Sophisticated Ladies is a musical revue based on the music of Duke Ellington. The revue ran on Broadway in 1981–83, earning two awards and eight nominations at the 35th Tony Awards. Production Sophis
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 0x10c5f6f5c2924e0ad6dfeb384aaf6b1d8546602f16c7cbd53c56ce28f29f3c99. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f87b04b6-f097-49e7-85d4-e7f230a8204a.json and https://artists.proofprofile.net/proofs/artist/f87b04b6-f097-49e7-85d4-e7f230a8204a.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 0x57c4ab0eb048e61d0ab0a88110e9cff8c1cbca1e0752ae56799a840c776c727d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:11Z), 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/DEG931850702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6da13eeab3cd4cfc0effd990c4aaca5432e5684d933f581353d20945129b52. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SEAGA8703010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19b8cdd40c2f91bbf5d601f440eadd0b65e1a83210ddcd832a1453ea08f2d93. 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/SEAGA8703020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a15d152ea43d668dc918703b435cb9710f64bd522d3a5f58079c7c718b29e1. 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/SEAGA8703040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a9c1756d4e4e3935e0089ecd5becff816bd682daa738d1c09d447c954d34d. 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/SEAGA8703050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc94c2e1de71d4cfb76cea0a7c18f278ff7cb099d6f8de34581cfb91e53eb2. 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/SEAGA8703070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a3f4d765f5e1ad50c3e1d4bdb75032362777b0e2be1e18ba5358a6ff4b479. 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/SEAGA8703120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf563d12d75405b7e94600cce5bca1fa493915734971aac52e293f93e105bc543. 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/SEAGA8703150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4920bd5f4eb1b31f14952bf0c7efbecef09ba60ee08a88a32f779841cdca403. 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/SEAGA8703030.
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 0xf6b8f9d7f16e0198f7d70cdd6f79ca11b00006459cd628d29f801b6384fe0dca. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/SEAGA8703060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386191be8451bd103487ec98f645ec84cc180f3a0b77aa8be2e39e8126cf49d8. 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/SEAGA8703080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f845ebd24b3383119adfb4e57f3ecd6e54f92d79de788c2d64c0312beda5148. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/SEAGA8703090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1584b106a2680a0852b0fe5e0d29d3c8a75f4404169d0e2329eb1c6e776eb4ca. 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/SEAGA8703100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb6d01da787230e45b3399e396259a41c56a1125bb7fe45999e743eeb35ae8b. 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/SEAGA8703110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b45616b2cc58ad03c60fbd7b5625f4500bb7c7ebbc1858c59d50740ac3d95b2. 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/SEAGA8703130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be3b2c7d02df30ca5e7090ad338dbf4b3fb6073c650dd74d1a71047fbcec9ef. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/SEAGA8703140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6c06783316dbfd3c7dbe41764158804c16c4b9456f835a0f0c9526294de105. 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/SEAGA8703160.