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 0x7b02b64b7960f0341d0d17eb15b65b5aa00430c528971d8736951571bf423220. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/281a1d56-8977-41b6-a80d-05805e2310ce.json and https://artists.proofprofile.net/proofs/artist/281a1d56-8977-41b6-a80d-05805e2310ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Walkure: Act III Scene 1: Walkurenritt: Hojotoho! Heiaha! (Gerhilde, Helmwige, Waltraute, Schwertleite, Ortlinde, Siegrune, Grimgerde, Rossweisse)
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 0xa23fe76a5c18eed75cccd79042f19f014c1b7a3f96c296b439877b677659574a. 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/GB6CE0900089.
Gotterdammerung (Twilight of the Gods): Prologue: Einleitung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ce68f17074bbf8ad037c39388a228e2c320de8c8b466a7b471a08a455087ad. 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/GB6CE0900186.
Gotterdammerung (Twilight of the Gods): Prologue: Oh, heilige Gotter! (Brunnhilde, Siegfried)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa755cf1e3dae22373f844d5615034b710031fc4f3b3c17cbbd692067d8fb1d83. 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/GB6CE0900195.
Die Walkure: Act I Scene 1: Kuhlende Labung gab mir der Quell (Siegmund, Sieglinde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0155918c5fcfb71b2286825a9da84ad68058e73eac7de16a0d77236d38ccf69f. 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/GB6CE0900049.
Die Walkure: Act I Scene 3: Siegmund, den Walsung, siehst du, Weib! (Siegmund, Sieglinde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b8bda20da474d7e03257dc3bbd1d5b1b98332172f11290dcfb593f78a70148. 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/GB6CE0900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ce68f17074bbf8ad037c39388a228e2c320de8c8b466a7b471a08a455087ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB6CE0900186.
Die Walkure: Act I Scene 3: Schlafst du, Gast? (Sieglinde, Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cfcf01555b2994dc25fd6c6403886da238f5504149b3d506d270b861335aae. 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/GB6CE0900061.
Die Walkure: Act I Scene 3: Wintersturme wichen dem Wonnemond (Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9974492e8a678f6664631e31a09f7a6ca1343847b03f03c816e5d893685a73. 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/GB6CE0900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fd6ed77e0c19988948ef26db9ab3dbe7d72f30456c131a784e4d89374f0c08. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/GB6CE0900047.
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
Gotterdammerung (Twilight of the Gods): Prologue: Siegfrieds Rheinfahrt (Siegfried's Rhine Journey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb3869efb4f36740587eb27d56ccafae1db82aa4a49ab223b1d7c0c4df43cdd. 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/GB6CE0900196.
Die Walkure: Act I Scene 1: Wes Herd dies auch sei, hier muss ich rasten (Siegmund, Sieglinde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cac17c5c71fae88a8ef62b5594276fbe99b763dfcfe95a29a5f82c058396e3. 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/GB6CE0900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbb4c7f9c438cf55b3b4c0a8dc903e3a8e03d3579213adf2676202ed075f958. 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/GB6CE0900067.
Gotterdammerung (Twilight of the Gods): Prologue: Welch Licht leuchtet dort? (The Norns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2009e42ce3417b80e37248d54b5d0e1be8213c029a5513bc640587920d1700d2. 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/GB6CE0900187.
Die Walkure: Act I Scene 1: Des seimigen Metes sussen Trank (Sieglinde, Seigmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676a0c7f56a6d73f38ead614323f46acc4800a75e2220ed80905f46454350662. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GB6CE0900050.
Die Walkure: Act I Scene 1: Einen Unseligen labtest du (Siegmunde, Sieglinde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f1c876a940ccee30b2acba28375fb9255e49fcef024291628a18fa1556ef9. 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/GB6CE0900051.
Die Walkure: Act I Scene 2: Mud am Herd fand ich den Mann (Sieglinde, Hunding, Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3962d65a203112ac6941eb12fa39de35e9bda10f667f8bb201ef08fe35ab1668. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GB6CE0900052.
Die Walkure: Act I Scene 3: Walse! Wo ist dein Schwert? (Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab6432cdc3d8785a897b68f1bdba30e69b5e000db88cae284fc1acc13bbb6c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GB6CE0900060.
Die Walkure: Act I Scene 3: O susseste Wonne! Seligstes Weib! (Siegmund, Sieglinde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28f9345d16e767d331aeb89510837a6b6083a644c7c2c5c44f7625862ada21d. 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/GB6CE0900064.
Die Walkure: Act I Scene 3: Wehwalt heisst du furwahr? (Sieglinde, Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e3661ceb77a99e186ee93ae25fcd81f8b87b120b703861c02a180cb561d18a. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GB6CE0900065.