David Brophy may refer to: David Brophy (conductor) (born 1972), Irish conductor David Brophy (boxer) (born 1990), Scottish boxer David Brophy (historian), Australian historian
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f7185f06ddecd2a8410e0fc9ebba8c106a08dee681c8d84ecb0e46a3e415d9. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/618a290f-af21-4eff-b12b-a7ef5b4f5f7b.json and https://artists.proofprofile.net/proofs/artist/618a290f-af21-4eff-b12b-a7ef5b4f5f7b.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b496b2d4c6939255cd6230e3576abc3c9e6a51c0f1c697b53d7c0419a21b52. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/IEAQY1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4e6e7e306be5e59cb4645bd051e8b491771c30444bd0849db97e2882e16d25. 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/IEAQY1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e823c208738c51991e27502a355ff6722b9e1cc2276b5a68dd2672d72ca2e16. 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/IEAQY1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c911c66e50d68bfd32d2d293c184ebc6697a0a4d04df3968cc799af17cce59. 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/IEAQY1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11bd9824a38e7a0e6275b6018add77dcc002b98959c3bf0f6c2f32820808d3d. 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/IEAQY1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b042adfaacff6bcf0f1e2ad42d11d80f469368e3fd19b475e6752d9b96a18d. 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/IEAQY1800006.
Riverdance, A Symphonic Suite: I. Cloudsong
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf964113fdfd50b41f93a1f80182a1386325668a852f5df04f3711bb501ee8061. 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/IEAQY1800007.
Riverdance, A Symphonic Suite: II. Reel Around the Sun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca279e5db876f2e186c2b4a2063b90a0408a3a3ceab90c66b74ba46bc70282c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IEAQY1800008.
Riverdance, A Symphonic Suite: III. Caoineadh Cú Chulainn (Cú Chulainn's Lament)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557e3729a7504214e9e91cf048eabb026cc4e1fea3f4cffd9d397252f92b832c. 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/IEAQY1800009.
Riverdance, A Symphonic Suite: IV. The Countess Cathleen / Woman of Sidhe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db402d54a4a664fa66ac71da430e59174fbb0c7377af41eda74bf64a0708e1c. 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/IEAQY1800010.
Riverdance, A Symphonic Suite: V. Firedance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be35791d6f1e5d25e813777318dee78ef5cc7e59732e2911b938e0f3f934d8e. 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/IEAQY1800011.
Riverdance, A Symphonic Suite: VI. Slip into Spring
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83129d45769b32a1cb23aa76eba816be3715058c56fd5c29d56e59ef209e083. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/IEAQY1800012.
Riverdance, A Symphonic Suite: VII. Macedonian Morning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f52ece884f76d0f6fc4063bdf603bfb72f5c0bf899eacef88e946a3d4b7a42. 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/IEAQY1800013.
Riverdance, A Symphonic Suite: VIII. Marta's Dance / The Russian Dervish
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d64db2a489bd3c6c4044eb0d5fcb7dc601958918002279beb69868c0997f2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/IEAQY1800014.
Riverdance, A Symphonic Suite: IX. Lift the Wings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde81797cd010a9236c817db5a39e6232bac65b7b6f187f804fa915d42ffb3abc. 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/IEAQY1800015.
Riverdance, A Symphonic Suite: X. Andalucia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000c6f7ba2ca9821f02013e0ebc21608e2fe5660e4370fe146087f9f80b7e991. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IEAQY1800016.
Riverdance, A Symphonic Suite: XI. Cloudsong, Riverdance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e340880d9e99666416354eb56c591645b9478088e5d12b0e7914421c1ec9d. 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/IEAQY1800017.