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 0xc54ff625fd424da65fd4b4f7a74e6cb17686b11044c80ffd7eaffbe5ed7b1475. 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/521c5418-7a5c-429b-ad33-90e4d8fc472f.json and https://artists.proofprofile.net/proofs/artist/521c5418-7a5c-429b-ad33-90e4d8fc472f.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 0x006ed07b84daa4d1c9eec01e4da1fe32bd258b54939b202c556d1922fcc58008. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:48:45Z), 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/TCJPZ2430909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8eddea44d3fe286ebfe20f32870bae4fe4cf86ab7180c2e7ededb8700459c5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPR502414469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1647d096c954ddb466bce7af20987f408eadab931e3b099353abc4e1e57c4c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:35:32Z), 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/JPR502414473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776ae7e7ebf400246354ec2c063fc50e90613884cfd1fc66a160a3faa6716460. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPR502414471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01324460fdbb7b9666b1cea6d9a0935fea6659a86256273f6c4ad4b75c19ac7a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPR502414479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88babf126d35590ea4f253c1294c02ae2ac5b7ecd9135d68e3769a23c67f184a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:00:08Z), 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/JPR502414485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c3c0ceaba589a665502a5df991a4042ed77fc53d2898053a8f801158e6effd. 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/JPR502414475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f03bd4be97b4a41efc75a405471d0a106a5a0525d5581b54b1b45f9783d2781. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/JPR502414483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3d1a148ab16b8e9c0a38bb6da803c37dca970890c3b9326a5a7e051bcbfeb5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPR502414477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9b3bab899798259744538b6bf56f6b7ff76c3534820cff254cdf765e512815. 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/JPR502414488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ff0a59a2475c44e48973e8f86d4de973f7f7f4b6c913bcf660bdc628e9c896. 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/JPR502414484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfe9f0b5092f78e4bbc6cd188ab7255520c27b03cc1ce197acb0691676176a0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPR502414487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a64811739826a0ba501b5f415247c8dbbc4dff612e14eab1fd35be80dbaef7. 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/JPR502414490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd941ef2c86a4c8eb02365bc4aeab9ee7f44b74876dd29f3100a9499dce5845. 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/JPR502414478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff05b6c2a16c5de1a1e2789f5edeb175f543be0075f66ae377e17c51e47214e. 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/JPR502414491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89da265d50073f81a86bbf205f2d1ac97279c466edaa55746489444e0296bc2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:45:09Z), 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/JPR502414492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f239ed9ee58331a2c2267917e34a053d99320440012cb5bf1e48d74122e36e6. 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/JPR502416016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc766dca0e8f0ccd1309a48c411024c70a83123161e7dd46c725a6fd16d1be100. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPR502416017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4159bc5801651384f463ccfa102d0df7bb83bfe03c031aed06b3da276b5d758c. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/JPR502501028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b6c3efd0b9de5a7116b36422db81e21335392063e4a4f554b044c2ad175052. 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/JPR502504090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718398780a9c9a7537c84deabe351e7ea65fdf3363fd7e507f6282e2b1a5c35d. 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/JPR502507633.