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 0x2e98fe78dc79621262260555cb8733d0096a9ccf9fb28ce16bba060ce9a9c7d9. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1625c9aa-f7a3-410c-ac86-1ede83d32460.json and https://artists.proofprofile.net/proofs/artist/1625c9aa-f7a3-410c-ac86-1ede83d32460.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Renaissance Music At The Court In Heidelberg (I Ciarlatani)
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 0xde7c125d88b5639cc47cceddd93da375da02e61f28b9c74b8c587c54a295da84. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB909600217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd731b3a4eaaff2dda05bcbb2816f288a89c298efb0da388dc41440013c304e61. 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/DEB909600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09e0febb2d19a606305eea3fc89fd20423c002607e6b0f05b3fad2199242afa. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEB909600216.
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
Chamber Music - Coprario, J. / Johnson, R. / Byrd, W. / Dowland, J. / Campion, T. / Engelman, C. / Jeep, J. / Praetorius, M. (I Ciarlatani)
Alfonso X: Cantiga No. 109 / Bernger Von Horheim: Nu Enbeiz Ich Doch Des Trankes Nie / Vaqueiras, R.: Kalenda Maya (Codex Manesse) (I Ciarlatani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d1a01fd31a3e6461cfe330b5622bfcf4557a40ecea70d321c77bcb13d5534f. 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/DEB909600504.
Nu alrest leb ich mir werde, "Palastinalied"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02700fad1a07afb2de0d2f9434fac5d18589db465ef6f7631042de9e217c9f0f. 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/DEB909600508.
Cantiga 166, "Como poden per sas culpas"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bc2cbb425d72e0480f66894e4c1d342174dc5eda20f1ab76794414b0b13e53. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB909600510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14ee837911a386d8a295212a8ef7818d2dbb14d2a1d8d4e20f3534940954e27. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEB909600511.
Vocal Music - Othmayr, K. / Brandt, J. / Forster, G. / Langenau, J.L. / Brandt, J. / Lemlin, L. (Song Masters of Heidelberg) (I Ciarlatani)
Vocal Music (13Th Century Motets) (I Ciarlatani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beaa90f628873566a97e0d9da2c6c3dd41b22fee658d53f4aa46856bd71e454. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB900101302.
Der winter were mir ein zit / Han ich iht vriunt, die wunschen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601f7458d283a4569bca59e1b2c07799216059841fae8e4d06ff6e94862979c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB900101303.
Min herze vnde min lip die willent scheiden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34767cfceee7d1a33dc1868ce60f365ecae1e8b00e22a9f747ed90f47b4c8cc0. 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/DEB900101304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded25923e5d4018f67593571a2cdc047f38f5f9e770d509a5984320c2470964. 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/DEB900101309.
Winter uf der heide bluomen selwet - Wart ie bezzer iht fur ungemuete - Daz die milten also fruege sterbent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946dfd2370d23dc2d8c35492c4557dc3f53a202b6e3c2ce3145dbc9bd656264c. 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/DEB900101311.
Vocal Music (German Courtly Song) - Neidhart Von Reuental / Monch Von Salzburg / Oswald Von Wolkenstein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86e0fdbf94bd8deb661e625c394c24dfa6948094d4dce4f5b6e3869192da559. 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/DEB900400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3027e5e464887698887186fc3ae2ec739d0fe3af600a57849b565b82dace4dd8. 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/DEB900400704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1d62b0dd1c899f1effffbdcfc679f43aadc726008f02f302729f8b6cf67a0b. 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/DEB900400713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862e9f7764791b86fa5887ea604ed9578adc5ad35e799097a2bf41fefd9a12dc. 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/DEB900400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa0e79c7de91a60678e9e38ffe53fe1e9fcc8dd8e11cdbb161604dbdb2f53f. 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/DEB900400718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecabb959eb25dece92abc29105379899890a4d05c30add27dda0c1668ce456cc. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEB900400702.
Baroque Music - Praetorius, M. / Mangeant, J. / Cordier, J. / Nau, E. (Social Dances in the Early Baroque)