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 0x0144d9d520bb587153baa9e995ad093dac8a05934f51d5bfbf381ee9cb34c383. 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/add77038-e256-40a5-a6ce-cca7f8bc5a95.json and https://artists.proofprofile.net/proofs/artist/add77038-e256-40a5-a6ce-cca7f8bc5a95.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 0x2337f99fae3430ace60fcd386792f0d808853f19f9e0c1ae4cca597f16fea72a. 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/QZS7J2584198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f7281cc67c1ef40e7aa6dc448ba0bb273d7f1684e5773d15bb0009198adbc. 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/QZQAY2532635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de76e3a527af27c98cdada90f787f0d7d5302f87a5da7dbcdd0151e0393d441. 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/QZQAY2591539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bc6f8cd02ff23f969e4c49768f1f8be50e06d8ccf459338da9ae74ce1ff2ae. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZTLA2571190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cb9d6ae33fce517f069190e2068e1d2b948821ae3f00332b9e3a693a17e54d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:17Z), 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/QZTLA2555055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e2cb9349c8c22e660d7adcec12cfb2939b9974694b890fc63b8a971fb8676. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:30:28Z), 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/QZQAY2594835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317358cb361fd3371733e61f499baeebc74c556aa633701349385d088bd07356. 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/QZTLA2528121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d084102e6fb295af61c864e8f078c864f3a0a273a212cd1501f69ca75738de. 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/QZQAY2533486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c233ae276382650f4442738d82f435961441a114794c61d758da54008f32924. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZQAY2505421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ee1282fae00c8d16c130b6b4794c0217813c381310bedceebf768d7e97e9a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:00Z), 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/QZTLA2550639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09beb33751fb88667e54ea45e1367bd4bd32e405fd138e65b728d8ae07ad9142. 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/QZQAY2582211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e791310eaf3bfe8a7af6c1b04a85873bfdb814fd10bf05628d610bf0def505b. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:37:10Z), 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/QZTL92527527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ec37bc5cc84c012723d3c09d4748f1280bd521e63417652bf1dff37233a418. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZS7J2596812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad88ba9d0102f88b50a2b9f57b7068b93a0fcd16043faf024313fbd2a3bd18. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:51:17Z), 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/QZSYP2570961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dc0a5adaa6ae501460595b092352304e7024c4320ab670ddc6d908fa450459. 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/QZS7J2573410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512f65a1d58aa37663264cd74235e86ef6a2e5db57d6891eff6564625b334ea2. 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/QZS7J2554435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d39d9caaa15b848a4b9ab29c6826961416142af8c6be4f5ab38ff4abdfff59. 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/QZS7J2518782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3897c3c8129351ec67802a2f2f4841ecb7ac0922ef355f6f709da72b64e8bc52. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZS7J2596005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e45dad32ad5654553217ba787b83a0bd6392549dd95967cea4f26d437e9a8e. 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/QZS7J2544780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5620797799a572014a4f5d051d21aafb77ca08fa09647488c05f2617473647d. 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/QZS7J2570779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf428cba525e3350594e6c12c30518c71a21592f89df16e1bf03ad60f0a1cdd2d. 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/QZSYP2517800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd617ea090dbee56648f75b6daa0c23c51dcc90216bfee2999f66582da2b27d00. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZS7J2519786.