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 0x233b8963daaddca351ddce72456e8ea078167915d1a5c7da63756888e385a97d. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d7c25bd-a0a1-4c3b-a55c-b9a509cd5fa3.json and https://artists.proofprofile.net/proofs/artist/9d7c25bd-a0a1-4c3b-a55c-b9a509cd5fa3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Georg Österreich's Resurrected Treasures
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 0x3de2139196b812c4b3980ee19ad4348b2a24ad51c367e3aa9336be53a105f3d0. 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/NLQ662481901.
Gott sei mir gnädig: IX. Tutti - Tröste mich wieder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0bfc5d04ebf6ef6b24ebdf942bfd250f5fe552c883f9a0b5a5ac8ff0d44939. 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/NLQ662481909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb9a80b9a7227047fcc47097d763addbd5aab1aeaf088343063702d1ed802ca. 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/NLQ662481910.
Me miserum!: VII. Aria - Una guttula cruoris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df647a8d1858f88beb801eef8f4c895226bd01456f667b67b0dee754657fcdc. 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/NLQ662481916.
Gott sei mir gnädig: V. Basso Solo - Siehe ich bin aus sündigen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6473fcc4c45c6ea1080863facb856e247f6dcf3c02f2145c27fc6157d1667ecf. 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/NLQ662481905.
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
Gott sei mir gnädig: VI. Tenor Solo - Entsündige mich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e9a9fec9310af0c247556d06364e111e1b53f44b25a53652981bfb4c061d8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLQ662481906.
Gott sei mir gnädig: VIII. Alto Solo - Schaffe in mir, Gott
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c37db78c0196471ceb1db9329a4702ec0a1f15ac1c13344f73bf1834024b6dc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLQ662481908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3e3d97b0a93d560db493c122af3be870dd110262069e0ead5d6fc1186443d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLQ662481911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccecc0d9653ca6d74281a64c7d50e19798c01c9b92c9bcdb3589f12a60764ca0. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/NLQ662481912.
Me miserum!: IV. Recit - Ut dirus peccatorum anguis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aea03269e5e3d004bb812deca04d4dfddbfa2e1e64b39a30dca6eff6875b5d5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLQ662481913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb362a6fe8716fbbd1abfdb67aa7d7491f8b82445e30ae91424d46ff18f6f2f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLQ662481914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c71b4ac11e145176a3c9f69d0d1a07db893c38567f4fe1c925bb3bd1c2a9bf. 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/NLQ662481915.
Me miserum!: VIII. Recit - Mi Jesu, tibi felix anima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045d6021f28cdfa7c614d3d7792d68a3ade2e68b3132d5572c3c06d084a7e284. 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/NLQ662481917.
Me miserum!: IX. Aria - Jesus esto vitae scopus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578c4964a560594975dcb269f1a230884860cf1c6c959bbd3476808cf6501159. 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/NLQ662481918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f3721509cf948623c4c7cbed58156c94a87149ce2fad89040e93d2f2ac6ec. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLQ662481919.
Vater unser: II. Tutti & Soli - Vater unser
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c062bb037b4fc60659447b6e29d7abb505d0ea8dfa610fcde5a963baf0298b2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLQ662481920.