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 0xbccb5bb9965ff82ba6903b7f952302d06527e3bf3d8b03515087b597a548a628. 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/f5372c8d-1464-4b5e-837f-af6f74316889.json and https://artists.proofprofile.net/proofs/artist/f5372c8d-1464-4b5e-837f-af6f74316889.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 0x552e1e1a995275caa9af38546a8e68700d5285c7c12c9a86d2c02a80eaa7923b. 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/GBSMU6922901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf093bc83035d4c3f09408018d74422666fe0d6ff92d8a67ddbfbd89238a8c629. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:06:54Z), 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/GBSMU6922919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f8010b33fdbb073b7cfa7fe3b56abf05b9cd8c3368dfb4907f008e4f03d766. 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/GBSMU6922928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37d45a7a9e1601a6d9a942589c2c6b1a612ee95e9f566695f676cd80e05de47. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:58:42Z), 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/GBSMU6922950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358c8246f64f9b1d5e1a22ba237f46ef1054c2980c0fc12de3397c694f4b3299. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:34Z), 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/GBSMU6922951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d67377471ed4b3b0949102ee394bb7a06d6fa421b8390e5a5025a01969d96b8. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:49:13Z), 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/GBSMU6922961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca8f42d6137526be4c205af99bca5bb661fab043c4a2a6f98031288967e4bf5. 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/GBSMU6922963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf165a3213fd0e4a4c175fd0b715dd5093c72b9d3a2b528a034aae58cf161ba. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GBSMU6922965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3698839be6f90044f657b66d244b1a32ab2f085aa3db2fb5a74b915178fe2e3. 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/GBSMU6922967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a12771b4e66d86825e07d76f3b94e517396dfe03a960636d071014d5e746100. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBSMU6923011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2968f3416ddbe13402cfbfe4e4e7d2af7109835ad8212eb8f2fb7cbdf09bfb. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBSMU6923012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15271931be9da055754bf0f8b01e4a883dfce4c606a4d0bfa7103257da578f5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:00Z), 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/GBSMU6923013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047c4027cc3751c8ce59fe900cf4f3230cb8c3f6f7c3765bc709f5cc16e51f0e. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBSMU6923014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211f0462989c8bbbe9ac01fe68f08fe27c74dfba83ce0da9b020ddb00caa61e8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:23:12Z), 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/GBSMU6923015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7836a6bb1a9a1eb853f18262a8bc24a71a50d7940aac4e2cf706c93a15069db3. 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/GBSMU6923016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a005c985d76b8e5eda9fd6e3a87e225ba6c50acaf2bcd96296bbf042256706. 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/GBSMU6923019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105eb98e888081f50b9b9000db0da402d15ab4f1361ba27f96cacbfc16b21d36. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBSMU6923020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8219ff09b8f1b291ad86fe90b23974b8c51ac07131c37e180ed317e26bc4c8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBSMU6923022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6483dba6e5c0ab61e3f38470a6052832bc76981ceda31ee77ce46967b082c55. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GBSMU6923023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d749a8fb133efa1cf97e9a919db8c5a735804d78f8b47cbe64d134cf2b00cd. 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/GBSMU6923063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c94a4f8c828a44aad679baa865ed62503f17b4877e7f11babcd5687b9b0c50. 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/GBSMU6923069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844a61df8e890e7d707508f4b523d4cbe3136f2de12f55908caea5a9f1bfb188. 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/GBSMU6923195.