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 0xfcebf750de443a5c2a8e04762f8278de01ac60e9962581598cddc08b699707e9. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daa75cd1-b414-4d3d-958d-14f9cf176dae.json and https://artists.proofprofile.net/proofs/artist/daa75cd1-b414-4d3d-958d-14f9cf176dae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x1f46bf63025d1c592fa8194d64f3afd6871c1dc7a0d734af724c9f40df16c072. 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/SEAMA6820020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd035554656146853b49758b9d3f6f9f66f6df4ae5690c9d9640ec1c6987ceee9. 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/SEAMF7716150.
Beethoven: Symphony No. 8 in F Major, Op. 93: I. Allegro vivace e con brio (Live at Konserthus, Stockholm, 13.XI.1948)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88392e201455669db8fd36a491a88c40f1c2e55c279f0d82d9757e33f513aadf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBPFX1000022.
Oxberg-trilogin: II. Lapplandmetamorfoser
Koch: Lapland Metamorphoses & Impulsi Trilogy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d28946dd475ad52296eccc1b21131726ee8454c4a73e10cd7f1efb7929a54. 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/SEBAA1207501.
Impulsi-trilogin (Impulsi Trilogy): I. Impulsi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cf10df726a8202aadba9f96e7a7db5db57abad8a3e652509e064cbec9ce30c. 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/SEBAA1207502.
Impulsi-trilogin (Impulsi Trilogy): II. Echi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01306e85401695cbb1e9ebe2c9d44768e33d2f6daf6d7e991e5f1c1053b48580. 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/SEBAA1207503.
Impulsi-trilogin (Impulsi Trilogy): III. Ritmi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99834e6faa848c6745826466dbe9c891ea37f02e9a421d0b62eee1e2203d96. 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/SEBAA1207504.