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 0x7b55ef0c0a4b49a3a1a96baf75725fc5e675a757ce56adfe3ab7b764f5f5221c. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc196175-20c9-4fc2-b874-d928d1eed8de.json and https://artists.proofprofile.net/proofs/artist/fc196175-20c9-4fc2-b874-d928d1eed8de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Osterdialog, SWV 443 "Weib, was weinest du"
Schütz: Complete Recording, Vol. 20 — Psalmen & Friedensmusiken
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 0x55210405863eba6b3a8b8df8f53d6033122f8e558687fc8bf3684cb970b37a05. 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/DEB111903708.
Psalmen Davids, Op. 2: No. 2, Warum toben die Heiden, SWV 23 "Psalm 2"
Heinrich Schütz: Psalmen Davids (Complete Recording Vol. 8)
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.
Psalmen Davids, Op. 2: No. 5, Ich freu mich des, das mir geredet ist, SWV 26 "Psalm 122"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f44dc2ee8819f738018403bb37d82b09f893fefce1c36993dbad533fcd4a51. 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/DEB111301605.
Psalmen Davids, Op. 2: No. 7, Wohl dem, der nicht wandelt im Rat der Gottlosen, SWV 28 "Psalm 1"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e94efd606706fb47ecda6a565badbcc080dab237117ccc91f9b941e40e092b6. 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/DEB111301607.
Psalmen Davids, Op. 2: No. 9, Wohl dem, der den Herren fürchtet, SWV 30 "Psalm 128"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020fc68b05908a5fb8cbb9d159c5e7d71f477abfd71fbf5303989c09d40e28d5. 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/DEB111301609.
Psalmen Davids, Op. 2: No. 20, Nun lob, mein Seel, den Herren, SWV 41 "Psalm 115"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a65bf578614cfc0bf967fbb791ee52ce95743127950ffc1d7d37286685fba40. 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/DEB111301707.
Becker Psalter, Op. 5: No. 139, Aus tiefer Not schrei ich zu dir, SWV 235 "Psalm 130"
Schütz: Becker-Psalter, Op. 5 (Complete Recording Vol. 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0a74d8dddc44ec6b45e20d7babee776a880cc7dc62333a8114cfd55653f19. 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/DEB111700404.
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. 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.
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.
Psalmen Davids, Op. 2: No. 17, Alleluja! Lobet den Herren, SWV 38 "Psalm 150"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffab217256b0927943907d4a3a388cb51bd3239caee5644291960f755b5b893e. 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/DEB111301704.
Psalmen Davids, Op. 2: No. 24, Danket dem Herren, denn er ist freundlich, SWV 45 "Psalm 136"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18fdf5398ee40440d07ddce16d5c1699b72ffc53f982af32cea85691cdbd9e7. 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/DEB111301711.
Becker Psalter, Op. 5: No. 2, Was haben doch die Leut im Sinn, SWV 098 "Psalm 2"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a30a78f164960507ed4149ef762bc374860e70f18e0b0c2d14ce5ecac0909d. 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/DEB111700402.
Psalmen Davids, Op. 2: No. 11, Danket dem Herren, denn er ist freundlich, SWV 32 "Psalm 136"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec03396b2207f41e1dced445196e6c988b1a0ed6b5ce352cb6b409e2bb9bbeb. 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/DEB111301611.
Psalmen Davids, Op. 2: No. 15, Jauchzet dem Herren, alle Welt, SWV 36 "Psalm 100"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5915b62f28e5dfe0044b12b578d3b073cd8737e2fd6e2903a76594675206c990. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEB111301702.