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 0xe45c54603afe4eece8a1f8a88c145550fe373005272c41d562cf54142a2c8cc7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27c97893-081a-4937-9e3f-c69bc9e8cadc.json and https://artists.proofprofile.net/proofs/artist/27c97893-081a-4937-9e3f-c69bc9e8cadc.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 0xccc652c0a4a46db15dd46ac1380c9b0eb0b7638fc135b83164fdf73d923c740b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:49:51Z), 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/QZTBA2289759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733fd5ac6efa3233766db95f35893afcf37dcccd65db11c6c0c81209a5271a9c. 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/QZTBA2289760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93899cc8e4d60c274db90c1acb30a07a9b61cf525c992e9d80ea8ab18cbf0d8d. 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/QZTBA2292861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6188ac8b4519d32a2776b953d5d805b9f141e0aca557d5b7ba1f59f12eaad82. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTBA2292862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9a1c1e26ab6f044fce296d8cc860b2f9110f104ace5f2874498577553f4465. 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/QZTBA2292865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6f54a4926535e77f34da5cd8a2674efac026c69b7baf06929852861865da8d. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZTBA2292867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6b9d9d4dbf1e697ec2b3c344bbc2ac10cc0624f7a1ef967d52cb79393874bc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTBA2292868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9c5b5ccb63d350c10eacbfed02d0d3258d187be09d0e6639b11abeed725460. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTBA2292869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da8e30658c5a34fa03a25cc8ebb3004c51b3406ab9e826838e181d316349502. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/QZTBA2292871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a2a53c21e875dc9b1b1a9f70ff8707820c95b7dbcaa50c89175220b22c1dbd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTBA2292872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0813eda8297c832089427dd0f746ecc33773135ac9bfb8415a42f3ef976f0f. 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/QZTBA2292873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbc3b19bce3a02d3ba0d8498561b9e8e0a84b79352a548402c81d045d7fa86d. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZTBA2292874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a71526e937194130629f9633812e542efdb6e76349025f3aa8a9fb4022d10e9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:10Z), 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/QZTBA2229856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516850ffcb47829a6bd01ca926113beb72805dc158fb51db56a8e0cff6f8d534. 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/QZTBA2229858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069d6a9f41a06ca7638181b1e3cacb3e2658e1c25b430528c13cb5eeeccdff6f. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZTB92250015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74da2cc30c9fad06c84e964afeef721bc05207832892ba08e5c0a6f12819d282. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:17:22Z), 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/QZTBA2229857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f841bad21cc230fd78888c3bbbe87d72469c622a2c62a3db0be9a744bc1d4d7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:45Z), 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/QZTBA2229859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05db1f9b30c6944f72d23bfcf0b9b628994b5c70706c9fda0beb5eee0a04991a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZTBA2230390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7480804ed8914beb378da08da33b806d7278cd9c3abeb294055b61e4abe0fbdc. 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/QZTBA2230388.