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 0x8777eaeec1f2acba41b678e1314f35779be69e721449df056811a65a76d44fae. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df52af46-21df-4618-953e-c50ce97c5b09.json and https://artists.proofprofile.net/proofs/artist/df52af46-21df-4618-953e-c50ce97c5b09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xaab7aa0bf17453b031865743b4d02f2b91123fb6ea275ae70f777c843c6e08b7. 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/CH9212200051.
BWV 1003: Andante für Violine Solo - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04852f37b7cb2b3577a1a29fc3af54bdbfe394eef5f85ec8692c22e7ddf359b. 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/CH9212200053.
Eingangschor aus BWV 26: «Ach wie flüchtig, ach wie nichtig» - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da820007b09bdcb5a6e048c383970ada9d519e589fd962267548851c81f861b. 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/CH9212200058.
Choral für Tenor aus BWV 140: «Zion hört die Wächter singen» - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d7657ecc1245bdd7e888060225ac624f0ffd2884cf5be9319747ad81e25f34. 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/CH9212200068.
BWV 31: «So fahr ich hin zu Jesu Christ» Schlusschoral - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b348a8f653a69ad47b5324d6ac744db1dd251b2b2e6af249deadfae74c172e7. 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/CH9212200072.
Choral aus BWV 26: «Ach wie flüchtig, ach wie nichtig» - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ac4c11e5f36eb9df3b81762662034ce7757dd3ffde77df1163e115f9581e5. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/CH9212200052.
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
Arie für Bass aus BWV 166: «Wo gehest du hin» - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcc689548032581737884998bff055fbd7ecd0a988ee4098deacc03faf309fe. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH9212200055.
I. Orchestersuite BWV 1066: Forlane - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6c13c39647aa525a5fe56e56ef74d84b2313dbc814dc3b1b6f6a94cef924e4. 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/CH9212200060.
Schlusschoral aus der Johannespassion BWV 245: «Ach, Herr, laß dein lieb Engelein» - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7174c5e3c23bdc8965fbad9d72112562e10bb5848d27f4a1347b0cb9889bd386. 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/CH9212200070.
Cantata "Geist und Seele wird verwirret", BWV 35, Prima parte: No. 4. Aria, "Gott hat alles wohlgemacht!" (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef217d591fde1c7d957077faf79abd50d1100adae79c3b814b40a269309be41. 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/BEE022109204.
Cantata "Geist und Seele wird verwirret", BWV 35, Prima parte: No. 2. Aria, "Geist und Seele wird verwirret" (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe68d8f7f704ed7ae45c1a303beab7ba2c041f1f88768f36906bebcc7df5e351. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BEE022109202.
Cantata "Gott soll allein mein Herze haben", BWV 169: No. 7. Chorale, "Du süße Liebe, schenk uns deine Gunst" (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3547bbeb32dbe9439b977d2862bd376ad9dd4235bb12a7336e58a165e078e6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BEE022109217.
Dixit Dominus, HWV 232: I. Dixit Dominus
Handel: Dixit Dominus, Laudate pueri, Nisi Dominus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ffb59ff342e90311fcf0c793b95cfac4947226920c7813807d9e76cd54b9c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR7JM2373010.
Dixit Dominus, HWV 232: II. Virgam virtutis tuae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8f8dfe6ebad72e83ad640dd484973efa22c5d6ceb19a90499962ec03b5c72d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR7JM2373020.
Dixit Dominus, HWV 232: VI. Dominus a dextris tuis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcf8e960ecdc976455ed00a4e7014538d2a305a1d08de06d4568634f275a06f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR7JM2373060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2844e5cc5090879f0c41d1aab61e5a6da91ee626a9c3c5c6d395ed8dca5e3517. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR7JM2373100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89205098a96a5adb7fffff62b6c2d6df99a012b8b5fbbf5caa0c717cc785537. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR7JM2373120.