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 0x93102974de3904d6ae3666e6300faef798949d0958e912bd62bbac8aa52ac928. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/962e52f0-9acc-4a64-b852-3a9a3a29e417.json and https://artists.proofprofile.net/proofs/artist/962e52f0-9acc-4a64-b852-3a9a3a29e417.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 0xf6f556f67cf592769b610ea7d94f6b4b764bfa4e1b59ccec07c1df2ea4495833. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:27:45Z), 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/FIBAR9900222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4381cdfbf2a63495f8c51841128772dd5fbd9f0f097d86e3929fa1143653c3ce. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FIBAR0200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1c3f559bb19e6ddbb333911c49fb21e2c543cdb1ca7e85f1737dc30f7b3888. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:07:27Z), 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/FIBAR0200327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40667ca88b17e4d97fe0b9054f893af056c3321cc65a045ea4da435e913780e0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIBAR0400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca13f99e598ceff67d5826430b229d343561eb47c24f13e07212e06e4458031. 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/FIBAR0200422.
Lavatanssit - 40 Suosituinta tanssi-iskelmää
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f9dae1956f26b9549ff88876a3b50bb6b9eda5d23e2a4d49206f9414d5c3ce. 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/FIBAR9900196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ac0ed6e0bf15346f62b09007b764243077dcc0d27e0f33cdd20f505aec998f. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/FIBAR9900218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8c06c59930afdc78c426a9381bde932c7888ccff90adbf4396555ef6dddfb. 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/FIBAR9900224.