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 0x4941b49311533aa9183fa8e5e890264074e62abbd75e7bfc12f0ee29713fc4d9. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6510eeb5-f262-4098-bbfb-d703492c1da5.json and https://artists.proofprofile.net/proofs/artist/6510eeb5-f262-4098-bbfb-d703492c1da5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spectacular! (Music from the Nickelodeon Original Movie)
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 0xee5a02a290f9096671d57f7c52a49736ff3e8d74cb989d14508b3d6d5f2001ec. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USSM10805158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4de205a7a48a739193f5e35d0a690aac29c27e3caee7e0fe56ee021e283b09. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSM10805143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db4dda5de9e2f98eeb1236b3a9443f4ad5c879c29e9d94e6fcdac730b6af979. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/USSM10805144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72c79832faa87d698cfa4ec80cd2c7af6038380f55734f1cdd8db237eda7b36. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USSM10805145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9873ba03facc0c418aca9a82c4c7b5d7439a7664ae421a25da541b0b139ce7ef. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USSM10805159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2e2bdc4f409a3eab8f5e2da8d14f0da1868a27013119222cf82fd31772faee. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USSM10805146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6fc302209eace4d7480e7facf4916506698703ed8dfbb0eb858e7f5054a706. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USSM10805057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430e3f4636082d408a6aa207780168e3e17111a94532d6f21cf6244c43675479. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:24:16Z), 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/USSM10805141.