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 0xe7519cbea07b9615d0f6df916b5a5d3f00b4dd1b3838dd3fc4c8de533eb20a32. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5230ee30-0ee4-45d6-81f6-f733338e521b.json and https://artists.proofprofile.net/proofs/artist/5230ee30-0ee4-45d6-81f6-f733338e521b.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 0x4b5dc099cc862238c0b885d9d9a217e735324a2e7fc93b74ceda717f9602954f. 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/DEKF22500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72a33348ecb55806d8c41d4819e6e5fa322ff3476d2dab230f2064fb7eff849. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e7da69bdf025249829a1c48db3b17c83a4c39048df8a2ae67477776b0eec7a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22400482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eb31b385e9e9df055dc6047b4bc5bad99e6227ca65059a5a35e1663cfbce61. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a393054817301b0c7e1c3f454bd9e46e62a8757dabb05169008f09a7ad34dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff090d3098eaaafe1ff3aabad9d4e13e845c4fa00043ae4c626946e6b43319a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef0441b4fe0496ed2beed8d10d71a65206eb0fb8d1c106e96e6750f5d70432a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22400488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72a33348ecb55806d8c41d4819e6e5fa322ff3476d2dab230f2064fb7eff849. 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/DEKF22400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45edf642ffea7d018b93b7d69e4a106ecfe4a73d64524ffa3342485e93101ccb. 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/DEKF22400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb32a8ab4e93ae46142710040914df144ebf36024f78a5557b39027b7aa2732. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22400497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6cd052793add4bfea6456deaa19d0cd8385452a56709c61b2ed29e69995f75. 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/DEKF22301292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59a08806e106d36292674bd2f6683aa3b52139ca6793ccea13ea5409c2358d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5dc099cc862238c0b885d9d9a217e735324a2e7fc93b74ceda717f9602954f. 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/DEKF22500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2735d8bb778e24b73c13fa48328f20cff8012146b9ee2afc705ae57c4a5f186f. 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/DEKF22500573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40941863b409cb0d7043161ddbdef0a13b10431af0575d20ff1b7ce53d6cdf4d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF22500665.