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 0xab6e026955c47175c5d8b3fcfb4fe41dbb4f3e13508344f43303507deb82dc2f. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/712cbc91-ae38-4655-baa6-431e51bf7c48.json and https://artists.proofprofile.net/proofs/artist/712cbc91-ae38-4655-baa6-431e51bf7c48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Horn Concerto in E-Flat Major: I. Con discrezione
Carl Philipp Emanuel Bach Chamber Orchestra
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 0xf0b96c8362db72b524c40b203325c9dcab5da3e637faab922e8e385421cabad2. 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/NLY331701517.
Heinrich Schütz: Geistliche Chor-Music 1648 (Complete Recording Vol. 1)
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. 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. 22, Unser Wandel ist im Himmel, SWV 390
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2220c95e389af8db138c7d5712d929fcb20b7b9843ba319e5631814ed5cf86ac. 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/DEB110702204.
Geistliche Chormusik, Op. 11: No. 4, Verleih uns Frieden genädiglich, SWV 372
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. 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. 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.
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. 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. 24, Was mein Gott will, das g'scheh allzeit, SWV 392
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b5c5c5d4fde1e54670b638bc6f98ba8340182e4b33e76b7376f042149712a. 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/DEB110702206.
Geistliche Chormusik, Op. 11: No. 25, Ich weiß, daß mein Erlöser lebt, SWV 393
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7350e4dd686ad132b453b1043c75c7a75cdc98241069c891b6fa8c1bbb8b21. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEB110702207.
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. 26, Sehet an den Feigenbaum, SWV 394
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47636ec83afb381112e0612fd76c5d5390dc829ac3c7736c190f3659767f83d. 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/DEB110702208.
Geistliche Chormusik, Op. 11: No. 28, Auf dem Gebirge hat man ein Geschrei gehöret, SWV 396
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52185ba0f1855720dfcc35911d46a3192d1df6b752a3b24520fbe835c86687a8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110702210.
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. 29, Du Schalksknecht, SWV 397
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4164514e364a47432a927c54e0cd4ca97138cfdcc8a99b20243489c72bfd9f3. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEB110702211.
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.
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.
Heinrich Schütz: Die Gesamteinspielung (Vol.1-8)
Italian Madrigals, Op. 1: No. 11, Quella damma son io, SWV 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0542d527bb7e7f501ef4d200add4b349fa77113c005aac0b400f0149b57367. 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/DEB111100811.
Denn er hat seinen Engeln befohlen über dir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8869185a7140b8f6f23ddca53c9290598a3cb1c86fb26b5f81671f6060c84ba4. 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/DES380002646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1133a9057b4e53df94bcd28e8df13c350bf4365b96857c60e6ada4119d374be8. 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/DES380002653.
Die schönsten Weihnachtslieder (weihnachtliche Knabenchöre)
Geistliche Chormusik, Op. 11: No. 12, Also hat Gott die Welt geliebt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be489dcf890a84878fb5676acb2f955ef03f0ec82666200f8f54793a470f333. 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/DES380020176.
Stimmige Fest und Zeit-Andachten: Sei willkommen, Jesulein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e90403bd68f2e96888be4c545505eb3ce8bb102bd7b874eacaa1a21bfcc94c. 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/DES380908011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceb773d67b2239b67c5889bd0d4688cdc7da582bca32bab76c4d2895ff4d13d. 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/DES380507021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf98af956a30ce9ba531c2c21511fa0e18606e8c3e564c58f2bfce5ed59e2087. 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/DES380908004.
Vom Himmel hoch: Die schönsten Weihnachtslieder
Kreuzchorvespern (Uns ist ein Kind geboren)
Jauchzet dem Herren alle Welt: Schutz und die Italiener
Ich hebe meine Augen auf SWV 31, aus »Psalmen Davids«
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913bf4c72a438afb39a6d64c7e82d61391c2b52aa68ac5366454a7bde506a5fb. 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/DEAC61001002.