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 0x3536550b2573541338da223fb9ec77e8186292f567a39e4384360cfa2af89123. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8809f852-a6f6-4d1d-9848-107e80b78935.json and https://artists.proofprofile.net/proofs/artist/8809f852-a6f6-4d1d-9848-107e80b78935.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 0x61fedd397f09c3636b17126a8b934d380e3df274775d6bfb0eff55fc25ac0f8a. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FRX762117503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c1f9392c0c1888192cf0e7fab5d6f37f3168aead699e2f7b2fa1a4a9313d22. 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/FRX762150262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a45b05efdbb3ccb65e6bd33a22f0ada78ebf0173f978377ee33b000e5d9b84b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR96X2235166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dfbabfa9336f0cd1764edea67c4592d703e429b9505355126e2d0de4a87a9. 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/FRX202239414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0868f6e745fd1c95d86ac89f888a44987705109f4ed85bd84693ad8acc4a6e. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:41:09Z), 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/FRX282279496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8579df4ea631c5062abc342b6b5261592ba52c674d9ca7bcee88068569bd7f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:50Z), 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/FRX452236713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c789a99f096d96c288c85f03ef3c68086ee2e7858a77cd1bc6fde6b8840ccf. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBLPF6736133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209f5c68dcb2866afbf89240645b5eb18acc60b7d1ad769e5be363ef1feda8f8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:16Z), 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/GBLPF6736155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db617a44135b8a30bdd8c3c58b38040bfe98a4088c432ed045faf50c7a636b3. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GBLPF6737758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca03fe8aa6e5a1565db79d7088b9a0910ac216abaa367fb520b8f722fc1542e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:42Z), 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/GBLPF6741316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfe727c169dec74f156f05e56b24fe5b588137e21ed1b8ac73498b86ca817a0. 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/GBLPF6755087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2249efe98f19f747a8e59ae158ce84f6c1145c9d503f352e2e3ea5272a76e5. 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/GBLPF6756849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f7d9a8e6e83e7ae54bdaf82c73207e1dc20716e10a09876e0959c479d7b311. 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/GBLPF6757427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459fe43979886d031a9cd59385d8e82a0a2b0c4e517135ed55e9a4e99579d3c8. 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/GBLPF6760089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933f3cbcb97fc66a67c7572ccb8b9f26932bce90ab8cb93b820aee8366e06353. 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/GBLPF6760444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f551593291f96fd607b78975b6e0084c8138733c6fade365bba402ff8c580c1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBLPF6760642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a79b3ea6abd481de718d3ba07bb519060c787ec7abcd2c324de10578310616. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBLPF6770103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c2ae73daf088b7b16720d055028163000a44977f913b91abd194f63583854. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLPF6772307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4a8b14171befb69e878de51f4efd18916959063bcc72b398ab0f94629e29aa. 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/GBLPF6778422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f18e6da3aa0e2e8a4383e776e21fed708b849d29907fc2428aec88726492c9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLPF6779417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14fe5f825f6392547c72061472c212590a10ee68f1c91cb731abefe56a03059. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBLPF6785761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2442fa99e640f8d73aeeddaedbb82f21e6cd3d98508d43e6ff429af20007e2d9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBLPF6785762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bc9d5e6619b55c412621a9a39dcd5ad7ea4ca9411f114358e008826e1da004. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLPF6785754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1162814ce7bfaf02e2aff9c81f4c4e8858294c79d301867425e113eeb186c154. 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/GBLPF6788101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076095abc5543da21f48d587821e4c819c46e6e18c46ecc8535fc803d1ef8050. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBLPF6793580.