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 0x20aaebc5fc22f6e8d861d44dbfad9c4db52e636fe8b0d54001882057166692a6. 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/cfa568b3-4893-4827-a2d1-ea3b4bf485e7.json and https://artists.proofprofile.net/proofs/artist/cfa568b3-4893-4827-a2d1-ea3b4bf485e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When You Got It, Flaunt It (From "The Producers")
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 0x80a8b134184ad863edd6ef4870109e21a38e32825f0d8475b26dcc23ea8ba576. 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/USSM10506162.
The Producers (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8acdeb287d323f3c2557a25fc47923a5326820f1679fc5db19374f39d0fc983. 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/USSM10103204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb094c1ac39ee918266531b85528379da4bf9a737174da14571402ba1b446f706. 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/USSM10103221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cefc6003c86e50c94c97005ee1bb8891928618cbbcd6f59b3885c2eaa2bd8ba. 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/USSM10103206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed0df8c5f666f14f235f552428da08c046174273fac75945e5c9de11482dec. 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/USSM10103208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301ae132a9498916eb59bce5e2ef45f5088ae9496552c332fd20da25026220d. 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/USSM10103214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044b71d3faec527c50e4dfa8bd682556d94743a087ff9f29013bb5798ab19627. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USBC19900134.
The Producers (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc897f5da72a366d122a955be88c92a7ad2552a8706de3fad3a83099b1c76ee5b. 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/USSM10506156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3424619edd25781d067bf1fa21a383d429b9562bf07737ccfdc2f0e5001e5c1. 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/USSM10506157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb699bdc36a7ee9e0ee7ce4357fdab3a5c67c60ad677561a4a4a3bdb4cf377607. 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/USSM10506158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2febe5380604b67418a18bd1816940f6ceedc2ca4f5aa69a28db3723297d5187. 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/USSM10506159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb6580abaa4a55f550f13520bde599c951fb40219b083256f105fb3805a3696. 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/USSM10506160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e90c0899e0c59945fa6c26bdf9bac5631a38adbca46066bb9d77a1008b54c0. 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/USSM10506161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a8b134184ad863edd6ef4870109e21a38e32825f0d8475b26dcc23ea8ba576. 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/USSM10506162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80d80ddc01b242adf8f73a9cbdf5bfdb54375ba75aa4b28193432817958f1a. 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/USSM10506164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c7811d128a79fa56eb71daeadd81669aeb617c59be4d7326eecb72f6f4b59. 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/USSM10506165.
You Never Say Good Luck On Opening Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ff91e6b60187df76a3fcb73820044cb37cf24e5ed2140ca54206176a7b4ba. 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/USSM10506166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ab5da280fed19c09c9fbb5227e34633a0384a79d7d859c630e5b0237750548. 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/USSM10506167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ed418775b9e69d753f0d5441540bebbc98d63659dac609594333bf71f34af. 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/USSM10506168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a9270e0e055380a953f02babd5af171417be1843dd186431dc77768f9c5efe. 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/USSM10506171.