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 0x3fdc5f88fe0691bb4dc16b90fb69403e6e51a1678e541ec48227dd5618692188. 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/325038de-c3b5-4a99-9713-a11f67c585df.json and https://artists.proofprofile.net/proofs/artist/325038de-c3b5-4a99-9713-a11f67c585df.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 0xa0a193232cb2ac60a59b5078c987dc6f7ff568a68aa1050a311d959c88b6a852. 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/TCABO1334045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e35b2771d6d808d16e8cddc85a11dd74484881cd206fafa66ef54a3a2b7859. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:15:48Z), 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/TCABO1334048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d10be4438e354e7a5a8eab5e5375155fb6db47183c818780feb99ac2da151b1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCABO1334485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5474a5546d9669a374a1d910fbdb0bbf363cac563cc8629bb0a8dd4b12cc6734. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:09Z), 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/TCABO1334487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecc03e45f24c7f96d2f85a83fb5f21d495fcf3aed980dbd278af4a1a5e6f763. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCABO1334490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc3ef4f5a7d186cdfc616fecbc43595f2027f4a19bceb0e3a256496c1141184. 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/TCABO1334492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45244de0365ecc816c6d0914a19cec90369532b6f08bc96ad89a78d445135cb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCABO1334493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443b6c8cd4c4b44dff8046893f40215e89d5709098ddfea37ca13f7cd75fd52a. 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/TCABO1334496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8cf39fa7e45c80942811b6c8b6986865317f8fe253d85853211974d54fcbef. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABO1334497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00c3729fb70975ed68be78cd1f12645308911fc59b1bac874f38db9e758d8e6. 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/TCABO1334501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bafbaa51fba2eb173ec774a48ba1d555b59bbb069cc211773685439844f7ed. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:00:01Z), 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/TCABO1334503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b24dce504d6042a799be1633b9817096ca38b1a0410dacc9b7c281406c4de75. 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/TCABO1334345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cc89e697cc16f942764c9ca429afe3414a21e002239533ea573bbc28378521. 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/TCABO1334346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec51f64fd5f55d5145750bc8a6ea099b00a1304a778f84304b9735dafa4b3f7c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCABO1334347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016d283c16040b21ec1b74aded762511082d3b6b064d8ac7082fa3798a5f6946. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:20Z), 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/TCABO1334351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955295f98e4a4c67e3b38760c45d887211ebac3b2d1ea79990cf772ed71fca8e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:51:44Z), 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/TCABS1365675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd552f82489e6ba2dcd81e803f5d6210c17d6729fe3350e6bf93eee701ac35874. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCABS1365676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00019fc3c5b1867f12987eeb3d60ff2b444d24d3dbb84c17cda3ce3494e470a. 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/TCABS1365677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ddb878d026bd709ae2422f2ae7fb894d4b7e5fdcc9f9d1c5ab59e03982d717. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCABS1365681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43ad1bd2c6aa03ab74f9899cd47ab5b4775f21f9f7ee9279b40dea1f8ce30e4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABS1365682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d3ccbb8c4d8b2fb4dd4706c92056deded9232ec41be4a7ca43492fc2051468. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCABS1365683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8416decebec48adf13b2ab68efc874454cf7048485edfc6072cae415de471b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCABS1365684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dd458374f4ce08b3ce0a70fb166305ee4f52c8d6f3746a6b722b65dfe40658. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:17:04Z), 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/TCABS1365686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63a95872ecd76c829f289ace19d62a937bb0b538a7697346537a3917be61618. 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/TCABS1365687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae0459efaafdbfe519cd414c2d3026f44ad99ccfa5a4692f5a03ee70599a703. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCACK1502732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d299631e909799dc2e71796573612e516706e0746b602e88fbeb16d57411f1d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCACK1502734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5041cf0a3f7c64a1fc6ffbd5a6355fd803d64a01102002a2d87341cb3c4b49. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACK1502736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d2c07d610c7e574d1a773da039eabe83c777b1f75d52f3f31a6fc905f69ce. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCACK1502738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067171d294d6aaf547345644c53ce75280d31988e4fb39c1aa9a749cb3c66169. 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/TCACK1502741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963a8e43739643ee78fa744aecc35141a9ffab8e2f6942c52af96751a1670c21. 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/TCACK1502747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd528797995431666458b12eb441e892222b645c18e801df50a5c8749d0e41. 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/TCADW1864791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437107aa2acfeb3a6370335fd7e78252effd477c1ca6d45262be2bca5ebd857a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFD2095058.
Reparto Demolizioni (Sunday Thriller Machine Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc5477a332dc00cc4922e0f80af7b5cb1963ab58adf7ae55d4ce5c326a26e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFD2095164.
Reparto Demolizioni (Ice One HHRM Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de1ca4f0b5087259853ff516051dc80d094372c62af4d894f24ef90e3b70a21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFD2095196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3569daa28531c6c3de657dfa4053464e184dc171c9e27cd084a6ea9119334f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITRSE1600694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c6cf23f78fd0b5be521c55a16d4c397ed776712b6e2c3504fad0cfaf3444f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ITIWE1900150.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Vicieuse Bande Son vol.1 & Vicieux Bonus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83aafe89d2a08534f4ef53773f939fe8389c31ab58aae181e15c71c824a07061. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCACK1502744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8e4acf49b8b0781df812a017c6888b5c9621a41d8be4490960c72bb8bd7302. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USCGJ1707947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce83fcdbea535b06fc57e5a2d357ea9aad8e2afde297d766d6aa117464068c7c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/IT0501600383.