1f4ad3f08aff1eedb8185b9c861c73ad9f7cd1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AT1962502222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1a1a65b29c4262451126d9eb1b8429b6e92ab56d87debb160b0addca33df41. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:35Z), 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/AT1962502223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35108ecd12ef2f11fe05358f202bc64fffab139e2e9e251e318591413bbb49c8. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:34Z), 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/AT1962502225.