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 0xc79a2dbd277fbc953762495b289154ed5532183a97c5b5c2e24ae279d81f1171. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/383e93ba-f392-4c3a-b8c8-3d9c846c1f0c.json and https://artists.proofprofile.net/proofs/artist/383e93ba-f392-4c3a-b8c8-3d9c846c1f0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Psalmen Davids, Op. 2: No. 2, Warum toben die Heiden, SWV 23 "Psalm 2"
Heinrich Schütz: Psalmen Davids (Complete Recording Vol. 8)
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 0xa45380f694a1c554cd5254b1eb8fc35256f26ad848726967fc51a78db62f4f3b. 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/DEB111301602.
Psalmen Davids, Op. 2: No. 6, Herr, unser Herrscher, SWV 27 "Psalm 8"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244718e1f76d13517c36c87eeaef360255bd7429504cdd441409ffd2176200fc. 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/DEB111301606.
Psalmen Davids, Op. 2: No. 4, Aus der Tiefe rufe ich, SWV 25 "Psalm 130"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5adb3bf370e7be766e7ab32c27e573a8af7d72dc26c438cd0513b93cb72330. 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/DEB111301604.
Matthäus-Passion, SWV 479: II. Letzte Leidensankündigung
Schütz: Matthäus-Passion (Complete Recording Vol. 11)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8125cd942bdd0359fbb65695d0cb49f10aa803daf81dcfee9d68b7543247c4ae. 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/DEB111500105.
Matthäus-Passion, SWV 479: VI. Ankündigung der Verleugnung des Petrus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69ba081325891bdf69c197d1b75ce5da24f0d5b06d0186ec58fde805466c2db. 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/DEB111500109.
Matthäus-Passion, SWV 479: VIII. Jesu Gefangennahme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308906b6ca6258dbd1b105871ed55aae1e46436da0fde782d4d91e0a5a527179. 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/DEB111500111.
Matthäus-Passion, SWV 479: XIII. Kreuzigung und Tod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8433885a96e59625a6fb60bb58bc8d9fd482b73d93e77df53dd26820763c23. 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/DEB111500116.
Psalmen Davids, Op. 2: No. 1, Der Herr sprach zu meinem Herren, SWV 22 "Psalm 110"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb30e54ee959a1ba91e55e221000263db5f0f8636e30806d6d752e485cf02fb. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEB111301601.
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
Psalmen Davids, Op. 2: No. 8, Wie lieblich sind deine Wohnungen, SWV 29 "Psalm 84"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5352e965758f7bf70e1b10454c075deeb2ef4b7607b39ac56b1c20632e002b7b. 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/DEB111301608.
Geistliche Chormusik, Op. 11: No. 29, Du Schalksknecht, SWV 397
Heinrich Schütz: Geistliche Chor-Music 1648 (Complete Recording Vol. 1)
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.
Psalmen Davids, Op. 2: No. 3, Ach, Herr, straf mich nicht, SWV 24 "Psalm 6"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa0783a4e22442ca83ac36b7a43a31141ee9ed004a6d2f2760b22d773660fcc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEB111301603.
Matthäus-Passion, SWV 479: III. Salbung in Bethanien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bd8e17a6ce10764a8a1f035813b9b7548fa05601411d86ad0d5872a8254fcf. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEB111500106.
Matthäus-Passion, SWV 479: V. Das heilige Abendmahl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad07a15e64a96e8e3f1594f6cf867b58308fc572453eeef120c28fe66362150. 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/DEB111500108.
Matthäus-Passion, SWV 479: VII. Jesus in Gethsemane
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0d28aac63e9a11d6536d659a7b8d23b2954a133e197186e182d6fbcf622001. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEB111500110.
Matthäus-Passion, SWV 479: IX. Jesus vor dem hohen Rat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a96d6b0a1cb0a07c137e68c10e001b2ccffc0476e8ed5c120f422e1d5282f0. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEB111500112.
Matthäus-Passion, SWV 479: XI. Jesus vor Pilatus - Ende des Judas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c8834267d704cbf3b31ed90ded8d8897561d5b6ac7d5adf375b196cadfc1e9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEB111500114.
Italian Madrigals, Op. 1: No. 1, O primavera, SWV 1
Heinrich Schütz: Die Gesamteinspielung (Vol.1-8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6597cdba4c49f0d112e867f9690aea41e79cf523fe8a70dbf0acdd21b8cecdc3. 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/DEB111100801.
Italian Madrigals, Op. 1: No. 2, O dolcezze amarissime, SWV 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daedb85b47ba66215646f8cefd64cb109068e496b5968ebb877f610b1c1b48c. 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/DEB111100802.