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 0x184da9959f8cdd8fbd56140ef92935b4cf9b187bfa1616df5eb40e81f42121f4. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/215215e4-bfb8-43ed-b052-3b06307d32d2.json and https://artists.proofprofile.net/proofs/artist/215215e4-bfb8-43ed-b052-3b06307d32d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lohengrin, WWV 75, Act I: Hört, Grafen, Edle, Freie von Brabant! (Live)
Wagner: Lohengrin, WWV 75 (Recorded Live 2011)
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 0xe71355caf67367f865821af355c40032f506d0638550449b0589b85aaa6f92a7. 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/GB6CE1800169.
Lohengrin, WWV 75, Act I: Einsam in trüben Tagen hab' ich zu Gott gefleht (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaa90b9df692a9c6c1f2b490dcca4830cf35fa7c091fd44d0bf879ac8c31f5b. 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/GB6CE1800173.
Lohengrin, WWV 75, Act I: Wer hier in Gotteskampfe zu streiten kam - Gegrüsst, du gottgesandter Held! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0a3cd8e1e5b86f00f3c822df152c83951ce5de7c7068d6e7f2b3d68e40a97. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GB6CE1800176.
Lohengrin, WWV 75, Act I: Wenn ich im Kampfe für dich siege (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16587425b016748a63e077e12bb16f5ebedc4553c69c3eb22323aa939f67d9c7. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GB6CE1800179.
Lohengrin, WWV 75, Act I: Mein Herr und Gott, nun ruf ich dich (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb063005f224abdf76b8a472de1c482242ef56073a7c619ab5c20b393a5778ca4. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GB6CE1800182.
Lohengrin, WWV 75, Act II: In deiner Hand, in deiner Treu (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c05384c81dc9765fbad865597e783faf335d83efda9ee826abf1a677d320773. 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/GB6CE1800206.
Lohengrin, WWV 75, Act I: Durch Gottes Sieg ist jetzt dein Leben mein (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dac0dda527d01334b4272a0114e498d2da0a54459eb4eb505218150a7553cb2. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GB6CE1800183.
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
Lohengrin, WWV 75, Act I: Dank, König, dir, daß du zu richten kamst! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74efd37ed1c1c711754febaa3eebce5145eed522ab6ba9b60a83a4c889afaaa. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GB6CE1800170.
Lohengrin, WWV 75, Act I: Nun sei bedankt, mein lieber Schwan! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d919157c1b9ab6db89df7e022ae34bdacf9302f5e04816446f0c99f322336d5. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GB6CE1800177.
Lohengrin, WWV 75, Act I: Nun höret mich und achtet wohl (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a450611990a1b048159da6b9f3a11d20ffc3cb4a144367eeb40c43a5a4e3b89. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GB6CE1800181.
Lohengrin, WWV 75, Act III: Heil, König Heinrich! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb40b7a7b52fe66679d04200b63cb15c4a2a3dea82c25a316f964030aec259fc. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GB6CE1800217.
Lohengrin, WWV 75, Act I: Welch' fürchterliche Klage sprichst du aus! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ed070f8fddf88f296a8147131d3b0bb776e805069a49938babf16be7f5e4a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GB6CE1800171.
Lohengrin, WWV 75, Act I: Seht hin! Sie naht, die hart Beklagte! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4a8ea33a918ee8deee796edfd78f12958cdfa6b3e22e2994d7ab4289a992f6. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GB6CE1800172.
Lohengrin, WWV 75, Act I: Friedrich, du ehrenwerter Mann (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9dcaf3e4b8351fbac8b8ab078d3a75e07eec4dd693f2c4af5716ff6c596463. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GB6CE1800174.
Lohengrin, WWV 75, Act I: Des Ritters will ich wahren (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cf1557fa445b7ab971d59bdfb049de44e7a417cd6091ec15d07ed0d6ecf53b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GB6CE1800175.
Lohengrin, WWV 75, Act I: Nun hört! Euch, Volk und Edlen, mach' ich kund (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8712985f1800024bb5e4d885b4a97cd63e11033e6bec3b2d35e9a7d8006f30. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GB6CE1800180.
Lohengrin, WWV 75, Act III: Treulich geführt, ziehet dahin (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3aa955a48cb2941c0ecc63df3e318dc489075d9b6b989088326a08a21ee39f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GB6CE1800208.
Lohengrin, WWV 75, Act II: Im Früh'n versammelt uns der Ruf (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94535fa48d206d38224449dbd6a2d62f26636910a91dd0be35db9fd0815c92e9. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GB6CE1800197.
Lohengrin, WWV 75, Act II: Des Königs Wort und Will' tu' ich euch kund (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1656eb2091fb658141b9697276ea3d3192b4fabb0fe614342dc09d2b7ad4b15. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GB6CE1800198.
Lohengrin, WWV 75, Act II: Gesegnet soll sie schreiten (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08218284d998b06d45f5513c91ee3166311796e63a1bcb399ff25d295dfa06a5. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GB6CE1800200.