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 0x6d2eeb839d3f0f74ecced851a09f2f5dc209946ec46edc840b32b582669e1c94. 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/ff4362fa-01c6-42c7-a3de-7d05b702fb45.json and https://artists.proofprofile.net/proofs/artist/ff4362fa-01c6-42c7-a3de-7d05b702fb45.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
New Broadway Cast of West Side Story (2009)
West Side Story (New Broadway Cast Recording (2009))
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 0x89f2adef7e9e18bf257191a5fb6161f23ca49788fb0a48c2855f48ba60d4799a. 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/USSM10902515.
Xanadu: Original Broadway Cast Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf1ace83a7ca6e2caab7c79266461a8d4fb59b5d0ccbc1fd445bd8ae3a7b020. 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/USB960885801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec44b30325b67e56c5c166086a7a55118dc387f5920f012bcd187c46c77c46c. 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/USB960885802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca0fa7c284b6b7af39e285d5d52e45ffb773946c16528557f8c8588573250b. 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/USB960885803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc51e40e8c2d13d510d6ae71a13a65546553af14ce710afadcfd60639b15602. 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/USB960885805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6a2a9ba20b5fca80d732823167d0974f39be6bc2fd91eda3420ec0695839e. 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/USB960885806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a72bb63c20c0e9164f2dd472964e0b379c61d0beb1a769e773fcf85df396861. 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/USB960885811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264ae8dc1ffe847717bb664a6b7b6cdac12ebc86edfd424327252f39bafe171. 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/USB960885813.
SpongeBob SquarePants, The New Musical (Original Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc7db895a99948629f54e82e5d3281af6f15f8f16280e7eadd6ae53919c3a2c. 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/USQX91602692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645ea113c3f0e9c6d08c5694f58aef2247b5eb57b33d14f193a040d521911e4a. 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/USA820500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68308cc38b8f13a56fef7064ef741be13d6f2fbc6c8747c8044fd32ce7df4c9a. 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/USA820500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deefd686fc771864d91663b8c19bbb86071b4735d55647f42431104426fd5c7. 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/USA820500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53668e6e1a0aab2250718788b83ec6cd119fdf6b4069ec3c5452788e653c966c. 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/USA820500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb0c0a0f9479753ea2d9ad0136cc5725f3b4f0d562aeea88235b5b64b4fb3f7. 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/USA820500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2463a852b474729fd8bed1e1d9cc9195c1c716149b6bc99e3f837560aa0db0. 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/USA820500073.