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 0x4df3e6aabde1fc047744cf9368b52bf2682feb02caced60708c4690a59ecaef2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b20ad64e-3cf4-486e-845d-ed8ff3bdc445.json and https://artists.proofprofile.net/proofs/artist/b20ad64e-3cf4-486e-845d-ed8ff3bdc445.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 0x7fdf9291b65efa8a51c744e05b1b4c335c1c2fc9312cfd2ff95c976f19826caf. 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/QZFYX2106326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f5ba3b868e52183645cf695710b348b0e567db2b1ca39dfd28c0e01abdc1d4. 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/QZFYY2114825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e74eeff392bd9e6624eb4dfd9d1d73136992dba50a759c93d4ff653fffa4106. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFYY2115891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa79b19faae66d980441ac711ecb2398263591ee267b005c2d283ec54560244d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:52Z), 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/QZFYY2134027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e8437aef001faccf24f1debdc0d508664f643b0448f86b46c44e4e14588215. 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/QZFYY2132664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2a3893a03a4760b406323553222e9af9fb0af10c79213d22e2710752f55bee. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFYZ2142131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb6b49be01158de24da65cdc12f3940f49af07bd98b0b7b2a5837469d884b63. 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/QZFYZ2156955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4412f0b54311617ae6048723499f9fdc0072cdfbcd5222192d5d020976efef4f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFZ22179077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69b4e6fbf87cf4c0eb20b9c526da0eb1876df0fa0bb53dd75db9f12702634bb. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZFZ22176646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55503cb635efdf404731a14b93f862302884c1b40280684e83bee2b749f0bf38. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZFZ32194702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813ae8d980d575b9e5c6a438bf15cd4c2a5f323d8ab8e57b5f98b659f3cc3d05. 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/QZFZ32194697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44290fa6b786e77c39738ee7f173a0c45021523a7215eae29f24f52bf7a4132. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZFZ32194696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf660aba530f0560d8556c568788e1d4d80dffe5b42b36f5717b901ef958b3ef4. 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/QZFZ32193331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bc10ffb73fbd6bfcae4e5d1f99cb2617daa37cd6d67ccfc63cff19c30956cc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:06:56Z), 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/QZFZ32194694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185cc41eaef11048f764c71032a3744e37289d673939f5a71aca613740234d6a. 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/QZFZ32194695.
Ik Heb Gejaagd, Wel Jaren Lang (Johannes Brugman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750e2d1dbe8d362d6885b2f1e466ccb2bd33b2837f4a5cacee26695100aa7737. 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/QZK6K2179802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd1f30aa67a971c2189520b5772f67a4e06b3ac3fe713b57a585346573fe297. 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/QZK6K2182026.
Tant que vivrai âge florissant (Claudin de Sermisy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7731e03a09c199e987a46cda280fda602ee5c80dafa39e078d0abababcf31837. 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/QZK6K2182478.
In Dir Ist Freude (Giovanni Giacomo Gastoldi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7cbec70ae0f24e14dca88b1557804b85a7d7be657b054efffad66138d68d2f. 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/QZK6K2181372.
Gods Glorie Ende Heerlicheyt (Ic hadde een gestadich minneken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38a6dc11a4767a06670f49ca2dda0e0e7df146afb6eb2f1617f314e1fa89de9. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QZK6K2181370.
Swinging 4 Big Ben Taylor Bells Plenum Peperbus Zwolle NL
Quid Tu Vides (Perotinus Magnus of Pérotin de Grote)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9810b567ccaea387f3eb613eedfad5d322185dd54098bd63345b12bfbb9585a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZK6K2181374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38eb3f2e8b434b6baf01f2ebd8a799a481a330767266e2f65a7c7196c8a460b3. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:31Z), 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/QZK6K2181369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddee2d6d6f59a4fd7c4853b3bf75ca14ff55582e1c4eb0370d21e24ce955d6c6. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZK6K2181368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2815b24c1f3c8f963c760b7a72b6620f9f7f30734f64cb8242fb5236b188ebd. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:29:08Z), 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/QZK6K2181392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9241d325cb0e52dbefe0792da6bb411592ac90dc2a8572ff26d154eab81e71ba. 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/QZK6K2181373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaaa507d1247665a9a6bf567634d5c848da0d8be3918d5b8f44684888219c7e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:59Z), 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/QZK6K2181367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a61a5e25eecfb114567f6dfe5b1b878a58aa08a6e581ed2a3ed834b5e235b5a. 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/QZWFE2325732.
Roller Coaster (Taylorcarillon Hattem NL)
Roller Coaster - Taylorcarillon Hattem NL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c4d8d53b380a77d6e036dd10b8deb2bdbe377d1c81b8e842ee2fb1ba2f311. 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/QZWFE2325313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a15777bc3b3f1284705e4620b60afe1b9cf8c35e0961349e11e7ad3423a024. 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/QZWFE2325721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfad514deee255560aabba3497f4f70165cdc3ef70986b28aa4a6c8b828ac2b. 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/QZWFE2325716.
Souvenirs de Bach (Taylor-carillon Peperbus Zwolle The Netherlands)
Souvenirs de Bach - Taylor-carillon Peperbus Zwolle The Netherlands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241b3e39870d8f51d8638ef7c34d12c9d072c8612c96cacf8afc56d4b9ce3d74. 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/QZZ7V2490927.
September (Taylor-carillon Peperbus Zwolle The Netherlands)
September - Taylor-carillon Peperbus Zwolle The Netherlands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8917a50633cbab68a5ffd30b3ce889db106e549ea476fbe7e7260b674df2ad. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7V2494077.
Samen in de Naam van Jezus vers 1,2 en 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdbbcb1c2930a67e3408d89ad2919745cf3caed479e1b7224a4e30c88ad5c9b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLCQ69740501.
Dat 's Heeren zegen op u daal | Volume 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45baa8e03329331ab4dc714fcd9801951082713b9da19eb239cb888c156f3e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLCQ69840508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3f924f82eab8751a48d8dad14cc872a40ff2d5485bcda5f81a853c21505744. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLCQ69840510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783ed849cd2c4448d4d9100670f70945e5cbc486aaed3393d261fe6ddab695a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLCQ69840501.
Eens als de bazuinen klinken vers 1,4 en 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f5d2769d82f1e916da05112a986dbc4b9646b423e937b4de1b26f79e294786. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ69740514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1334408b5b20d56b755b39fcdbcc52e74137b7fe3010d6e08bb630b06ab8b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ69840504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a82e2cb268de6cef4a2d6cd2bd0e013f89104ff6d85659cccaeb1ca7ca0285f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLCQ69740504.
Lof zij de Heer, den almachtige Koning der ere!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf6e9c29b4ed7c4ea120d2047b9530011ee4be4a071051c281610521025b4cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ60543802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad60978c7dbba807ad200f92c71626d04041b4ab6dbcbe4af7edfd3199221d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ60543804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9859258a2f3cbafc7c6533cc3ec33fae161be4199bda217ff69eeb0c4fe23e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ60343808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7d6b2b91cad549a9176b88586e01a8ac05790607c63a14af0402b01cdbf4ab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ60543812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90b16358e268a038e137fe49500a809bcde48a7d276a152be2b410e161d7e89. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ60343811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd566929a0373efedd4990e5b94c605b41d0152661e19d695b4c24d76a0f67bc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLCQ69840506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9911aceba891d010e4051d21d0cae267ac4920f72a562bb1fd438ef82ac9e3d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCQ69840512.
Lichtstad met de paarlen poorten vers 1,2 en 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f741cbf0dfa23847d50c433cb4dab3dfeb3fa752e55cef26164804a6867f5e. 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/NLCQ69740513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32745a69a04ed1cbec3096c38e4a0d95e22db90713ce197319aeb35b50ae4ca7. 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/NLCQ60243804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc824b4d35b4450ba1e29230617df7f1767f7bdcabae6bdb002567f7206017b4. 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/NLCQ69740510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e1756754602bbcc33577fd870caf7bde742afa47ba86f203cc6e7535b1806a. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:43Z), 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/NLCQ60343803.
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 0xf51f05dcfb2d33c476b26b0e5968b6cb465fac7d30e286004d23bcb1ee2dabfc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLCQ60543813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb4d73b84fb9a14de2ba752a2590130472367abbe8982e104d43215793b6f46. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLCQ69740503.