Stephen Sondheim’s Old Friends Original West End Concert Company
{"copyright_id":"0x6a27f13de7db7a23fc14ba42a259f0c77ad510c9a4781efb79068948c9f452f7","name":"Stephen Sondheim’s Old Friends Original West End Concert Company","registered_at":"2026-06-14T05:14:36Z","symbol":"NIM0349561","token_address":"0xe89a877a55c14c0eea3cb89fbbd480303afb3b83","type":"artist","uuid":"07ba5c40-20fa-4803-88ce-bf51ee6fc5e4"}
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 0x6a27f13de7db7a23fc14ba42a259f0c77ad510c9a4781efb79068948c9f452f7. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07ba5c40-20fa-4803-88ce-bf51ee6fc5e4.json and https://artists.proofprofile.net/proofs/artist/07ba5c40-20fa-4803-88ce-bf51ee6fc5e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stephen Sondheim's Old Friends: A Celebration (Live at the Sondheim Theatre)
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 0x43bcb19fd63ef97a673aaf87e489be1e5003bfdc760710b25e9a7f36f18ff318. 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/USRH12300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde30327ea1c8cfb64183f13e332e75d155fcd5f140f2f2ddd447c4e6b69c0a1f. 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/USRH12300376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7372e6faaa3659a174f10bcc7643eec09af2f3d9cc2010e171f8bdc7d20a22f. 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/USRH12300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a1e3e607652819e5c9e5d75685832c5b6311c8a0e6fbd621eacbd86081d3ab. 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/USRH12300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7312bc7aea537cccf10c34ee8bd759dafb769f03a4a681f85f3f7207271d112. 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/USRH12300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd706a6f738533446e196b682b6edb5dda75f92fc1dfc2a3b7b07d14983dc4449. 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/USRH12300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bccc5d4445a42d10bee6235a0fa8276bdb904e002135d33e30b9e9ff7d96125. 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/USRH12300395.
Entr'acte / Overture From 'Merrily We Roll Along' - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeef3dec3654b641ce2d598bd3c0e4eb333b6c074fbb00f2cf87d33fd6cfe16. 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/USRH12300396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03da06a8603f753291eaad7afe71524de791b05d5ddaa4876ea4428a1cd2763. 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/USRH12300398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0324b50036a4bb5ca787a49d8e3d595dc738bf7cb62bc631bfd0a293fc172f7. 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/USRH12300409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48f0a2dee978ff588d3a2fd15c306c49786ea38e378e8bb164858b06d957cc0. 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/USRH12300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091133661ccb805a55efb9e19a00d71f69350919e6edac2982b0b254d1339b80. 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/USRH12300411.