Brian Jagde (born 1979) is an American operatic tenor. He has performed roles at leading opera houses throughout the world, including the San Francisco Opera, the Metropolitan Opera, the Royal Opera H
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 0x8b85189cb2cb19bb169181be9c55abcb48262f3bb0a6ab738131f36e9ae31b8a. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3e5ecb9-7785-48ec-959d-974f78a1f12c.json and https://artists.proofprofile.net/proofs/artist/e3e5ecb9-7785-48ec-959d-974f78a1f12c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe8b4bcbec4f8e3f63b90ff87f1ddee78a3d049a18689830ee821b02a6675cf79. 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/NLE421902401.
Il Tabarro, SC 85: Ballo con la padrona!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96148a7d80b4d1888a77832be43f96f46ea78bde731b1e1a8d01d10bb83801d8. 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/NLE421902404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ac158ed8df530affd45081415fdfeb4f98f0c081caf0bea537c4cea6ecdf1b. 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/NLE421902405.
Il Tabarro, SC 85: Conta ad ore le giornate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd56ea42346dfa68622aaffd106f1eb93843f8e9b34e3dd6641e2612ce08f92. 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/NLE421902406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315aa136c62915578ce398306e76bc0b8ece80dc88d34f4e23f9c35015b16e30. 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/NLE421902409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57286858c97ec2906a682b8bb6fd4f320219cca2f221d8f3dfcd67b0990af2e. 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/NLE421902412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa695bedc1f0924e81b73b3959aa1abe76bf7335a4b2e43c013a3a0f24e78761b. 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/NLE421902417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e953cba8dba762824382090c078255b8d679699a6809d236b8c2fc8d16d24e. 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/NLE421902419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2b62b0267d98fb067d0af71f754b91e1f5a546882de20c171bbf458050787c. 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/NLE421902420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5900ad2afb1c4fd813362bf13a30f473fb623e7d5c89efe3a93b64fa4e629e0b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLE421902403.
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
Il Tabarro, SC 85: To'! guarda la mia vecchia!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa775131f18cf7c471279299d931071e375c9e6758e6437d8bdf2704af8226. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLE421902407.
Il Tabarro, SC 85: Hai ben raggione; meglio non pensare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54761c0b2b0f0e004159fe4e59e07ad0705abec726f32375bef984b45d39f061. 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/NLE421902408.
Il Tabarro, SC 85: Belleville è il suolo e il nostro mondo!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd87d7e4ee22119c4868ba2538ab126a639a4dc0612aa6bd9689ab5bd75bcc8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLE421902410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193f95d7f230952661dd639b01a9f7e7e7996b823d2795bdf95d9e2330cf6fef. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLE421902411.
Il Tabarro, SC 85: Come? Non sei andato?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1019e9acb79832e846ef0698621a4840bcb27cca79a74f34d3164d74045edf7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLE421902413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a64b58ec77844269f9d48648a10ad09986f898eb14f4f355d14a9ff5fcb158. 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/NLE421902414.