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 0xfa99f6f4e845c71bb210c57a1a482b02ca493a00898c313e2a64531598a7a874. 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/1c3167c0-5c2b-4731-b1e1-41d47d892124.json and https://artists.proofprofile.net/proofs/artist/1c3167c0-5c2b-4731-b1e1-41d47d892124.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 0x4521e7e2b4fb57954aa412672f1d0967857caefc3611506a8eb4501c9676f91e. 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/IDA431808074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265aec28ff1b159a5ccf8c6624addc3f6be92d1a16288234d0c390ddc45bbd72. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IDA431808012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b403f4217bcfda35b0be395facbfb5e0466d31522f621b9fe9b13d7faff9726. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IDA431808116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cec2a5743142c3623c2b227e462bd85965e13cca03416d4107c31b31d107484. 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/IDA439400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcc96d58d3bf2e720263cdd54e7c2be17121738b8632c3e2a67722f82348a8c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:32:54Z), 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/FRX452167091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc4e2271022ecf5beda6f09d913b73157c5de254214d8b54d5d4cb753b2561. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:45:13Z), 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/FRX452167093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eee3f45f0d8d479207607caa28782f7bee2373a5c727caa93992d38aa1dcc4. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FRX452167096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c918c0ca30f1efa94bc8474842439486517708aaee7538ae5c31ee62c816e85. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:46Z), 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/FRX452167097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76927405f7c22a075fdb5760651f6ca2c466cb10c0b04203ee664493b67547d1. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/FRX762285270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3f8b55d5664557913c5eff030b12df729f43b5ea55f5d1dd052c0a47a6056c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX762285271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978fa442a51f3338824b97523ece3f1f6efd24b478b6aab06726a1caa45a3364. 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/FRX762285272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36766baa6b3997136976e0792b65a2a0d700ad92803d2506ef764b5899998831. 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/FRX762285276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a8be24c6e82a9f5c64b8917d8204e4c5e6520ffc485abe1e33053b7f3aa54c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:07Z), 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/FRX762285278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019917f7b5e9aa1f9ccff034ce9342879fe60641dbb6d733197d086561e4dfd9. 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/FRX762285282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad236bf54731b25372f256764c0d3b9b9fc1120ec324796504ea3a5d5162dcb. 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/FRX762285285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1aa238b1c754d741b1cd2ed6daf75b346014e9bb99cf1695ae3aa3ce83659. 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/FRX762285286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aac03909014992566de351322cf34d30f92a3a665f1aa222267eb2f9fc7395. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762285288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2462fc2f874325babf13c7e64f59bf9b37c6508692a4439127c3777a304d5817. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX762285290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f48929357f19305fbcbab125fbb05577e8aec11bfa9286ca27e7bba38b9dfa1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:42:19Z), 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/FRX762285292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb1a8cee651829bbbfe500b4085f1fd6b0bd6957dfd1f288175e1d66bd23050. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX762285295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94440f6a4058909860f1b18a48221a5db45b17fef788477da973848ae7b32239. 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/FRX762285299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc997f96e8e55531b9d9b401ac563e1e8cd2a28d0be7b9b56351eeb615da13e06. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:40:35Z), 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/FRX762285300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0434d1a4d3b59d8dcff41d342f3724d88b8051da55f53a1094906961f78ebc. 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/FRX762138063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa352103eea288997be40fb28a3cb4b5ef0c24aab15d7fab35cea24e8a5d7c146. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX872218154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be762d2022c0a81c4816ff1ea780a6a1b0f395f31769664fdeae5a1f0a0e595. 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/FRX872218159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a7070f56ba595eb569f639acdaafab6df73af09df4da17cf580051af734f78. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:30Z), 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/FRX872218173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65df51c12eb228b2f50f52a82ddf289cf08f76c3d56df3db605f817f1406275. 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/FRX452243385.