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 0xe9f0a3b8a56337fbd30da7701657092b0da862db50480ad305875bb3c5fb4b04. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c66baa4-e754-4adf-9ec5-fded0a3ec2c3.json and https://artists.proofprofile.net/proofs/artist/2c66baa4-e754-4adf-9ec5-fded0a3ec2c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paulus Oratorio, Op. 36, 1ère partie: Choeur Herr, der du bist der Gott
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 0xfc0ab4be49e39326058595cc6310764ecd77e10f9f67e602a8ed7e465271e1fc. 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/FRZ178500420.
Paulus Oratorio, Op. 36, 1ère partie: Aria Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6affb744e6fc6b10368593c601405855d256da4a8145a6deb1b51033e66372. 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/FRZ178500470.
Paulus Oratorio, Op. 36, 1ère partie: Choeur Siehe, wir preisen sellig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e36cc36a551ca9634cedc21949e047d59886293cb0315331091ac1008f8bd81. 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/FRZ178500510.
Paulus Oratorio, Op. 36, 1ère partie: Récit Und zog mit einer schaar - Arioso Doch der herr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8de198763d6da8f3be71b276495d0cd21495b6c3c7cdfaf890a5e5ed0a68521. 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/FRZ178500530.
Paulus Oratorio, Op. 36, 1ère partie: Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dace9b96724d414f728197d6c6e0869387370e2065ed7cf903101eadde0078c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRZ178500410.
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
Paulus Oratorio, Op. 36, 1ère partie: Chorale Allein Gott in der hoh' sei ehr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f358e8a443ea999eeba532be3507af91ee3562c6ee2a8007dfcfdb5e60f707c. 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/FRZ178500430.
Paulus Oratorio, Op. 36, 1ère partie: Récit Die menge der glaubigen - Wir haben ihn gehort
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42b7a327999653efb0b82711caff56ac40a03d19804eb7fcad8466c37a3e38d. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/FRZ178500440.
Paulus Oratorio, Op. 36, 1ère partie: Choeur Dieser mensch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd720268cc899d85c0d542bd6e1edae5363e17f0f43245a5d81acf60111f1b1d. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FRZ178500450.
Paulus Oratorio, Op. 36, 1ère partie: Racit Und sie sahen auf ihn - Choeur Weg, weg mit dem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4cdda26e360638fdadee59a5ad63f763665577ec270ced9a239cea4d3277f. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/FRZ178500460.
Paulus Oratorio, Op. 36, 1ère partie: Récit Sie aber sturmten auf ihn ein - Choeur Steiniget ihn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d1603a9c546428a179d1aec3422ab8e17736faabbdb0f528c117edadcf3572. 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/FRZ178500480.
Paulus Oratorio, Op. 36, 1ère partie: Récit Saulus aber zertsorte die gemeinde - Aria vertilge sie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4309ad6500b88140346c097c42ca329328a72f7738f7759250ac2c375aec28. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRZ178500520.
Paulus Oratorio, Op. 36, 1ère partie: Choeur Mache ich auf, werde licht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafda7dc388c30eac5e2c2cc7c421b9b791f4068790a5131d9926bb0a2f6f6e98. 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/FRZ178500550.
Paulus Oratorio, Op. 36, 1ère partie: Récit Die manner aber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7e83cbe1e588866ba23f5d6daf1350ab72b54401fa69ca9015464523d4a35e. 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/FRZ178500570.
Paulus Oratorio, Op. 36, 1ère partie: Air de basse Gott sei mir gnadig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9114dbd434ad862dd9274b7fb9678c6848e492fe26b888c5b1ecb991851096db. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRZ178500580.
Paulus Oratorio, Op. 36, 1ère partie: Récit Es war aber ein junger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0def4b3a5c9112798a0c84b4129656b65e6c6a2b5d192a43e5faf0e7a43335bf. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FRZ178500590.
Paulus Oratorio, Op. 36, 1ère partie: Air de basse Ich danke dir - Choeur Der herr wird die tranen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3408b374db487e260956d761b35561e951dd3c79a586600e9fbc0e2c9a94c968. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FRZ178500600.