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 0x745301bb01a9436ccc412d36228a71d6dc63d5c40b637611f58730fe17fd3e2c. 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/660bd705-a5c6-4770-ad14-1d006d958791.json and https://artists.proofprofile.net/proofs/artist/660bd705-a5c6-4770-ad14-1d006d958791.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geistliche Chormusik, Op. 11: No. 8, Sammelt zuvor das Unkraut, SWV 376
Heinrich Schütz: Geistliche Chor-Music 1648 (Complete Recording Vol. 1)
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 0x2bb57ed2fcc2b1a267c53a50b62c6376757e1de8578ba3762f6c48878b20543c. 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/DEB110702108.
Geistliche Chormusik, Op. 11: No. 13, O lieber Herre Gott, wecke uns auf, SWV 381
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712e5fa28915c7cffde1f5422c5ad36c679ae24e98eaf60248140119f979adf4. 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/DEB110702113.
Psalmen Davids, Op. 2: No. 6, Herr, unser Herrscher, SWV 27 "Psalm 8"
Heinrich Schütz: Psalmen Davids (Complete Recording Vol. 8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244718e1f76d13517c36c87eeaef360255bd7429504cdd441409ffd2176200fc. 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/DEB111301606.
Schütz: Weihnachtshistorie (Complete Recording Vol. 10)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab70147e5404b27eec0611833cdfa45d83af48d08a253b581107ec78ef468b93. 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/DEB111404502.
Psalmen Davids, Op. 2: No. 5, Ich freu mich des, das mir geredet ist, SWV 26 "Psalm 122"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f44dc2ee8819f738018403bb37d82b09f893fefce1c36993dbad533fcd4a51. 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/DEB111301605.
Psalmen Davids, Op. 2: No. 7, Wohl dem, der nicht wandelt im Rat der Gottlosen, SWV 28 "Psalm 1"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e94efd606706fb47ecda6a565badbcc080dab237117ccc91f9b941e40e092b6. 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/DEB111301607.
Psalmen Davids, Op. 2: No. 9, Wohl dem, der den Herren fürchtet, SWV 30 "Psalm 128"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020fc68b05908a5fb8cbb9d159c5e7d71f477abfd71fbf5303989c09d40e28d5. 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/DEB111301609.
Psalmen Davids, Op. 2: No. 20, Nun lob, mein Seel, den Herren, SWV 41 "Psalm 115"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a65bf578614cfc0bf967fbb791ee52ce95743127950ffc1d7d37286685fba40. 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/DEB111301707.
Geistliche Chormusik, Op. 11: No. 12, Also hat Gott die Welt geliebt, SWV 380
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619f90d2766d1e6112ffe2b4f0b8ecbd1e059141145eb0c9f6716e963a3e35c. 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/DEB110702112.
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
Geistliche Chormusik, Op. 11: No. 11, So fahr ich hin zu Jesu Christ, SWV 379
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd332267fee6d20aed64322d22c5c5b65a68c6f52141b4b54974b845cf84359e4. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEB110702111.
Geistliche Chormusik, Op. 11: No. 23, Selig sind die Toten, SWV 391
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73a28b6e259f1d2b0fb093034f0af13ca37f491a75ed8e45f8e68c8a6997b2b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110702205.
Becker Psalter, Op. 5: No. 139, Aus tiefer Not schrei ich zu dir, SWV 235 "Psalm 130"
Schütz: Becker-Psalter, Op. 5 (Complete Recording Vol. 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0a74d8dddc44ec6b45e20d7babee776a880cc7dc62333a8114cfd55653f19. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEB111700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa19296470cb1ee014f5e4d28ed3263496dbf050d58ea2c4d42ef46a045ac41. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEB111404501.
Psalmen Davids, Op. 2: No. 24, Danket dem Herren, denn er ist freundlich, SWV 45 "Psalm 136"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18fdf5398ee40440d07ddce16d5c1699b72ffc53f982af32cea85691cdbd9e7. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEB111301711.
Weihnachtshistorie, SWV 435: V. Die Hirten auf dem Felde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0a82de87552377f1d30a357727a9a1f61a01bb78ebeff23278dc0f5ba7a8d. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEB111404510.
Psalmen Davids, Op. 2: No. 3, Ach, Herr, straf mich nicht, SWV 24 "Psalm 6"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa0783a4e22442ca83ac36b7a43a31141ee9ed004a6d2f2760b22d773660fcc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEB111301603.