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 0x2953b025d47882d0be433ad6ab34ab8905537af2bd355376d4ee231bea1ab96f. 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/5b08fbd8-a55a-4bfb-a1a5-ce08e0ec9e52.json and https://artists.proofprofile.net/proofs/artist/5b08fbd8-a55a-4bfb-a1a5-ce08e0ec9e52.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Missa Viri Galilaei: Missa Viri Galilaei: Agnus Dei
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 0x94d5dce4e0c463cde5f33f3b0ca802ca8dded6b079adda9c03a714f20df1502a. 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/FRZ149119100 — a six-check JSON result.
Messa a quatro voci da capella: Messa a quatro voci da capella: Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a4cdbf406c22e3cf34db42c458fb489fd57f87b6fbedfa73ff9a86c14aa342. 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/FRZ149031050 — a six-check JSON result.
Ave dulcissima Maria (Renaissance Motet): Ave dulcissima Maria (Renaissance Motet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c4234dd4d979c7df20ff838154c966d84a44ed9f4b17e56996653feccbc169. 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/FRZ148919100 — a six-check JSON result.
Sabbato Sancto: Resp.6: Ecce quomodo moritur justus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19262c739c04153ad8957341902e0935b9b638579be06e919fd4f146969ab59. 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/FRZ148919060 — a six-check JSON result.
Israelis Brünnlein, S 1385: O Herr, ich bin dein Knecht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8273851220321362e15b7539d59fcb6777d2c2e515033975937d6bd04e43388e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRZ149654010 — a six-check JSON result.
Israelis Brünnlein, S 1385: Freue dich des Weibes deiner Jugend
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959b116c353885d0fc484be46b4c818fd7b791a377c40dcc3496d16e3dc13c56. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/FRZ149654020 — a six-check JSON result.
Israelis Brünnlein, S 1385: Die mit Tränen säen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03728265b21c7a62b1ccebbe10af7feb3ffa9fa5a0e8dd5b74b1b9828dadc6e1. 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/FRZ149654030 — a six-check JSON result.
Israelis Brünnlein, S 1385: Ich lasse dich nicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c32fce3bdf6e636c956d67e37a5885eab4cef62a80409833e463e9f69e3108f. 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/FRZ149654040 — a six-check JSON result.
Israelis Brünnlein, S 1385: Dennoch bleibe ich stets an dir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc01e5423f535ab4d1c2e96620dcb21efb0e23818bb385232976239080575f88. 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/FRZ149654050 — a six-check JSON result.
Israelis Brünnlein, S 1385: VI. Wende dich, Herr, und sei mir gnädig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb4304534fcabd6d11f4cfcb8121be85643c020ecdb2f8bc6582ad5f98ed61. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/FRZ149654060 — a six-check JSON result.
Israelis Brünnlein, S 1385: Zion spricht: Der Herr hat mich verlassen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2136c9242047f65884ae062090862b6b8ec581b738571c9d354432760b52066. 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/FRZ149654070 — a six-check JSON result.
Israelis Brünnlein, S 1385: Da Jakob vollendet hatte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3240acf78f1c7bbaf0e3e50a51a27ab216d26b7c633bd8f2b10c7551c0a6fd8b. 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/FRZ149654080 — a six-check JSON result.
Israelis Brünnlein, S 1385: Lieblich und schöne sein ist nichts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298affe1603cf00299afd7a053b407210aed184b366ad7d58e34e348ebffdfab. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FRZ149654090 — a six-check JSON result.
Israelis Brünnlein, S 1385: Ich freue mich im Herren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c29f0bb9b4b0032ba0b9a3bed969353167a97bbeae5088d7c8c547c2d9bc36a. 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/FRZ149654120 — a six-check JSON result.
Israelis Brünnlein, S 1385: Ihr Heiligen, lobsinget dem Herren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364871d866e23da577b5cee75e643257f2018d497c81640c58dd58f72cbdff89. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ149654130 — a six-check JSON result.
Israelis Brünnlein, S 1385: Herr, laß meine Klage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0a55e58a42bbb92e5a7178170f0b75218332336e06cc4ca39926c6ff3a768a. 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/FRZ149654140 — a six-check JSON result.