Portland Baroque Orchestra (PBO) is an orchestra based in Portland, which is dedicated to historically informed performance of Baroque, Classical and early Romantic music on original instruments. It w
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 0x2a675518a00362ea38b153f5ac31c84643ca541be2cf6004179656fbafdc736e. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daf3bdd3-c849-402d-98d7-758b368f40f1.json and https://artists.proofprofile.net/proofs/artist/daf3bdd3-c849-402d-98d7-758b368f40f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saint John Passion, BWV 245, Pt. I: "Jesus ging mit seinen Jüngern" (Evangelist, Jesus, Chorus)
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 0xb4aba5b93f1a4d41341d5d1b7c6812bd0b9cf1085a1f20b7842bac592ae759bb. 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/GBELX1104168.
Saint John Passion, BWV 245, Pt. I: "O große Lieb" (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0939c4e72b26059a65a7460359514eced781dcb3390c91e0b90a095c65356bd. 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/GBELX1104169.
Saint John Passion, BWV 245, Pt. I: "Auf daß das Wort erfüllet würde...." (Evangelist)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70742c7a04ee3a7c49104caf0f315ec80eb3361178ab0b0f600db6472c29fb89. 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/GBELX1104170.
Saint John Passion, BWV 245, Pt. I: "Die Schar aber und der Oberhauptman..." (Evangelist)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a279b03f5a46692802000d610d765214d200af4ad98b720099f4f4b7375939. 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/GBELX1104172.
Saint John Passion, BWV 245, Pt. I: "Wer hat dich so geschlagen" (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff3b523bf6122a447f32da5786701aafed80ae54c17888d7b269f937addec1d. 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/GBELX1104177.
Saint John Passion, BWV 245, Pt. I: "Herr, unser Herrscher" (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eac500092dfadfe170865c2ad2f4fbb95aae86005d84897b2ab2b7546a13f07. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBELX1104167.
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
Saint John Passion, BWV 245, Pt. II: "Christus, der uns selig macht" (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9834145c31cffda68c3cc20a4bef8b954586e6064464728712c7dd83da67ec1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBELX1104181.
Saint John Passion, BWV 245, Pt. II: "Da führeten sie Jesum..." (Evangelist, Pilatus, Jesus, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cc95ee4fcec29a33f5d0a9a731b65648581f0dd3ab3d13ac0f7fa4a4e65db3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBELX1104182.
Saint John Passion, BWV 245, Pt. I: "Dein Will gescheh!" (Chorale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba138420ed9658cd3f4a3810cf508aaef1461f160db9058c214e4e49494563. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBELX1104171.
Saint John Passion, BWV 245, Pt. II: "Erwäge, wie sein blutgefärbte Rücken" (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61d35d4dcdeabc8cb7daf2d1025de70f9022193b8978d2ef1afb3c4a6021d10. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBELX1104186.
Saint John Passion, BWV 245, Pt. I: "Von den Stricken" (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85417cdcd4e5f903374b089cb8e4f5806b84e48e9b21752ef2290bd2eca75f97. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBELX1104173.
Saint John Passion, BWV 245, Pt. I: "Ich folge dir gleichfalls" (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c40b7376268bb6568b86bbef2b92202b0c31c2eb91caca481aa4b966a06ed1. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GBELX1104175.