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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcca068fd4e317867d0515c8cce3dac5bb92dbb4df5691756146bb0a1e1a584. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10ad2a12-cde2-4907-ac06-c3534f06fff0.json and https://artists.proofprofile.net/proofs/artist/10ad2a12-cde2-4907-ac06-c3534f06fff0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Freue dich, du Tochter Zion. Barockmusik zur Weihnachtszeit
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f75fa1354080585a9293ee25782023cc6b5eaacbd29cb8ab71aa4c9149232f4. 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/DEB111303601.
J.S. Bach: Friede auf Erden. Rekonstruierte Kantaten BWV 197.1, 80.1, 190.1
Ehre sei Gott in der Höhe, BWV 197.1 (Reconstr. Dirksen): I. Coro. Ehre sei Gott in der Höhe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34975926c91bed3d764a41be9b7619b52938788eaeae5996638fea37c570e82f. 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/DEB112304501.
Ehre sei Gott in der Höhe, BWV 197.1 (Reconstr. Dirksen): III. Recitativo. O Liebe, der kein Lieben gleich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cb089315dcdc95562ba053a8b7fac0678fe64e3f567c739488222a79936596. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/DEB112304503.
Ehre sei Gott in der Höhe, BWV 197.1 (Reconstr. Dirksen): IV. Aria. O du angenehmer Schatz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7776cee824b4d6012d95ef1874ee73bb38713ecbc72330f63a988b27fccfe564. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEB112304504.
Ehre sei Gott in der Höhe, BWV 197.1 (Reconstr. Dirksen): V. Recitativo. Das Kind ist mein, und ich bin sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc95c44aa59dcd779da31fac770da1ceeff5225100e4614618a8ccfff4335d0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB112304505.
Ehre sei Gott in der Höhe, BWV 197.1 (Reconstr. Dirksen): VI. Aria. Ich lasse dich nicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb706be26da2bddac7652492bbc144c852213b3690a5450f904842759bb4e0eab. 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/DEB112304506.
Ehre sei Gott in der Höhe, BWV 197.1 (Reconstr. Dirksen): VII. Choral. Wohlan, so will ich mich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28477bc7ff665511e12806d12a31ee975772e8d46ef6a7fe898f69b8acbb8696. 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/DEB112304507.
Alles, was von Gott geboren, BWV 80.1 (Reconstr. Hofmann): I. Aria. Alles, was von Gott geboren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4616e5d71137ad8cecc9577488e0f7314ddcef539169b21ed467b822835e8996. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEB112304508.
Alles, was von Gott geboren, BWV 80.1 (Reconstr. Hofmann): II. Recitativo. Erwäge doch, Kind Gottes, die so große Liebe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd9604a7c18d8f13581e7c54b41d1d9c75a8e07ed43621cdb8748b8585282a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEB112304509.
Alles, was von Gott geboren, BWV 80.1 (Reconstr. Hofmann): III. Aria. Komm in mein Herzenshaus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31289365fb9b0a8ff315befb6b8c1cf312e795ca929e425f206f6d99a2b6d2a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEB112304510.
Alles, was von Gott geboren, BWV 80.1 (Reconstr. Hofmann): IV. Recitativo. So stehe dann bei Christi blutbefärbten Fahne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a069a9d582a35b633e74e87e142a310c55699ca129ae4bb50a32551e97501bb. 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/DEB112304511.
Alles, was von Gott geboren, BWV 80.1 (Reconstr. Hofmann): V. Duetto. Wie selig ist der Leib
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d9d80dfd4d0af88f4a090b541414a5ccfe05eaa761ac0911e86fa69da49a02. 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/DEB112304512.
Singet dem Herrn ein neues Lied, BWV 190.1 (Reconstr. Masaaki & Masato Suzuki): I. Chorus. Singet dem Herrn ein neues Lied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc9e8c4b75524fe9e4fccf11b0ba0aab092b564bbdff2b9809349832a9607ca. 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/DEB112304514.
Singet dem Herrn ein neues Lied, BWV 190.1 (Reconstr. Masaaki & Masato Suzuki): II. Choral e Recitativo. Herr Gott, dich loben wir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a835a432303c30385c29c525b9030a72e665d62659b7e36041b313c80d405d1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB112304515.
Singet dem Herrn ein neues Lied, BWV 190.1 (Reconstr. Masaaki & Masato Suzuki): III. Aria. Lobe, Zion, deinen Gott
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5e28ae4d2bab0a34e543de1d91f9d1c36e63aa35288d9c7ab74e6e27718da8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEB112304516.
Singet dem Herrn ein neues Lied, BWV 190.1 (Reconstr. Masaaki & Masato Suzuki): V. Aria. Jesus soll mein alles sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f64cd93fb99d39b043630765da247f5a86abfb9beaaeee5c398661d77753099. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB112304518.
Singet dem Herrn ein neues Lied, BWV 190.1 (Reconstr. Masaaki & Masato Suzuki): VII. Choral. Lass uns das Jahr vollbringen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41170a969cc4cee89a899c8168f3b15c515f15a5c69c67c30d8012da076ff55b. 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/DEB112304520.