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 0x5f948af9c9e06d8a1388450b710922ccfce5f17e5c863976431d33f0efebda8b. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ff53067-7a79-42a3-9c6c-9be890b6773e.json and https://artists.proofprofile.net/proofs/artist/4ff53067-7a79-42a3-9c6c-9be890b6773e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Elijah, Op. 70: Introduction: So wahr der Herr, der Gott Israels lebet (Elijah)
South West German Radio Symphony Orchestra, members
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 0x99a297368dec6e270a774f5545f4cd97c52a9f869e20072e11cdef0c8e27d5fc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169138 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354af14554473da46302ad72b1a24e66554404a487678d34325f75af953fbe26. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169140 — a six-check JSON result.
Elijah, Op. 70: No.1: Hilf, Herr! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb43e2d854eeb27278aea8b8ae1db44f80acfd71c30078a47f463ad0b875bcc4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169142 — a six-check JSON result.
Elijah, Op. 70: No. 2: Herr, höre unser Gebet! - Zion streckt ihre Hände aus (Chorus & Duet Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818dbaa7fdc25ddea206aba6c10dae6337b41b335089e23cec3a5b9dbc9c17d7. 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/USA371169144 — a six-check JSON result.
Elijah, Op. 70: No. 3: Zerreisset eure Herzen, und nicht eure Kleider! (Recitative Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bebf2ff8df70e1dcff7482a7e67a6d5c163e639f90117d50977403d2c81843. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169146 — a six-check JSON result.
Elijah, Op. 70: No. 4: So ihr mich von ganzem Herzen suchet (Aria Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ed7f5496e2b1babda52b208a1c5ca1bb614700b9c7a8fd4059b8af80fdc27. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169148 — a six-check JSON result.
Elijah, Op. 70: No. 5: Aber der Herr sieht es nicht, er spottet unser! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b6cee3c78205bdc4f43751bac56f27c846183abdbf44dae73bf7b218d29938. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USA371169150 — a six-check JSON result.
Elijah, Op. 70: No. 7: Denn er hat seinen Engeln befohlen über dir - Nun auch der Bach vertrocknet ist (Double Quartet & Recitative)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5547c1ae6a58976e1e9cee8a65f6746562202ae8021707c9213a454be1f8ac. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169154 — a six-check JSON result.
Elijah, Op. 70: No. 9: Wohl dem, der den Herrn fürchtet (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0561ed116863f27aebcf1284b434ea33545f590fbe801ce0e6a512202810caa2. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/USA371169158 — a six-check JSON result.
Elijah, Op. 70: No. 11: Baal, erhöre uns! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53d0351e568f2fb7bcbd6c98ea2647405be65e21e676467a168db000cb5634b. 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/USA371169162 — a six-check JSON result.
Elijah, Op. 70: No. 12: Rufet lauter! - Baal, erhöre uns, wache auf! (Recitative & Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2a599cd550d32d48c60ef537391b26e4b39a71b794bd3dad66966d4d0dc4b3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169164 — a six-check JSON result.
Elijah, Op. 70: No. 13: Rufet lauter! - Gib uns Antwort, Baal! (Recitative & Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeef1797f3a71e2d5da43a673f0cc89691d07dbaf66e7252447e53568805597c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169166 — a six-check JSON result.
Elijah, Op. 70: No. 14: Kommt her, alles Volk, kommt her zu mir - Herr, Gott Abrahams, Isaaks und Israels (Recitative & Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c485a80edd3520f4ebcec2335f493f98ceb41224d931ea12222422620277d7a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169168 — a six-check JSON result.