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 0xda2f55884670579e2c019cf9c8c19a34a4a126c92e1050802f78710b5155bfaf. 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/cd87a8a2-f9c8-4c9c-8354-dcd80413a119.json and https://artists.proofprofile.net/proofs/artist/cd87a8a2-f9c8-4c9c-8354-dcd80413a119.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 0x183f7f54a77eb2094858f363da06fd4ee836ae412ac414fca42a0e851acea297. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/CACWV1838270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a499a88ae9ce3b2a4fa0c988461f9cc39cad8fccfa72f492732c560cfaef8a. 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/CACWV1967304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48d94e4c8f89ba98ef71298f3988b21b423b446f7346129129dcb391157f0b9. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/CAENV1922291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613bf13f40e965ea1fb9b2c3b2cbd7be7693c027840124fe43914dfc7d3e0b4. 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/CACWV2067567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2453b53c2ba7b3a12daab1c2c55ebd511047a549fc5b94f5eebae4cf9801b50. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:25:23Z), 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/CAENV2069432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5f8aad3c7bd8b7cbdcd33ce58d5888d4d5170d05bb92c39360e65c1920e9de. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CAGOO2051857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cfd3e11ed9a5ca1cae93682cd3315c773540adcf8746ef248be1d1e448c344. 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/CAGOO2052405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6aa41fb1253287b043e150d94bed7b3174d0050d3cfb7f2885d9c8513c44e7. 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/CAHQJ2104898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce36fb3404ce2cb2b76b21c24ceceb4c02bfcd239019a7da2abcf65a53348d3. 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/CAHQJ2115266.
Why She Is Hiding in the Other Man's Eyes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e97f0098fdbf87f39de7caa583945edf5e1f0b85f81910469d83aeab853aa8. 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/CAHQJ2273559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a25633040157b07698ada7a936715e195684a8e3b3e1082e9059b9f18a18a6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAENV2219176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe197a00b7a1f82a75066d91a736219709fe3a3f0b221e74ddd552690aac8870f. 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/CAENV2219182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe145444a5dc4906360937d890ea2fecf0c39a47684cf01f2c501701f9e4d886. 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/USZXT2351310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a87813dc22a1acffde1d256ea4b2a0ab29fe0569a8dd76bf34947ec61718388. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAENV2313332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae07741ccf169b5314dd194c6305cbb3495228410ed89d034075149ffe1d84a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:21:00Z), 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/CAENV2369906.