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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639f0e929fd67292d65421bb87eabdb3bce35650e5ab22a358246349c4a88414. 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/7e691a6d-236d-4886-aadc-77e7206fa144.json and https://artists.proofprofile.net/proofs/artist/7e691a6d-236d-4886-aadc-77e7206fa144.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f62fe7c70c054b3638f06699648585aedf5ef5d3a50dec19b17f70f0fded569. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/FR62U0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeb5cfa6ee0caa83a86419a9acf6678f4cbf162818d7fc3a43ca61a0f51e37b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR62U0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eeab6a8d80a7cf090d83f3dec084e6ed1c16a556af3cd7e59cc15cf19d9d21. 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/FR62U0700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb98114f9f1f3dad8eb40a316fdd383a955a56cdcf116db7993211a95ba56787. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/FR62U0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3fb17adf9518439d40ebdb7bf9718bed085b5159ea6a6c197c7ea162e952a6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR62U0700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1926c073ccb8892cceaffd19bd315b94e405a1bc1f62331fb842612f1b232e2e. 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/FR62U0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882fefe8011daf18b67175dda48cb7f1418b1b33a5d83b981724f95cb434fa66. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/FR62U0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52f12102aa9f7392adf698fe92b78eb6d74c345e3bec173a97277aed780a05c. 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/FR62U0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cbdfe1a6faf6c01272475a7fe71983a32566f6b879882122023334e31c6ac7. 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/FR62U0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d97cabc48210233991a0dd5d63d9bf65995ab69702048a9846c8e784659861e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FR62U0700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0368e8963092913bf5b0443ee9374e9c8cd86de6a2b054738f252ebd38c726. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FR62U0700017.
Ese Toro Enamorado De La Luna - Folklore Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c241c2ef1ead7f02747861f93ae7089e234737fece5ff568cc6da3741f259ed. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/ES5770690452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd53b7f037da6e1c8eb7d24957a70425748c721f73cb5eb2101a9ab0941a94. 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/FR62U0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1143784b723ca014187451ca4349398729f0bc47fc1ba8d72777e557208298c5. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/FR62U0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a54b34d4f523c8294a9f8f205f8f71703f7897a33bba0fab254dc7c083b426. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FR62U0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b984963581acd5d71b9d01b0b48fdc44f54f92b382d4893548f25f12315457. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FR62U0900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae3d5090787ac0e2b7851499881fca54c4533b5fc9de246f1e917df51f29642. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FR0U91202074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cdef2f4c4174bf9cf4ed5cdb3b63d51ed80a2aeb9079cfc2efe546739c5348. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR0U91202077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6acb9ae67df63c33a644a54a7fecae06de4d42e40e18e39723132d3991a8317. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FR0U91202090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cb49a4acbbb7efca047e95f62f16006147940eb04c6fa5ebbce5c8ef805208. 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/FR0U91500818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1cd7a3d4b91f0053e3c472a01d92c0813cc597e7137c0a21449d1209c52a9d. 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/FR0U91500821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45d9049fafdd2c44e83b666444fd1f2400035d2ba2dd0c2b0ebe606ea9921cc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR0U91500822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4ba14b0ca57a8b8176a2dce40da5f36510a1ca9fb05c24832027304218b8dd. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FR0U91500825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f91930d2d4c4ea415f24dc9289115ef79edb1346db5b2b41dde98b3ac3d76e5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FR0U91500830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be62eb1e39474f5193564bf5458b2a104c78cad9d6b3aa53c0eb74b3068fe4c. 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/FR0U91600904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abd039357333beccadec09208b45bcd66b3f388bbc1943428876ca72882a311. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR0U91600909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b6cf4a42a6b04854fd6b991f7d95316a076bd61f4ef86d7df91de4fee94a92. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/FR0U91700479.
Polémiquement incorrect, ep. 0 (Groland)
Polémiquement incorrect, ep. 0 - Groland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d63e8ae8c0fa647b020a80e4768c384e2a7f8cc0ec2ed6939e342e32b2d5eb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/FR0U91701158.
Polémiquement incorrect, ep. 2 (Fake News)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796bd6ce16ebe7b8c9c224045e971b49f52fbf8f43a1ee9c275e5f4fd5c4bd8a. 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/FR6Q11400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9867e890bdf19f30b17972464adb16ec817a71798d80dde78ca55b6c30191759. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR8GV1830390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9596bd9f13165c279448b1735719f2c959f7e45caf53381cf8b16db99dae9f99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR8GV1830480.