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 0x262d9e6b1c9fdec53f16600a30b9109d6a75585bf16c52ad61ff05d658050e8c. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7de04561-098f-49b0-81f8-bc6026669b43.json and https://artists.proofprofile.net/proofs/artist/7de04561-098f-49b0-81f8-bc6026669b43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Henze: L'Autunno / Hindemith: Kleine Kammermusik
Humperdinck: Hänsel und Gretel (Excerpts Arr. S. Goldhammer)
Gloria in Excelsis Deo: Festive Christmas Music (Live)
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 0x1e2c3089eb1951dfa11aedcd597569f1ac77cec1b6fa132e7422c69d9934386f. 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/DERK61400021.
Gloria in Excelsis Deo (Angels We Have Heard on High) [Arr. W. Schumann] [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251260c47ae355a283bee102e23dd8470783c29dc2c5b80f832abeaa5eb95d25. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DERK61400022.
Solomon, HWV 67: Sinfonia No. 2 "Arrival of the Queen of Sheba" (Arr. for Wind Ensemble) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0cef470a51fa667386883f31e7309255ee7e1097c5fe76c4c2dbae4aa875a1. 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/DERK61400023.
Tochter Zion freue dich (Judas Maccabaeus, HWV 63: See, the Conquering Hero Comes) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b77c2c832406305ab2613f8eb7c9e252a028842507d920de0891d201db4a4d7. 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/DERK61400025.
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
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): Promenade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb898dde685f485bce632421f10968b1aff8bdc11fb8704cc1d6187ec0fe64adf. 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/DET901226009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b26e7f98c22abc812f765f6d24428780adeb87813265e5e145749d44833a2d. 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/DET901226011.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): III. Tuileries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78d0fa1093d3d8cdba17587615c00a8d1285bda337654ced3fd5c0268b05218. 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/DET901226014.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): VI. Samuel Goldenberg and Schmuyle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a63da8a546091a3349f4f1bf67fe02e0673962ebc8e5cee9f4f78ccb580cf29. 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/DET901226018.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): IX. The Hut on Fowl's Legs (Baba-Yaga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3581f5fd7b77a2d44a6d5c214cfca74fac89ac6b0946a28b4d5bac6a33e29217. 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/DET901226022.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): X. The Great Gate at Kiev
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c4aae5900f82482dcdc277f26be9e14a2cfb2b8a3b837ccf9e9c5b934fe1e4. 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/DET901226023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3addaf5c4d31824e55ef82d7dd15b8ddf20ec7d5fd36cd3cc6212d98bfb576b4. 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/DET901226001.
Que Rico Mambo (arr. E. Toussaint for wind ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb333ac17905ae223f4a0399d99bbf670345db4772720d239d0afb4034e37ec6c. 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/DET901226002.
Mambo No. 8 (arr. E. Toussaint for wind ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3937a5d83597b52bbae40e1e8e0d8043eb027203524b3a85dff71a4c73cb331b. 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/DET901226003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdd881bd754a21f2919c6c0085421fb9ef674900376534dde3d455ffbcc2cbb. 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/DEC640600153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78e26319b84a26b42243a9fec3f1378403ae58dab101a21be2dc0858807077. 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/DEC640600157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b8f23e2de6fc6c4f47e3bfd23a468993e07f4059148de5222663aa861eb325. 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/DEC640600148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5be3654f9b11dedc479cecc16c3d89a642309c18cbd4f7025e8c0d729b647b. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEC640600151.
Tanzen unterm Sternenhimmel - Open Air Tanzen