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 0xc30525cb90f73a376f5fc3e41680d336c3530fe2e730bfc80cdfe2deab0c2d41. 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/f4290aed-6d69-4a2d-8a30-5375f9790672.json and https://artists.proofprofile.net/proofs/artist/f4290aed-6d69-4a2d-8a30-5375f9790672.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 0x724241deb72f99261e040345ddf3fc1f11a1866d1328233ad605adbc8700e6f3. 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/USZZR1206673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a1a524896d576a6b228c57320169cf8ac34a2c30039ade97f558ca8443e095. 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/USZZR1206674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932cd6e622dd90cf8b8b04e524a5458989bd391703de9e848247d68bb058aa8e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USZZR1206675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf5cc730a6bafb9f1d642b84f17ea9d2a8ace6cffacdd9d7da273d9ba5b9e2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USZZR1206676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984e0641b139a7a2c4c38c7bf81041ebb4d7d940a4d2b5396f00c0cc4ee56ae5. 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/USZZR1206677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ca02e3b6a5c63b65fc69d63bff04f9173ff76a4ca0ede37dc23fd6d032bf1. 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/USZZR1206678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c79ff9d11ced982d9732a66b28e2de804528fdd8d5ec8e937e6ae4d864ff2c. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USZZR1206679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bbd1dae83ed213cd2435e18c6ad8829c288addce956652ca846f52edd28af6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USZZR1206680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c42c59be68c07894129d084437a5b703aa2dd5622d51850ab20f6fedc26089. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:16Z), 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/USZZR1206681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746d9a151e2220f98f2bb7c8afb865cda7ceef6f41fbbc7de9cc7015d7da2ae3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USZZR1206682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2669780471ab0ea56cfd0cea4cec9a57a22e83598b34768eb1d3f82063a085e. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:43:58Z), 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/USZZR1206683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19302b9f75317e503838f434195f3980b7c9ea608c54267ced205d3b2050a979. 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/USZZR1206684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd92d496315120b97286598074fef3798065b5f04146fd1f6302d1eabdec15b2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USZZR1206685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505442ae4af44610839461fa65feb952cf9acc57366d0e5a076b5a80de871e11. 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/USZZR1206686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e89991545a6f6d3581c2a66fb41e96e6b894296331816aa3ef61f4e98475a. 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/USZZR1208697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ad7ada43388e8e7de1d024a2e2a6789ef9d510ca68a9e2e9297cddecb9c6b7. 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/USZZR1208698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2240f67cce5ee6ec2f905b726416c82a2a3b1cabfb6236e41487652c9abb970. 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/USZZR1208699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333904cd712e89f93277b6004f5044d7ddb71020d9cc9e7f2b1c90f14a198eb8. 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/USZZR1208702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6e823a6c67ce43be9d18fa5919b22dca9ee55c2843977792051796c2408c9b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USZZR1208704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013eabc567887a7f9ef4fff6e90ee4e74840b4f0dcf2fea54e2c82365adaf957. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:01:12Z), 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/USZZR1208705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965e8d35e076be4a10dfa33c18dcad62fd668f358d57b1e74fafaea07c59564c. 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/TCAFB2087259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de54047036fe0f0c70847a37546854d52cee119a796f8675471b68246bbe807. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFB2087260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9368bde7f72ff5437851899c43f9f46324ccfee6bdac3d5e0d7ce209bb5dc311. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFB2087263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cce002145c6e831b7435f760747c64c2cb952a1a5e0030b55f8c8e906106a28. 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/TCAFB2087264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395036ffff4bdf031a832c094db1399356824755383a7272ae65b76ea4800e30. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFB2087266.