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 0x7147bfd5f8713da0f6354030b6c3c1e9a39d767de017af4de915b322c1522eb5. 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/58b208ae-259d-4697-a35c-7967c42ed0c5.json and https://artists.proofprofile.net/proofs/artist/58b208ae-259d-4697-a35c-7967c42ed0c5.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 0x8e1556c41b654ceb67d87c2ea6da688d5b86d7a366c2f375269d2dd867e445db. 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/QZW9L2312229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ca0bb00ce49a12f65d21b46b4cc57ed8b87219b53f66bc4d9d66e28e257441. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9L2312230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464483f916c28a7f830520c46f8dd3ad3e12601f1686602557357865b68f3059. 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/QZW9L2312231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87357ad03175396f5540a9558b6b1a4e18e096605cdbba393ec6a563ff523cd6. 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/QZW9L2312232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64da981963ec22cc659ead865c25ea61f6d7c830d1015659b7f9181ad949896. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9L2312233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d87889fc2ffdd2c4c641c448c813ba99b67d6764f2b22968c8e62a54d089e8. 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/QZW9L2312234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b18f0f48965e07d61a0e7343e1170f0f6b334ae997d40cac539158b6a9e11. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9L2312235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a34126e3601c2f709bd18c0508a012e0f71b71a0ca02b1843706a221a19234c. 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/QZW9L2312236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6497ae5643f22cc7c40439c005d7462c6b013f9f0fa8a3fd96e727ca786ab5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9L2312237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc379bbfd2661c1e478cb41397a257484b303ed4b145c66cacb41db261ec71ae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9L2312238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e1a2c8cc9fe7fab87201553bc6ca0caa3163cf51959431befa6f12f1a9c566. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9L2312239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb9eef5560adb7a6d919f0889a31b0761a0dddf62af42ddad1e4378c4138df6. 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/QZW9L2312240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f46053741a9ca9ed0546aef97aed59d63566893d7fd43e70d22c3830ebaf38. 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/QZW9L2312241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae33b20dbe7cd8dc645560444290f049d0053fc88db387276667caf375441fe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9M2318236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a24aa16a0b46689512cfa40f4683ef9fabc824c9bfccfa44e975c5b5a3f6637. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2448249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60f44696fa0839d951f0daf1c5e51f135b1b65cd063a309cd991deaed83f761. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL2444026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607e7e805ae984e3491d2a9f9a23e2f2224e1387981b01e342803001e0cf4de9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL2497172.
BANDO (feat. N.A.N.A., M'DEP, LH CHUCRO & DESSIIIK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40fe5f6fa508fc5ad8e5bf112d90db84fad8e2ce08478f2bb4f61dc5c98d891. 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/BK4DA2412802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069543b9d3e7644464956578aad85ae2f7d53c099ffa91215aa59ee47c571ec0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM72401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607e7e805ae984e3491d2a9f9a23e2f2224e1387981b01e342803001e0cf4de9. 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/GBWUL2497172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76539ab76a4a5a8d151fa66d3aea6798cf6c29d0f47eb2aa861b567042814262. 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/QZ5FN2485821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76539ab76a4a5a8d151fa66d3aea6798cf6c29d0f47eb2aa861b567042814262. 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/QZ5FN2485821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f42469ac26072131dbcf6adf59ab4317e60d60fda7a1d510b81305b983157f4. 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/USLZJ2488675.