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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e059d66edaf247eb9b7447312605f4c450710ffafdc5aa9284aa0fc8ceffc8. Chain 2 (Bitcoin): anchored in block 953911 (2026-06-16T08:03:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18713b7c-22a9-4d6a-8d0c-3ebb919ba926.json and https://artists.proofprofile.net/proofs/artist/18713b7c-22a9-4d6a-8d0c-3ebb919ba926.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven: Fidelio, Op. 72, Act 1: "Wo sind die Depeschen?" (Pizarro, Rocco)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e59a6a592b4f2638f7b7e0d522c71e4fc36d9b4d649fe61728ffb7d30949a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC0301805.
Beethoven: Fidelio, Op. 72, Act 1: "Leb wohl, du warmes Sonnenlicht" (Chorus, Marzelline, Leonore, Jaquino, Pizarro, Rocco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddaf58e1792ded919d6769fb3d2a0443616eae0e4a3f826efe473eb21e4b16e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC0301815.
Beethoven: Fidelio, Op. 72, Act 1: "Ach! Vater, eilt!" (Marzelline, Rocco, Jaquino, Leonore, Pizarro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe491a769b6867880a25d60a9d21fd5a1d89e8b01458926ddbb7e44fbbdd4709. 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/GBAYC0301814.
Beethoven: Fidelio, Op. 72, Act 2: "Er sterbe! ... Vater Rocco!" (Pizarro, Florestan, Leonore, Rocco, Jaquino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abafec99a533f7048e25b9060fe482fa8e8bbf605c8bd27892f372de9682276. 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/GBAYC0301824.
Beethoven: Fidelio, Op. 72, Act 1: "Ha! Welch' ein Augenblick!" (Pizarro, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21496624567ca8cfe83ddd36b737dde0ffbe13801909b8192abb6864f2cef535. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBAYC0301806.
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
Beethoven: Fidelio, Op. 72, Act 1: "Jetzt, Alter, jetzt hat es Eile!" (Pizarro, Rocco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d71074100d782088bea2c9a540e65e13599e72e68e58cc4a0240c1be4d97465. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAYC0301808.
Beethoven: Fidelio, Op. 72, Act 2: "Des besten Königs Wink und Wille" (Don Fernando, Chorus, Rocco, Pizarro, Leonore, Marzelline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a68a4a435765bcb4de9942cde16b0826a5e9303054ab2c15720b1d36e3c1e6. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GBAYC0301828.
Beethoven: Fidelio, Op. 72, Act 2: "Es schlägt der Rache Stunde!" (Leonore, Florestan, Pizarro, Rocco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ab0f18d602a28057cfb12f652e49aeeb2a21c72b0188af6b4566b84b23a050. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBAYC0301825.