Original Broadway Cast Of Sunset Boulevard
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 0xfecdea5dc6a5468a6ba5362d1e903a8ad3c729b36c6091328e20c33d496a4407. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12746007-1c2c-4d03-b6e0-5a1a6e372a05.json and https://artists.proofprofile.net/proofs/artist/12746007-1c2c-4d03-b6e0-5a1a6e372a05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sunset Boulevard (Original Broadway Cast 1994 Recording)
The Very Best Of Andrew Lloyd Webber: The Broadway Collection
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 0x775e847e0cacc0edc9d58085aa8da050081ea06490996948ad82ad362a327e16. 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/GBALG9400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32929da6dcae62d0b471db40bbdbef5e3d603170a5cd9fa67181943e2ada9054. 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/GBALG9400021.
Sunset Boulevard (Original Broadway Cast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a31d7f849f804a43a379dcd91685f8c221b88a3e161058ac720a881d1f18d5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBALG9400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bd97737031b51c00af39e4e874f32a09881a8e834a9078ca6be9fdd3409638. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBALG9400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5588a8f63de70890d1b44933d9edb9722c203dfca1325404d1ada68eb2754e5d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBALG9400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15678689e4a7d034c1ffa1459f25f796b936af5106ecc2d5607f222fac0c4e8a. 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/GBALG9400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2737fa1b3dd8724c4c0f538bf809692f5f55099f5b64a7971e8f43875839d699. 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/GBALG9400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b40176b135baaa928a62c91c20d01c947c49d7a5f3371c5d97a3fe466ff0d0b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBALG9400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775e847e0cacc0edc9d58085aa8da050081ea06490996948ad82ad362a327e16. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBALG9400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ef9437d98ff5eecee04df703ed2ec84acb011128911bd5babd832b5154f9c6. 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/GBALG9400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b00f1cca270a6f0626a899add4f40173a746f2dce8ea1078421018e99c6f1b. 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/GBALG9400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e17e76d5abd30506be2bf3562b4332eb892d5f901b02766974391b55cbdc53. 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/GBALG9400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a5d900440eb83b7bda3c42411f4220e2aca9dea567fa0c4a56ac6dfa45370d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBALG9400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3828ffc749025ede1ce51e5df18d603dd02608ad51f51f5d9657bf8091182dd0. 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/GBALG9400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811fbbefa38333c65856914d294532a80ffaf5dd8c1d72147c474622085fc7fa. 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/GBUM70806059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8617912c94412253b70657cfac4bad9885f75ea7b1a122622d84c3d4547fd6c. 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/GBALG9400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ab68c3bf7034ab0174e8f363b6cddbbb63558e8552e990358a03d16b60e5b2. 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/GBALG9400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a797f47d6a08e2fb29325fe1c251c8ca8126b11078814111b53dcd251907094. 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/GBALG9400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe954650a5f897cff68d0a49f398483134c799a96914734209034aa9b25b37c. 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/GBALG9400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef1b0f0eda212df965f937a5cbd98e484590d29d34892d606145dc9b811b5cd. 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/GBALG9400018.