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 0x2b0f97fa8b10e5da1ee0e9dd6d06722ee20f321ee7f3e506b640320c1b0c671b. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52ba74e-53b6-42a4-be87-018332a638c5.json and https://artists.proofprofile.net/proofs/artist/c52ba74e-53b6-42a4-be87-018332a638c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Autumn Leaves (Arr. Sharny Russell van Herp)
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 0x2912305b5589201445273e628c34234e6f78429a4a56897ef35b97c0d89be8fd. 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/AUAB00650171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b5688c9eaa423d4ed57d26b0c2920552d473b0df8897cb00090160e902d4f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/AUAB00650172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3195e6923acddf2f3c8a2556d09066d72a03e517c99567f789a96962a6443b34. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/AUAB00650173.
All Love Can Be (Arr. Craig Allister Young)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ce83400989b0ceef4ba8a481fa25e276f7aaf0c747dd21270056e0284357ce. 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/AUAB00650174.
The Salley Gardens (Arr. Benjamin Britten, Louise King and Janice Preece)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4020307b27f1319f136ea6da471463e8718cb99387ef3842bb6c545ee4069f32. 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/AUAB00650175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a1d75b9f5ce569ba5e2dc7b4dd49747027e492bcebc938056aae92e369751f. 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/AUAB00650176.
Castle on a Cloud (Arr. Craig Allister Young)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afb30f5e5297e936739752bd2a9b5decfe69a4bd4d2bad00791a2e728d3e227. 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/AUAB00650177.
Chanson à bercer (Arr. Craig Allister Young)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5364a8a1ee373a963f5c5e65e00231e85cc1f7cdcfd0e7cd3095d7edf2049e30. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/AUAB00650178.
Love Me Sweet (Arr. Craig Allister Young)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938e0313a3bc8098ceeb01b7ca0f628d9ed521d7d405080a8768ac241688ff45. 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/AUAB00650179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e875a258c6175ca9dd617c8f2d1dbea5628bb2948f32fb9b631df8391fee9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/AUAB00650180.
Cinema Paradiso: Love Theme (Arr. Janice Preece)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c2ca1e72f95e6b521434ed4d177b2e85723d7af0ca2d4cc6eae664efdceed6. 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/AUAB00650181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae922c763eb5faabcded590bef4da34b51c89be4b13f60fe805f2b2bcbc4f231. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/AUAB00650182.
The Tales of Hoffmann: Barcarolle (Arr. Janice Preece)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a83b04fcb62f9e541f656fe44b406168403cc62cfe70d497797ffb2989f5f01. 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/AUAB00650183.
Just a Single Voice (Arr. Janice Preece)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0f56d14e56c6b941f740aaa2579551742f0c55c0f4de31d95db461cc98cfa8. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/AUAB00650184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed41a83b697f68163f166f71c2b6f4462d767e4fb787a8b99afc612d671c921. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/AUAB00650185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c7171a687afa8ce84f9982de21903f8a28bed8cdb274aa2d958448a3471b00. 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/AUAB00650186.
The Night Gently Waits (Arr. Craig Allister Young)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f405ca15abce8e4338e7a43fb31b761a9d1c6299a6d3544d5acd39262f0adb. 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/AUAB00650187.
Irish Tune from County Derry (Arr. Percy Grainger and Craig Allister Young)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04477339851eb43b0946d5fd6458166edcd1918aa30e180d25f8028efa95acf7. 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/AUAB00650188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5706114c9d486a0c72a57402b2b9a2257bf0e2eb961d68ce89dbd6c1d07846dd. 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/AUAB00650189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebbb02a3e1deaf1abdff86c6d768a8222320c126a1a6651ed1c762d1abde783. 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/AUAB00750850.
The Salley Gardens (Arr. Benjamin Britten, Louise King And Janice Preece)