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 0xdcedc35059418fe352c29b20b659480fdda03e7f61973533927fa50c1b940b72. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f0f3c77-eef7-490f-a091-cfbdc9e68b58.json and https://artists.proofprofile.net/proofs/artist/7f0f3c77-eef7-490f-a091-cfbdc9e68b58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
First Time in Space / Mission of Freedom
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 0x301dd2ef889e88bc727598048094889135ba4121fcaf9a6edef1a1b5d860535b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US83Z2351301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73c6b40a8f61af88957ec477aaed251290b85a53a96271317425d3a733e67ba. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US83Z2348466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe24ed90d5864671c65b3332c573c46d08d5904f7f645f6846777f0df7132b0. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/UKR6V2580745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9694f025f7ce9d727d2e076838fd585b1cbf6197d281c6f8e6ba50de12f00507. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/US83Z2525510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18f24f9a3de8cfbba6df019b177ce363b086504c90fb7fca7c73ce66ce28579. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/US83Z2525511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb320bac3f3316ef234d8fe791c16895898ff85bf28168e2d54d177590d8b3a0a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:46:54Z), 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/US83Z2529489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9811c413dc367cbbb97949ad7071f300a8e7318978f8c3afdd34b204439325. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFX2581439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7919acd428e53df3f2afc3f41369e89fc0c8e6864eb87afca67a3c32a6e0f233. 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/US83Z2342323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999f09dd5354e22cf58f0b5a6f79af12ceae3ed80489fa46b4b035de52377398. 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/US83Z2476253.