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 0x0aaab984c6a14fca2e54b5cde01d68a24f189e343fc582c852b03c87b3a122de. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ea016d8-096d-49f3-ac2b-e0813df97770.json and https://artists.proofprofile.net/proofs/artist/7ea016d8-096d-49f3-ac2b-e0813df97770.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Glaubenslieder: Neue Kantaten zum Kirchenjahr
Neubrandenburg Concerto No. 1: I. Vivace (Transcr. By Harer, after Bach's Christmas Oratorio, BWV 248: Opening chorus of the fifth Cantata)
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 0x54a3174dc5711b546429ccc8985199e542a61c0ec4719e2ea3af743af0718361. 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/DEE219781601.
Neubrandenburg Concerto No. 1: II. Aria (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc2668870d8a8a55e2cf2e1aa4ebd1a96e64b90584744ba751cca0dbbde2e1. 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/DEE219781602.
Neubrandenburg Concerto No. 1: II. Aria - Variation 1 (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ae022700008d925af64eeed8202b62c4e5754dd9690754de7eb4112dc6df5. 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/DEE219781603.
Neubrandenburg Concerto No. 1: II. Aria - Variation 2 (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377b13e23432d1bd4d116637fa5424e0a4fd12a83664c52d475938b0329a7e6. 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/DEE219781604.
Neubrandenburg Concerto No. 1: II. Aria - Variation 3. Più Allegro (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1c60512631f052e63b8f25e8dec253a6048dd6e9bc01cb10e4465aa86ca288. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEE219781605.
Neubrandenburg Concerto No. 1: II. Aria - Variation 4 (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4cbf5780aed12fbfa031fe36b4d86e9626be5ea2bb3232816509c96bf280f5. 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/DEE219781606.
Neubrandenburg Concerto No. 3: II. Adagio ma non tanto e Dolce (Transcr. By Harer, after Bach's Triple Concerto, BWV 1044 and Organ Trio Sonata, BWV 527)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7177f8aba07f89020675fdd644a938962f09f3695bdc0e1982a579117b2b8428. 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/DEE219781617.
Neubrandenburg Concerto No. 1: II. Aria - Variation 7 (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db8996929b18229a099627dfd015a8ec7d40f75707412af24347af49a156271. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:46:50Z), 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/DEE219781609.
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
Neubrandenburg Concerto No. 1: II. Aria - Variation 5 (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fde0c873ef0d232a1bd9f03e0b52373d842230a8e2942fcb075372d2cd85ae. 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/DEE219781607.
Neubrandenburg Concerto No. 1: II. Aria - Variation 6 (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c75e4c7091c76f25f807e28fd2debcf9cf48130e6d1d567ee34fb01b4020a3. 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/DEE219781608.
Neubrandenburg Concerto No. 1: II. Aria - Variation 8. Tempo Primo (Transcr. By Harer, after Bach's Aria variata alla maniera italiana BWV 989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29bc9b8c773c72aed99947575531598064c437e3b2c23473a26188806d540b6. 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/DEE219781610.
Neubrandenburg Concerto No. 1: IV. Presto (Transcr. By Harer, after Bach's Italian Concerto in F Major, BWV 971)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b57d3072fe726b401427eb712e634cd8b659f19c5029e33c444dcd212f42f4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEE219781612.
Neubrandenburg Concerto No. 2 after BWV 1064: II. Adagio (Transcr. By Harer, after Bach's Concerto for Three Harpsichords, Strings, and Basso Continuo in C Major, BWV 1064)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f582e6c1a1683f3cd93e219191ba57c95f4cee36ac51d1e0c6debb6e89c91f2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEE219781614.
Neubrandenburg Concerto No. 3: I. Allegro (Transcr. By Harer, after Bach's Sonata for Viola da Gamba and Harpsichord, BWV 1029)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a850a54ec83adc487bd84d8db799f786b65790b1267f7be722815063a9a1385. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEE219781616.
Neubrandenburg Concerto No. 3: III. Gavotte I - Gavotte II (Transcr. By Harer, after Bach's English Suite for Harpsichord, BWV 808)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daecd506d6028883983c043c2988390bd667e44fca846c04985f3ca7f3b6db5. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEE219781618.
Neubrandenburg Concerto No. 3: IV. Aria (Transcr. By Harer, after Bach's "Gedenke doch, mein Geist, zurücke" BWV 509)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dda2de7ba4b4cb4d1706493ce356ad5ff13185136f9ca68cb2694b4a6d7ab8. 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/DEE219781619.
Neubrandenburg Concerto No. 3: V. Allegro (Transcr. By Harer, after Bach's Overture in the French Style for Harpsichord, BWV 831)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72662435ffefde6282017e38d578552d93d396fa2c40909fe6bd3aacaf397ac4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEE219781620.