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 0x71d29446aa0dd2103abc90c2ac235c1a94dba9427be5f3e0784af17061d6b665. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d99ccaed-14da-4b6c-ba0b-677e56ca9e8b.json and https://artists.proofprofile.net/proofs/artist/d99ccaed-14da-4b6c-ba0b-677e56ca9e8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geistliche Chormusik, Op. 11: No. 4, Verleih uns Frieden genädiglich, SWV 372
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 0xb2303cc34af3f6ca6805272d20e738f80c5b63fb62dfb9c6f2be7c961979e818. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEB110702104.
Geistliche Chormusik, Op. 11: No. 1, Er wird das Zepter von Juda nicht entwendet haben,SVW 369
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9963ae8e65b78e6d4f0fb550012da1c8339905bd7134a7ed02336d555629281. 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/DEB110702101.
Geistliche Chormusik, Op. 11: No. 2, Er wird sein Kleid in Wein waschen, SWV 370
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a99b83fa2487614a1e6bc8bb3fb1200ad1d18542b9e0dfd488077bf8f0c9571. 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/DEB110702102.
Geistliche Chormusik, Op. 11: No. 8, Sammelt zuvor das Unkraut, SWV 376
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. 9, Herr, auf dich traue ich, SWV 377
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc3107a959451ec667e74470415faf838b81a8a6cd3a03e520392b987d56c63. 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/DEB110702109.
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.
Geistliche Chormusik, Op. 11: No. 19, Herzlich lieb hab ich dich, o Herr, SWV 387
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9151d2f3f7514b2889fbf114c80e035ad4cbc997018c7702273e5eb4d7462114. 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/DEB110702201.
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. 3, Es ist erschienen die heilsame Gnade Gottes allen Menschen, SWV 371
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f95e8d067ceddb6c7d02a9f8746267a16d14bcb9f0502426a2e1390fda1060d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110702103.
Geistliche Chormusik, Op. 11: No. 10, Die mit Tränen säen werden mit Freuden ernten, SWV 378
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c776cfe4b64d577f2a3cd4c80a72708695dbe27ac7bb1f64721e0fd3ae7366. 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/DEB110702110.
Geistliche Chormusik, Op. 11: No. 5, Gib unserm Fürsten und aller Obrigkeit, SWV 373
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b21560abe736424c445c9b883c49ca33ed3dbb090044c1153cf1a6580f506e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEB110702105.
Geistliche Chormusik, Op. 11: No. 6, Unser keiner lebet sich selber, SWV 374
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35ac79c779bcefbb939b42fcbab61c97f1c4a2c3c64e069960c0063cd4b53da. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEB110702106.
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. 14, Tröstet, tröstet mein Volk, SWV 382
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342286630ef7497fb412b4faf6c5310360a09d8cfc031654e1b8e06a77f901c6. 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/DEB110702114.
Geistliche Chormusik, Op. 11: No. 15, Ich bin eine rufende Stimme, SWV 383
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeb2210b65779812b4d7c6f75c41c98fc1d5429635c48bd0a9ce33375f96237. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEB110702115.
Geistliche Chormusik, Op. 11: No. 18, Die Himmel erzählen die Ehre Gottes, SWV 386
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21445a52cce8576e471d6a0a4df908d1072c03fdb8d895c088fbd19c72668a3e. 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/DEB110702118.
Geistliche Chormusik, Op. 11: No. 20, Das ist je gewißlich wahr, SWV 388
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175045985c7eb98050ac72de8708726f4f2cf2da79c186b83132cc4ce1a15a3c. 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/DEB110702202.
Geistliche Chormusik, Op. 11: No. 7, Viel werden kommen von Morgen und von Abend, SWV 375
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c90f8c738f3ac93a3d427ff48e09dd3612cf6c4a437df4e32575cdb8082fd8. 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/DEB110702107.
Geistliche Chormusik, Op. 11: No. 16, Ein Kind ist uns geboren, SWV 384
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97fda7574e4c4fb09333ed37c617ca3f3e5664baf48edbe9c332ac56efbb66c. 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/DEB110702116.
Geistliche Chormusik, Op. 11: No. 17, Das Wort ward Fleisch, SWV 385
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236e9e770b0e0ed35db72fc2c35600cf0f96c1a1326b106732055090a8d78fff. 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/DEB110702117.