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 0x39567118440a1bd48fe74bfb5e4c8ce2656de32e523a73d9089e5a053e6d5bf0. 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/be6d14eb-4a34-421e-8fe0-d698f3817db3.json and https://artists.proofprofile.net/proofs/artist/be6d14eb-4a34-421e-8fe0-d698f3817db3.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 0xfb7e4617d2b923b5fe7c1914159b630613cbc23b179f05b18cccd22c3bb17d5e. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/DEU241603502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d0aac89f763031084e39ae09bed15433655d710838748f78ec3e58653dec68. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEU241603503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcd4a886659d954eb16198ec77de385d28a701b811c91db855c69cdc155970d. 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/DEU241603509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b2317801f27f19060f4aa66345c2c2e327130206d0e67c2f90ed8fe208a0b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEU241603512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2421c1b73cc541e65c5bb37274d4f790f1bbfe882200f8a9432f968b7f127755. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEU241800128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ea391574d9bfcd985ffb2de99c89356d8b9bbeeeece1057e96dc519990a08. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QM4TW2081670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12ed22c9d3f13d9dd14b61aab8cd81b6d0871c3dc1092037f4db0f60fc1ce5a. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QM4TW2081717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e858af5ff33351cc2d017d3efc2e4a8b193d6d0dc0bd690bd28eb28bb077b4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM4TW2081719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7721e95ad3cd2a8dc9f62424a2244434da83700ca48a4a60330d7e1d8f6d6bfa. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QM4TW2081720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17515fd68c963775843ed4d26c223d134938da876d7c7d7caf445e68ac554e0c. 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/QM4TW2081723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9453dcb1390b975fa8ef6adc001deb1788f1164554603475a733c18ec6ce8bd3. 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/QMBZ92100535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca5ce01d5220e678eaf4f414451c82bb564ccb3a87bc4dbad326579d378a04b. 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/QMDA62145787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b19d46faa10cc5cc5dde5f7494e480c1182f75176fc9784e739c2aa85012dc. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QMDA62145778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc59f452b8874d3f4171af573b1c874f3b75e7c7b84d3682992d0a49494e9014. 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/QMDA62145779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf77f93c1f46a80dce2217cb02273bb6897b0e7a0588b6c4205865be5e64278. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMDA62145785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd393255c950d3a913343704e55f868aec616bd953fa9c1679237729393c5310a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA62145786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb218f4acc68b2a6857ad14449f4e10bd8a7da83663abf5c4027ca6204e8a11d6. 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/QMDA62145788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a020e43b0d5025da8c8b63cde7abdd11f7707b9aae1f1c12c816166beb511f. 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/QMBZ92260835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaf40309c27701e20f9b2bff660a121db0f084967b87305c34ea4bf2e8ea396. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/QMDA72225821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb58a41010939198a1b371e993f46b81afe4a6673f673ea7d771199fbf15f4b. 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/QM6MZ2392196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a9eafeb73e37f77e88077c97271e303aefc99ec6e055d0bd31c9aaa75b3122. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM6MZ2392197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0457bb71b3b1e910b5f78b7603835d77fa87279a90a8318d9ab7232d5898f18. 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/DEOV42301262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f9141b2de8a0a30e1833cb3780c1cbcae7e0dbe2e094fe65aa367562887867. 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/DEOV42301260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2fe28b539b33be04e9c4cc163e09f6e0a262e5a76bb3cf1030ced0a1bf9eb4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEOV42301258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411f085d27f0cef0345ba82c82afc5baf42a74f4e80220342bb6484af50cb6a5. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/DEOV42301259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b09bc4b695fc897c47c09631e75f028e65b3cb10d80b0e1c5fae37c47b68c0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEOV42301264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ecd5642289473db1806448f7df64000e37bfcb66b98e6f6c11450893194a61. 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/DEOV42301265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527e8154b69d1e4ba149d74cb798386912f92ed844936dee2680505321514800. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/DEOV42301268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa972935135cbbce3b1d5fa8420c79b66b27d2f7d6265a7168400ac1239a566c. 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/DEOV42301266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1db2d68207c5c19e5ba109a8a3e3642bcb0bb0e5004ae7a10f76358387f14. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEOV42301263.
Bier für lange (feat. Swag Boy Alex, Pott Riddim & Der Butterwegge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eb43ccc8521afee2bc78525945dc9dd29ba41017e2669c278a58619d9bb0ea. 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/DELV42100150.