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 0x3004475d6ad5e17b462d9e3703d7a29830d41b5544c507367d62b193e3ccf64f. 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/b053200a-d880-43cd-9c46-4fee2caf1ad3.json and https://artists.proofprofile.net/proofs/artist/b053200a-d880-43cd-9c46-4fee2caf1ad3.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 0x4363613b1d7a8061779a2d83573906fbecb9c1b6bdcd5c2c87147433d5b36204. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEA890800319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8c5ead8597d644e7cda08aed2f597d33317c9649761af6d902856e4c50db95. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEA891300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22f21068ba76104591d6bc42067652f69490aaae54bc6a039e3973bf108fab. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEA891300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f99f158267a11f8daa401f346785ce8a2d0b7748dc31cfc0a782e3b3def52a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEA891300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a23dec619ff19ff15272fa334aa09844e18527b7ed7260938f35747f6637bc. 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/DEA891300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038c116a3e9e3cc1b1caaf04fb4af702919929d3f9b4adce32c4df523df778ae. 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/DEA891300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957854a0b760526019162929466b8cdf378cfc1023ce235348b1c7434b85f826. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEA891300318.
Thank You Baby! (feat. Tim Lefebvre, Wolfgang Haffner & Roberto Di Gioa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed968ee3c79b5894c6ae0de3a63510a342c020cf5e3f57674e5cefe4ed045d7d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEA891500453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997b2b31f253cf3e59758a33604ed6c976a905eb7002ef5723b4615fbe40cd7f. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEA891500455.
Who's Right Who's Wrong - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee22e7c5b2463f437e1c0dd6038816eab8222e1fef09b8dd40d9b538ff2ac74. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6P42377163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15865a8fde4628cc9f7c28a7d09cfc78d938185ad97b7f837e5d7f49f8bc776. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM7282395809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6aba2ac7aa76bd058e564ad48c4d362f442eae95eed415d1c6ea4edafeddf6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEU242300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0dd76e258e894b1009e29f448148827b3a888ad3dd239c2884b1927960614. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEU242300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa652589d7e845759efa8346b1b8cfbe0577e9ed8ec1a60f5cfda25713717f57b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEU242300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c139840d4f034355c4dee8e35db0a3ace9225010199ea303d692764bc75a661. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QMBZ92579439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74443c6c6b6c5534a1592a0da978f90040fed468e20b46fb26ac7e9c1a863fd2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEA891300376.
Fahrt Ins Blaue II (Groovin'in the Spirit of Jazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567d2b4cda53af4191278b851adf6ab48997e5dbf0d0ec9094c201c061b2097d. 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/DEA891300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d91dc4ed7884d4fb57b7bbc6255977dbd2dd5327368ff5c5cdf5d24b2a5d5c. 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/DEA890800316.