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 0x53261bfd4b42216fddde1ab8280fcb1fcac396ef77752ee65f824543979d673c. 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/a5f816c9-0e14-49c3-93b7-bee717299030.json and https://artists.proofprofile.net/proofs/artist/a5f816c9-0e14-49c3-93b7-bee717299030.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Highlights From The 20th Anniversary London Cast Recording: Jesus Christ Superstar
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 0x89554b8b2bac311695606ece10d227ab7c76e975c6f7498a3d18446d8eccbec5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USNLR1300521.
The Amazing Fantastical History Of Mr. Willy Wonka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb230e33ffe9a4e051a829d2ab0e08d5822b6bd530e0e38b8b742f444b707233. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USNLR1300523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77337ba4582f0f3912dad6d3d590337ce87350782f56d122e34988838b4b8c2b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USNLR1300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff74c6df6dc459b2dc2d681c4411a235685242377d102797ab41d01c5d553d75. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USNLR1300525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09dc0c9e5acfae9227f1842f0d2a3a5ee06b70a6e4c758b05256d4232472da2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USNLR1300527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a94399ef19856a59cab7313e36aa72f477ec6fe7b0aded6bec0f47006d28850. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:53Z), 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/USNLR1300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795e9e86656f9cfee48465e830cac3ea15474e89964c5fe46ea2f05a5865566b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:36Z), 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/USNLR1300534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b899dc4333f05d1af0401d716c6201bb60cf4191ca732adfdf1540679f2f81. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USNLR1300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c5f0cbb07ba81f92afa92efb1b31b37b783237e711a02e6e22c75bc056ed91. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USNLR1300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c9fd1b7919fb5e396863226d35e1ce1e5108ab43e89c36a86d6a5c6ada5737. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/USNLR1300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac7f5fa0d66612bfcf9e0cb7608fef1724bfb83aaba627ed75b74ccc57c376d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USNLR1300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba90844c420331518be662f13444c7b8836113a0201de4514e53605de81ee080. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USNLR1300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2c21b52b39c40ed211b63c7c8b56b716872a2712a8001ea16bec624fd149e1. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USNLR1300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0718d83316b6c23aaf810dfc9990a9a03f967f26d34dfef6628f90b5f399977d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USNLR1300546.
It Must Be Believed To Be Seen (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef90b0c50073f5a03d893f3272f28a2c7d474589f8b7f723ddf6950e68b5f80. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USNLR1300547.