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 0xe8daa1143bf830868d342a9d87270ef3e966f388097ea754ad236de66c2d7e02. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9756146f-be53-4937-86be-3ce946197e1d.json and https://artists.proofprofile.net/proofs/artist/9756146f-be53-4937-86be-3ce946197e1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
St. John Passion, BWV 245 Pt. 1: I. "Herr, unser Herrscher" (Chorus)
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 0x70918b4599b66db7a0f702b55ccbf8573859da5a791f3aa13abe6a803bf06944. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBELX1706409.
St. John Passion, BWV 245 Pt. 1: III. "O große Lieb, o Lieb ohn’ all Maße" (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccdbb30c1678083a85cb4b22c63f82533b918f05bac2ddd9e5ab0b3bc127b58. 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/GBELX1706411.
St. John Passion, BWV 245 Pt. 1: V. "Dein Will gescheh, Herr Gott, zugleich" (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb905f356d5a8a35fd859623690f1bf496d68f7961d8abd21c2f8fc48ae939c2b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBELX1706413.
St. John Passion, BWV 245 Pt. 2: XVII. "Ach großer König, groß zu allen Zeiten" (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724f9e1f6a8f581dc9bb94e33b72e7a8d579789f79b3a1d627fe955833ce6f38. 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/GBELX1706425.
St. John Passion, BWV 245 Pt. 2: XXIV. "Eilt, ihr angefochtnen Seelen" (Arioso with Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1236f281b19214fa51061a8d9f28410239505216907619d7ac8265e2a4f3a52. 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/GBELX1706432.
St. John Passion, BWV 245 Pt. 2: XXVI. In meines Herzens Grunde (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d6346e6e6837c1038cfb6e99130731d88f21725f687bddd4028af4f769caaf. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBELX1706434.
St. John Passion, BWV 245 Pt. 2: XXVII. Er nahm alles wohl in acht (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac2217ddc72cb5c537488bd36ce18f44d4b1beed94d0ebe80d3b3028ce6fc3. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBELX1706436.
St. John Passion, BWV 245 Pt. 2: XXXIX. "Ruht wohl, ihr heiligen Gebeine" (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd429a7ce29d1e2d706c95bca89ae7786fc69a28bce08876410273e1ffbd51711. 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/GBELX1706447.
Israel in Egypt, HWV 54, Pt I. "Lamentations of the Israelites for the Death of Joseph": II. The sons of Israel do mourn (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5c0e044fa228e86f21aec416371f31661d237ca7b777a861ab90f1eb332e70. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBELX2308617.
Israel in Egypt, HWV 54, Pt I. "Lamentations of the Israelites for the Death of Joseph": III. How is the mighty fall'n (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32799354c579c94e2d343257199a585f57d960baf772a93c15a49ec961c6a46a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBELX2308618.
Israel in Egypt, HWV 54, Pt I. "Lamentations of the Israelites for the Death of Joseph": IV. The righteous shall be had in everlasting remembrance (Solo & Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6578fb811d83491fa3d6aa082b87dc9e6b10d3610cfe4f4bbc4e93dd586b2a21. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBELX2308619.
Israel in Egypt, HWV 54, Pt I. "Lamentations of the Israelites for the Death of Joseph": V. Their bodies are buried in peace (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e032297c1fb624e4f810129df4ae7e9ca206bdf97e3a016afc3a95b559c7365. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELX2308620.
Israel in Egypt, HWV 54, Pt 2. "Exodus": II. And the children of Israel sighed (Solo & Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f00dceef161eb95d59a4f864212c5f926324b2f033ecec293ae7791c1ee282. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBELX2308622.
Israel in Egypt, HWV 54, Pt 2. "Exodus": V. He spake the word (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498e92c4843db9394f1279c8e42b5e8e3eebeedd5614f19d3f8bb123bdcfc883. 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/GBELX2308625.