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 0xa68854a9a6abf66703452728c0060a0bc0622cf6508c1fee24fad0e85c3be9f5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7393f12c-4844-47cd-a3b8-deff9d6fc3b0.json and https://artists.proofprofile.net/proofs/artist/7393f12c-4844-47cd-a3b8-deff9d6fc3b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Psalmen Davids: XIV. Alleluja! Lobet den Herren, swv 38
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 0x04db08e192fc17d269721f5dad8c7ac850dbe63fdae545dd42fefef28dd03cba. 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/FRZ149767010.
Psalmen Davids: XVI. Lobe den Herren, meine Seele, swv 39
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a4d49fa07c5d4afab334603735be246139ac95bbfebc4121cdb5895d3c461e. 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/FRZ149767030.
Psalmen Davids: I. Zion spricht: der Herr hat mich verlassen, swv 46
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375f378dd2a4798c7530c88db59204cbc3fec8d1bbf08f1dda26bcc8bf8663c9. 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/FRZ149766010.
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: II. Ach Herr, straf mich nicht in deinem Zorn, swv 24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac49d217b1c843602763c588c643351e1d69ba8bd79dff1d716fa3ca0815c5. 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/FRZ149766020.
Psalmen Davids: III. Ich freue mich des, das mir geredt ist, swv 26
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410296d75df46f3a5adc00ba006b41dd3a96bc916db694831611f3fd2e0ee77c. 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/FRZ149766030.
Psalmen Davids: IV. Wie lieblich sind deine Wohnungen, swv 29
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f6db347afa65fbfeeb121d790f67be0ca51cb06351d86e39f288b27092041e. 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/FRZ149766040.
Psalmen Davids: VI. An den Wassern zu Babel sassen wir, swv 37
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026b577e19ed791cd7cb50edc23becb322cf073ae43402125817f020823a59b5. 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/FRZ149766060.
Psalmen Davids: VII. Der Herr ist mein Hirt, swv 33
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa319fc32773d531b4ea9294f8998e335713197c0bd9bb9be815273f5a9b38be3. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/FRZ149766070.
Psalmen Davids: IX. Die mit Tränen säen, swv 42
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8db4c5b8e2403acc0e891c8cd5bd164aa07145d4fd570630e381b75c9cff1f. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRZ149766090.
Psalmen Davids: X. Jauchzet dem Herren, alle Welt, swv 47
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ae607ebc43530036647b098aec2abb754ff9b21516cb081a184c76274e98c1. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRZ149766100.
Psalmen Davids: XII. Jauchzet dem Herrn, alle Welt, swv 36
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e702a5a33fa8657744547b1ed1b98fe73f87a07442b4a9886a50af6f0abb118. 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/FRZ149766120.