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 0x99ded4299864ea504747f441f32778071985aa6ac2e13b00fdf4c7c01808e5fb. 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/5e513782-9c20-4c51-93cc-c66ad7a1c611.json and https://artists.proofprofile.net/proofs/artist/5e513782-9c20-4c51-93cc-c66ad7a1c611.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 0x05bbd6f6a9bcf440ae3339023784f81af0fc569a944f07481aa15d116c6d121d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:04Z), 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/TR0530802005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb627b73f0b0683d77da3908ed858aab974736720cecb0e5ea772f4807d1f4a4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TR0530802009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aca1c76b8fe7879e3793c7b5f5baaa3b22285423f107df1c40627b54edbc1d4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:58Z), 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/TR0530802013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f1321c251afde25fffab510acbb6a6fac7320a8e7560d61ad9a4734c8e4f79. 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/TR0530802015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b16599a341e08aa0428b9677026d84b4d1506e9957e833cc313013c4a37182. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:14Z), 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/TR0530902222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceddeafe1a6bdabc5f1e6ba6cadb45f94531e8210c4100790e878365b5b2ca28. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:59Z), 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/TR0391300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a4eb5f679c6db458444b71ba5d02179d816c1e2d4b70b24820cdc00db30dbe. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TR0391400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c19ce0a44eda559ff0e0f6f7b4349aeb1e4c5048dd86d0aea651bb72e2863f8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:46Z), 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/TR0391600127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a4eb5f679c6db458444b71ba5d02179d816c1e2d4b70b24820cdc00db30dbe. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TR0391400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d3646349546b475af32c4a8acecccc7a4c31d7177ebaf99bd24f28c7de1db7. 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/TR0392000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d3646349546b475af32c4a8acecccc7a4c31d7177ebaf99bd24f28c7de1db7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TR0392000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9900a9966e4fc5f1832ad85790e9d07d95630450452eafa4d6646fd9a82dc9. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:52:50Z), 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/FRX282183774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe34c0c7ac2ce223289ca44310a49b8f9eab4027082ca11ae5ec2fcc6fcbf432. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FRX452169556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e70a8c73c80748ecafc751ed75577321dde7f9fc9f9d6b0d1d021332b9aa46. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:26:17Z), 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/FR10S2260824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48999103e6c53622fef4624e08c66e6b115464e9d200d41db8b8d874a5df14e1. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FRX762401811.