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 0xc711c490d816f3124fb26b7ffeb6c0b0963d29d530556ea9f6d092100391c824. 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/820029f1-0555-48fa-aa50-03d18a9230da.json and https://artists.proofprofile.net/proofs/artist/820029f1-0555-48fa-aa50-03d18a9230da.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 0xad4ec6ac1cdc0c996ed42e358a6ed632f25b3feea7ca57004976fbd7159a2e63. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:26:12Z), 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/GBNRN0607410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd48b0ee97576f27c088396f5d1b3de75e579667b552c0a672309fc42ed5a9a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:37Z), 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/GBNRN0607401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4ec6ac1cdc0c996ed42e358a6ed632f25b3feea7ca57004976fbd7159a2e63. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:43Z), 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/GBNRN0607410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7bd6f5860387a8f603fae97ae96d5f7e2d2af18f25e5bc14238fae9a05f6b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBNRN0607402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dc3f20c2783fd26483f05061e6039ec8a30f547d20b76a0ac92105d80ea938. 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/GBNRN0607404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252b77a94494755dd9e3cae8ba6a42d5e5f94947698e33416004b73f99c4b728. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBNRN0607408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785cd558e190f7bad7c9cf700a60e8696ae8e9cf91025bb74b93aec21bee4919. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:42Z), 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/GBNRN0607409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4ec6ac1cdc0c996ed42e358a6ed632f25b3feea7ca57004976fbd7159a2e63. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBNRN0607410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa439fdb578de6c6b11abe9e5ee12f8d7f5a318175e115c79fad49f724185705c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:42Z), 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/GBNRN0607411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce17e54c065c92fe9f4be2973d854e4ee588d13969634190635dfe6975e7e645. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBNRN9707413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084dfa5420bb2c931b4619eff8928b5911925c5eccda308cda1e9bc35b2916ba. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GBNRN1790527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a549f614b45938dea13307f273eb21e81390f2f44f28b54ae10232db205fb7e. 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/GBNRN1790528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf4b74e68e8e0bdac7d189f5b312b686250c849882957940a23a17abe0ce745. 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/GBNRN1790531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f3e8ef7b06f58908d6dd764a8d26a211ac1d65635704fcac9abdf8db46e615. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:24:01Z), 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/GBNRN1790537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf708a4d7ed4453c49fae12bd9054b296a5c3fecce39f6bbeabc33b40c970869b. 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/GBNRN1790265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f51c837fe709130073fa7117dc51cb25d4b76bea8f52b57b264df8b95bb29. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:54Z), 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/GBNRN1790270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417218cb4b4937c8cf9ede0a02b2499e839b94816a5ad4496ab82139303b5809. 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/GBNRN1790949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cde2f59028d19d34645b2e02b32d2c6fe1b0e72fdf0f715f246a4b2eac1c6e. 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/GBNRN1790951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e4357b2c7aa98ddbb088e18aff36e553a2ad8a6d02de26cb23c9fa2ee5040c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:58:17Z), 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/GBNRN1790952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399af40812e06dd2db084b237d76272ba59c3dead427568ca1e106da2fa4f74a. 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/GBNRN1790956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedc6f829d2ba36dee305f9f425650b30300688db64cf311af55a5b4a7374809. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBNRN1791119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3bdecdd84d5a3c1b8f44fbf5d5afa32f80b66bb15bbf67b1e646b7ff04acd. 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/FR3GQ1124800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e1cfae8b2ba7cc8a441203bb8a831d78f5e3d8685cc3f45bc8fb11b93884e4. 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/GBNRN1211704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e13607741139fabe0732d373333d0cc6fb8b7d371d68cc89141c4f3b08061b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBNRN1211710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193c13eeb358404ac8b08f6521e44cee7c0e27174c5957a693729290bce932d9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBNRN1890017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e1cfae8b2ba7cc8a441203bb8a831d78f5e3d8685cc3f45bc8fb11b93884e4. 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/GBNRN1211704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e13607741139fabe0732d373333d0cc6fb8b7d371d68cc89141c4f3b08061b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBNRN1211710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1bcb7129daccac5808080c5631693c707abb50a0542a08367f27fa1c468b5d. 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/GBNRN1890018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68faa5b8dd1bd62ae0c91ce9d4cf4f34409500f945c49aa94aa44e06843bbf08. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:51Z), 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/GBNRN1890019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cfa7238b97f3a5eabd9c2bc63535ed6f8e4343f063a9e938741f4c05e10fa0. 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/GBNRN1890020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6788957976a7ffd82d248187067262422d902b79160689244a441c2cf35fbce1. 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/GBNRN1890022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f704354f21d2661a2e232f06444a34595bcd4f0d5368dd4ecb78b9a79acea9. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/TCAHW2477891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcda702344d2ec8a05ecdde0c948df733dd20f72cb6ddd9f86cc1a7cd8db28b3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:53Z), 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/TCAJC2408490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5da86919e392e682a798af7485f85a7f01e3cb4848d0927c5811a11e10b74f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:35:53Z), 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/CAW6I2500013.