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 0x5bb4c6c3bb97dd32c1e2d61c9fcfa40776be55a4730afa7cea2259929209507e. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bdb6f28-7173-46d6-9653-39dfed95d181.json and https://artists.proofprofile.net/proofs/artist/0bdb6f28-7173-46d6-9653-39dfed95d181.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.
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.
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.
Die Walkure: Act I Scene 2: Die so leidig Los dir beschied (Hunding, Sieglinde, Siegmunde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbf4423019d571cd6fdb2460249ac7afce4acb8e50f95b50abff8789f184d76. 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/GB6CE0900056.
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
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.
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.
Die Walkure: Act II Scene 1: Nun zaume dein Ross, reisige Maid! (Wotan, Brunnhilde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db1ddb928ad85f9634b838ab35c4c069ca209d7cc89605e9b0b973b17c7c4c6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GB6CE0900068.
Die Walkure: Act I Scene 2: Friedmund darf ich nicht heissen (Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc7567e3bfa460ce3fd3058ca84a0a4a60895a6c27f5d3c3417a7c63a24bb7c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GB6CE0900053.
Die Walkure: Act I Scene 2: Wunder und wilde Mare kundest du, kuhner Gast (Hunding, Sieglinde, Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f96250e6c491f181618ab88d595291a4df144fcc923434a071da4baddf8869. 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/GB6CE0900054.
Die Walkure: Act I Scene 1: Aus dem Wald trieb es mich fort (Siegmund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa41417e25113be9987888f45bc95339d593302a86c0279a852ec17fa83f1637. 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/GB6CE0900055.
Die Walkure: Act I Scene 2: Ich weiss ein wildes Geschlecht (Hunding)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aeb4db53efcb588feb08dfadd54df1c7b3a3ec0e00e382fe43d1516b46f7bf. 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/GB6CE0900057.