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 0x5255205d6661e7c85708886172f5b297694f86bfe9f9ffb3497e5ada7b73ed87. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0875489-3d18-479a-b1b1-7efcedc41ce4.json and https://artists.proofprofile.net/proofs/artist/c0875489-3d18-479a-b1b1-7efcedc41ce4.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 0xb815174c57709c586dea0203c6e10869b107adea3438a67f69f3a78cec5734a1. 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/USHM90770887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4466531b9c9ed1a78be3591c4b6a9ca216a78ea1503094b73bb785c9197e02e. 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/USHM90770888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd812c917dc81af9d889a8a1272ca2500d09acd72ce610a759a1772486cbee08a. 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/USHM90770889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af237c6d2605d52f4b50b45686c1ce321fb6b042327e67b05162e1f245e6a72. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM90770890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c10fc707cb47f2c83950aac66ae09d4781f735a5e25073608006615a233c0a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USHM90770891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b887d9374d8a1e48e090b414ba43c84abcd5a2f52f5fad9287b6a9d628b6bb. 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/USHM90770892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789a4a41e848100d7ab9be254086da4eb3c4053c4adfe3229216498116193c0c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM90770893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369bc6ba3a93ca66d6dffc09b8b453ace29a0a7f7e500a40afe0ba35ad7c1a3. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USHM90770894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185327c548fe72d2e0bfaa89eda73830243a4d6906e04ee2201f2aa8afe20a03. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM90770895.
Misery (Finger On the Trigger) (Live '79)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf137f0fb4bad05b9d49bda403bde941b89562779bfe3bc7613e1d65e301769. 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/USHM90770896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bd76b67465e6fa63007d5b3405e0536c509193d1ccfd615186ceeee9c50209. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM90770897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf601f7fe83828751d84bc5db811ba425e19b1c8c5b211fa019af2f477dcf0b0c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM90770898.
Punk Rock Raduno: Three Chords, No Brain, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6601956b2e34b1d396d60786a9531a393d279c9c61a0613750e6d16213a148e2. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBKPL1955308.
I Wanna Be Well (Punk Rock Raduno for Bergamo Hospitals) [Live at Punk Rock Raduno 2019]
Juoksuhauta-twist (Elämä juoksuhaudoissa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda8315aa1a2632e6702b45a8decca39643d7836159649e7f8dd9e63d29aa877. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FIFMF6300021.