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 0xfd4ec245bbb95ccb2e271435674f540ea1fe196e80c55d70233f4a864277a1e8. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e1fb56f-82a0-432c-ae12-5032054824a1.json and https://artists.proofprofile.net/proofs/artist/9e1fb56f-82a0-432c-ae12-5032054824a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x0fe4ad1b9986dc59a9e85d1521f744acf38d46468d78d68023ef472377b8b427. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GBMA22487695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4720be14a8b93510dc59db6942a9e3d2094291ac68e779ff5b45a56050e9df6b. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:13:20Z), 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/GBMA22487696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0802ee840dfb7f6d68552ac7ae0b211492082e2faef61d6432bd8efb2d4dc80d. 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/GBMA22487697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38bb5ca7676417b8918a04d257beb2c0af1b4f0eba0e140702cbe8ac1bd59d. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBMA22487698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd552b0f33fb1e2d3920050e971697ccc18b27a27ef292392daf98773a2f4ffeb. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBMA22487699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6b76705b7888d2d4d4579a82554984c95d126e7b93ac7ee6c568c76cdca1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA22487700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8e6a8226c258f23d4f0051ad9a2067b13680e7556420ec2e2b324fb880f37c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2304285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14347d0efed8c44d1c225722de93944ca65e32ed7f438927439874973dcf93. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBLFP2304286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208f3a239580cdbbc76ba699f6e9dda22ab82e258391c0c4c187dcf861acd9be. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBLFP2304287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac417dd58656aed29cd7b8c5ebbbc4edd5ea38f295651d4483758c16f4355c44. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBLFP2304289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa759e5faab56eb3c794e6e220e48bd0a84abeb8a5de2a300c9826f930eab8ab5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBLFP2304288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1e1aac6bb82cf8bb4b57137e69eb2bef798d9bdbf6f9dbdc7c816a38a63cc7. 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/GBLFP2304290.
The Owl House: Opening and Eda's Requiem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6166fa83c25ee2235c4a37d40fbc65b3a687541587505af07f5e38af6fe5a4b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBLFP2327179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f89a6886da9ce819947e75ddcb45ee96481ae52506b1e3ff93ebc933cd102fe. 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/GBLFP2327180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a66225099f24001f4a473b2d5e7165927acb0e8a6761de8d22c6c7be7cc3d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKXN22508879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2464bc4c16b12e8b330c5a9f052b818720d05a1dfbd0c2133484a9c099c4ec. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKXN22508880.