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 0x151cbd0afaf7dad8afaa7b464afd6be92d0c4925d81a5fd8d39ddd6b59c448d1. 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/2a49f436-6e58-43a5-a551-8488b9f9a874.json and https://artists.proofprofile.net/proofs/artist/2a49f436-6e58-43a5-a551-8488b9f9a874.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 0x152e93d93fc0ec49c245602df88e2c5021490e7d19c16d5c668ef6cf2c89144b. 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/GBUM71900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb9f0c1ebe123a7746db91888c629f05ad405b90ebba1d331f21ae1ad2130a2. 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/GBUM72000688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2990a53a0d69d3498da3735ffb948631bab1dba52b2f315ffb5878a8eb368a3. 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/US38Y2408430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4319f3158de41c2658bc848326ac01214c286f9e26c92cfb0ec258996b2ff2ca. 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/CADDS1700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21609a2496d2404962cc393f47f49d0da5241e676b46192095d89eea477b40ea. 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/USUYG1280325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460107020f5066299cdc7bc9199b69cc371401baecfc30a9aaeabde348f21e81. 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/TCACR1649840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9716e45d613ee80bf720c9a2a843d09d922c539eac217dea65263b7f1c930704. 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/KRUM71700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999969a7620d90dd65cc45227f18a3d568edca61e8db7ddab734625e6361f800. 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/QM24S2203062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719a1c3cece37402c547593f0307ff1f0f61220b14dcdc987c526c08b49e63c1. 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/USRC12003402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0774f6ab483fef3841c8286e6b901bd78b1da085e15c7d360b5da0a7de0b9bb. 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/USAT22001366.
Eternal Atake (Deluxe) - LUV vs. The World 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e39fc9503f335f3a8b0a6fac70807886d82927280018fe9f46b9ec6fa4599bc. 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/USFP72176608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999969a7620d90dd65cc45227f18a3d568edca61e8db7ddab734625e6361f800. 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/QM24S2203062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d4ace6e97b2c5730c99008534348b73cb82f3baacd8c0e0c1d119683c6a4fc. 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/USUM71713259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dae0a668486e5d46bf1561a9dc43caa2a29db4358ee7f79f0ae3311352a571. 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/USUM72302645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0b1e874d4ca870112e433fbd94298ad5020d08370d06950ac0949493cb09ee. 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/FRX762100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999969a7620d90dd65cc45227f18a3d568edca61e8db7ddab734625e6361f800. 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/QM24S2203062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eda9b2aa77ba1c589f8913ffd5d09f3cb6460578faf9181466c6fe415c2334. 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/USQY51401791.
On My Mind / Charge It to the Game (feat. Syd & Kari Faux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085dcc8a6d1c589fc4605c4fc79e0ccdc21c591ba12cf5048a5755d91b24afd5. 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/USUYG1192060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085dcc8a6d1c589fc4605c4fc79e0ccdc21c591ba12cf5048a5755d91b24afd5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1192060.