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 0x604e9e5ee811fe8d29c280be5e622ce9f28c9536783fd51b6c3eb9bd75480d5a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d48bd725-8890-4c24-9228-a28bc2afa143.json and https://artists.proofprofile.net/proofs/artist/d48bd725-8890-4c24-9228-a28bc2afa143.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe1de7fb4fce4fb75b7aa9650ce2a3a9447984a9083c8560b83e1c9b9006310. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ATDQ41701012.
Bonus Songs and Live Recordings of the Album Come On In
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38b670489a3cb06b0d4d92074b1c6d2341f9ec797f79e27abd083bb53844e0c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:09:58Z), 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/ATCV41900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3635958ca76dc6e00ebf323942508f45b45e3dcdf55a53f1be533e5104bc11bb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ATCV42400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46153dc64bc5133dd423f8ec82883b680166e49cc2cb63c3360cd701e35dadd7. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/ATCV42400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dac31bb9b7678fa2d7f1c968b192e9f81d0d2b3708aa5850192a97927404970. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:22:08Z), 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/ATCV42400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1313cfe1a68b01b6ee9482e45008bdcae348c189af376da292b4613e629bb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ATCV42400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc824544408f25817d24adab1f24b3948fcf3a1649565be559e7635f334f7528b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ATCV42400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19beb314d64ec858313d69d3dd597b6435687741e075ab96e87be1d408ce6ed. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ATCV42400109.