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 0x73bb6b6e508ccebfb659e0a271459ca8c9c9413fe88c997172040d015dd769f3. 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/d2397008-4027-459b-85b8-02d313a472a8.json and https://artists.proofprofile.net/proofs/artist/d2397008-4027-459b-85b8-02d313a472a8.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 0x7d3309220154d706ef66c17e5b7b40028e1fd58de3f61d2c814d1eb65bf1dbfe. 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/ITH8N1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546827a417cbb6ad12ad24549e173f60e35fd15e8f6d222c4672e70de2563f31. 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/ITH8N2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912c9c80add19171369185bd27e1653c0360973bd2cbb4086d2801015f1ce1e4. 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/ITH8N2400004.
A Million Miles - CASSIMM Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93c8e35996bce35675ac17e774f8a2821cfdfb738606ae359a6900d3e6721aa. 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/ITH8N2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40ee93438f45b3f5770cd1594b113ef3a6eccb06d29011050bb61a980cfc9ae. 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/ITH8N2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d95db166097f5f41eb0860a989656a7f3b9e5b6e4aa0bf2578b2dae773cc8bd. 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/ITH8N2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cc44a234851f69af6fc449a0a0777be53706dfd78dbdd7fc16aefe59e59acc. 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/ITH8N2400025.
A Million Miles - CASSIMM Radio Edit Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6d680124a7438d0927e76436a5a63027b098d66481b867b5841a61b913b376. 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/ITH8N2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3400027d28e28270e07188bb8bdeaa778ebd023fe2925ca246020ebf1b04a331. 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/ITH8N2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24046fc3df2fb85b97fcbbd9ddca91bcd58719f278a6cd39ef3843f0708f1e9c. 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/ITH8N2500011.
A Million Miles (with Steve Edwards) - Live from L’Olympia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f77f99aa5ee920482de2f53c2140eb70a5d2e06f3287291341f9d22f1f5a6f4. 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/ITH8N2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0429924fae2d8bd3bc27a1ede79eb682067c55c493abbe9ba95ce36692c474. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ITH8N2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9313af8b34d2174083aba355ccd0101820fb0dc57deb82335dacde8ccfdef0d. 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/ITH8N2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedcc02cd092538a5e719670f198e89a401938e3482758fca4d597befd59119a. 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/MYUM81706967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b9712d737ae86c2448db2814fea030782eb56a420c1e4b1f86f18c4dc943db. 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/DGA062217435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb401dbe3ec7575c73a3d9e1527ff7cd64f8298773f656225f6c1b4ec3658c28e. 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/FRX202250709.
C'est pas des LOL - Live au Vélodrome, Marseille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad181122707e8147a26dc371229fbc93eb2577b6668759e123f62b411f25bb3. 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/FRX202250713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0f0b35ca17ac66490e97a217185528730e77ae3c852ab0f73d824cc2239c47. 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/FR0U92000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc256ebf9466cb80d6eecc21fdabd5124af833664bed7269d722a4ca1f4a5f170. 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/FR0U91900262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f4da173ea119e42a0f84ae389478179dc508b412f636313ac49b54ab6df14f. 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/FR0U91900301.