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 0x2e8d1246227f3dc7cb9cdbaf91e5b81cee0ec5017e6c9efeb946c402438c70fc. 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/429ff773-655d-4b33-8d97-8c1517e00564.json and https://artists.proofprofile.net/proofs/artist/429ff773-655d-4b33-8d97-8c1517e00564.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Goldene Operette / Der Zigeunerbaron & Der Vetter Aus Dingsda: Großer Querschni
Die Zauberflöte, K. 620: Pa-Pa-Pa-Papagena!
Mozart in the Jungle, Season 3 (An Amazon Original Series Soundtrack)
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 0x3ca728117bdc287d24144b4c9612a9b39b7c1e8d9cc6e3561b5355e28c502663. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC18000225 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Wo ist Salome?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd70aca5144e22fe3b15006ee5ea34948a9678a81425e206a51d6ec4f0437eda. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030318 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Salome, komm, trink Wein mit mir"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3921f08d1eb873187427b7529bce348c17cb9096ec0157f382eabedb47390ed3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030319 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Siehe, die Zeit ist gekommen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa6bde557dc352d00f7b2d77b505652d84771a160ede44e639b4871e02eea2f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030320 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Wahrhaftig, Herr, es wäre besser, ihn in unsre Hände zu geben!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e8272fa9138064b37eed1a29566f69a5fa39f8485cffafc8c78c237c7d18ed. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030321 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Siehe, der Tah ist nahe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d310dc33e49b4dad8f8333a3430e0bc87ffd6e9c00a71a60b8f672e70b3a57. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030322 — a six-check JSON result.
Salome, Op. 54 / Scene 4: O über dieses geile Weib, die Tochter Babylons
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5078abe23a3717988d3a0c5fc09cfc25b2585cb10ab015b66c55c26a550c1077. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030323 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Tanz für Mich, Salome"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605f0a63ce6bd3de67172df3627aabc268a423779347782dcfe19740e0d4f4ba. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030324 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Ah! Herrlich! Wundervoll, wundervoll!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb2daa883923256decc384b7a0774dbd5ce8c033ac09eda876e74eb1dc5f8c3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030325 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Salome, ich beschwöre dich"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ddde85f5d2caef5d3c52e19b6c218e9ccfeaeb469344c2b54eb23cfe30eb12. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030326 — a six-check JSON result.
Salome, Op. 54 / Scene 4: "Salome, bedenk, was du tun willst"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34de6fe8a6e5b843a1551cbd69fcf07b50c5266a576747003947457a0dabd60. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030327 — a six-check JSON result.
Salome, Op. 54 / Scene 4: Gib mir den Kopf des Jochanaan!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5196ec07892345777171444e9c6e2fa66ff388e5e9d486da21a1446600c33c4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059030328 — a six-check JSON result.