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 0xaadb51c5e3f0f33ef5e28fafd7313393b8fd75b9561694f775df62d20197988a. 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/1e46de75-c23c-42a3-acb9-03fecd23020e.json and https://artists.proofprofile.net/proofs/artist/1e46de75-c23c-42a3-acb9-03fecd23020e.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 0x3f107dc01ea271e6f165b5c19a0329e982636cc3627f990f549dbb3ef4c460bd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:38:13Z), 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/FR0U91700511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d15830a1c7e82fb387f77a3ea8771234a54be943eb8bc2d811169be8bc13ab8. 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/FR0U91700513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1b2f3fca524be3d66b6c75fb29eb9cda2020d719969c9e4159e0aa450a2034. 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/FR0U91700518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96fc16a95ee8d172f1d846b5a804684cdef8cb94af65166a1a711b8c6e58a86. 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/FR0U91700519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ea1beb9f91abb9ee7b5698c481b08f0c3f65f9272eef08dbf5aff3783fd1fc. 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/FR0U91700521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42d7210d87684983c247360854f9c33f2a354d115691abe0f62f85698aabffd. 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/FR0U91701361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3650383b631202338c50003a2f2a1c7d686585efa5c50faa82d602ec47e69b9. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FR0U91701383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f3d7439ddf9b804ce4ae1859670cbfe81517dfc0abd08d6212e7695dde83d7. 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/FR0U91701384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fac58f879ba2bc57186d9b22286e5c9b013fa17343d321df924a0f698772b7d. 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/FR0U91701386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbd1428c9c69f76d0c37c112896365f2b56e0fa7094be072e0c3cde98fb0d94. 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/FR0U91701387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab128582e1a5f6ba4b764a736e9d74a601ca9f28187bba29e3aa281620324b78. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/FR2X41981548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d429b95ff3a755ec33e2a96604fe07ae36ab6f85efe061a3cdac54b7444b2b6. 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/DGA052005148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c18de39ce072fa0c90c86a92329eb96e90b18c0740c451a4a322de51eb1514a. 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/DGA052005150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf025e66e20032c33a25afa22c9d712fe187d4992c3e1f66475cc467e6eb44ba4. 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/DGA052005153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ea77c79e794d45850c66f1bb5b5cd951a5b952db73dfcc93b1cd16b82fc9a6. 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/DGA052005156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa380a0c98aff9be28ca062adc092a53aefe9aec84e6bb7335565e3de9a2874be. 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/FR9W12207383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd1d5b8eb7695a93d8fdb9f3cae2c4a430f99c0589daaa746185cc9bb377a64. 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/FR9W12211427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea4bb084ed0f60c1236a598f256a05da2391252e12ba0a82b841d6c8f61a518. 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/FR9W12211435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b3cce982a85e7a9ab6bc2d5ec99d16d260b9135a765b365054874bfb6c6dc0. 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/FRX852204020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fa680a9e0e1001f9af75aac998a43f52cb888ced0316635c27de0a978eaafc. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR9W12311623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a0ee5895935d5fae4da024c0d3da8dbbaee35e470885fd5f324575af70c436. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR9W12311627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c792dbe5b46928c2c61db93d06381bc55bd839972f31cf24ab95b101b3d55b2. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:56:00Z), 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/FR9W12311625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf834ce392ae5790a37ff5f40f468d4d48b675f3f9052b3dc6891627361f6fae4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:06Z), 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/FR9W12311624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d3499a6946feeba54611d330f52e36175ec5916326b1f07722143333495168. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR9W12311626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d8ad701054e0ae8a890ea69435888fbe12ac3aa4b6753b558bc1193b11e4bb. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QM7282581899.
4x4 - Extrait de la compile Cercle Fermé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c46fa171b7a1fe816ae1dd0edc92f76e7c3725c990c0e85e6c16cfb783ab70. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR7JC1800240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda40e9de84436e16768247b495e03286177b27c8fa41c5fdd9c6e5b24b41647a. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FR10S1860734.