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 0x4472de704349c4b9da98357db0469f5ed7e5f4a30232fc4b773fe0b997f721d7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/619b103b-35c1-4bf3-a8fc-77131f1fa564.json and https://artists.proofprofile.net/proofs/artist/619b103b-35c1-4bf3-a8fc-77131f1fa564.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Via Crucis, S. 53: Andante Maestoso "Vexilla Regis prodeunt"
Liszt: Via Crucis, S. 53; Missa choralis, S. 10
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 0x0ee6ea4aa4eb402b220609b6496524d324da7e28956cc9a4c0487d67550b7331. 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/DEB119800501.
Via Crucis, S. 53: Station I. Jesus wird zum Tode verdammt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22847239f6b79e85f48d688e8474c614b5c8cd6cc14c4e43fb051b873af83e8b. 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/DEB119800502.
Via Crucis, S. 53: Station XI. Jesus wird ans Kreuz geschlagen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf6c6d05a4303e6fb26679ef024dbb2c3e9710314900ce9b76b43c30f5c3bb. 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/DEB119800512.
Via Crucis, S. 53: Station II. Jesus trägt sein Kreuz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde211c450660bcdf3b4db7cade4b46ec3e5f4b0afe36c5651c568f2b50368da. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEB119800503.
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
Via Crucis, S. 53: Station III. Jesus fällt zum ersten Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a443f290066a45e739c245d7705f866edacbb0cf449ec3edde280a728d05ed. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEB119800504.
Via Crucis, S. 53: Station VI. Sancta Veronica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed845cc7460db81d0e761003665b2c07ac9fe07c88bbae8582b41a7be40b4dfe. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEB119800507.
Via Crucis, S. 53: Station VIII. Die Frauen von Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ef2fd408f0f65e76aaf4e22e5cd8a2757f26271ee320d0cf53a8c19013f327. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEB119800509.
Via Crucis, S. 53: Station IX. Jesus fällt zum dritten Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91d33e8100a7689269efd298bd799ac41f072632f234429afb0b046815876a5. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEB119800510.
Via Crucis, S. 53: Station XII. Jesus stirbt am Kreuze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b948f2121ff4bc00ed859835dd4a196e473992ce6a40b06762c7758b6c6cca. 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/DEB119800513.
Via Crucis, S. 53: Station XIII. Jesus wird vom Kreuz genommen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8243792ff4d18c6ebe0b492eb89bccb0efba550ae7bef61e70af1e08b0a656. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEB119800514.