1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfce6796ffc8aee38b993a27f9d587fea2780a32f9b8795d00b9ae5ea200ecde3. 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/ce59adfb-318c-4bf8-9015-55a15703077c.json and https://artists.proofprofile.net/proofs/artist/ce59adfb-318c-4bf8-9015-55a15703077c.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 → block OTSBitcoinBlock must exist at that height 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 0x8da5cfa0a4c6825ba4805ed3bf390475a78d708d3ac6e13739b14e49bee811dd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FIKFK0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac061788f21ccc47c550c501efac948ebd17f473d3ece47ee59248c71e9e16e5. 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/FIKFK0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae7ed78d0c7ee84f06967b4345b75c2f8edebe8ad5f2543b341b79ea00fe30e. 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/FIKFK0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3591f172cfffe5e1c5596953cba24484bf1c85fa7ff04ec335d227f71a6a821e. 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/FISCA0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fb87dbaf7350545b080434f8d40b7db9742e4fa8a587719725119ab10e8dc4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FISCA0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cfbb6430420e241e3094089a3afee5642a3372d2e5c2b5848b0a12ec769f47. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FISCA0900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e1cfebcbdb0de40e7c42dd7eef3c29ffe9268a36b5abb80f80c45f6918ae9. 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/FISCA0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7bc7171558e7d4cf1779b31144bfae7988f9fedaa6e36890518220ed19317d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:19Z), 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/FICR21500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb90a4cb2a3fd6c0e8d77cdd39add13a28539ebf10c4aa17d171f0455266a81. 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/FICR21500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d940c3c047aead6652fa8f70ef3cd716e0a4b231ef89a4da379992dfb59578. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:13Z), 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/FICR21500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe874e8bb9fd093f33d8ecf0ef425b5923a242f26723666bfad437220f836475b. 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/FICR22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16b6af073d10fa32e3e27250cfa26d8ce43404acaf5d038e95386a10e4ac23f. 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/FICR22000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4d5a6fd5f4292643f10c0990d4b141d092fea01e1d57a3d227d160f5e738d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FICR22200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f75550267ebbae972df87429c3b3738fba89a302db11587792bc726832e44c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FICR22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533e61725329053c8ae4c489c0861d91d05444ecfab06b6cd30ba8347d8bf65. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:06Z), 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/FICR22400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188157e78739291742ecc49dabdfe3ff104a2bbe08045c28a1e0bd9af61d1595. 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/FICR22400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a8d8edf2cbd456eaf611a4f5b59be11c6d1606e45a77478600716fc7a64b5b. 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/FICR22400007.