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 0xffdc2b5cc02fa5266d9f0d570137a6c9e5bdde040d5134c7674281ed03d73dbe. 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/10f0ff04-8a6f-4bd7-93df-4cd30db1fc86.json and https://artists.proofprofile.net/proofs/artist/10f0ff04-8a6f-4bd7-93df-4cd30db1fc86.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 0x915d62efb5765eba1c861e6871a05d66eb080b880846da923ef463ecf49fdc75. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYOK1734470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01c4d85451f8e71f5c59168b58809cea2e40c11131edb5e683ba7dfd11f256c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:28Z), 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/SEYOK1734471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cac6e911e282f2fb2302a79f9860857ccbaa056e444df5ac43638c18f16a4d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SEYOK1840983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8baf166218ae1ac69e56414d4dfa590e25f770af8734706f813c105e31296b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:10:10Z), 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/SEYOK1916251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d1d3e238e3b68f495c58e5b24288021810237eaa3fb0202065caa654865287. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SEYOK1916252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc856251282c469c06e807635a850198033d7e8b2be86801c7dcd884715a4486. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYOK1916253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2eea42ed26174877de5511a127883f620e1b9c3cbf35bc221ab5741eaaa97f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEYOK1916254.
Classical Masterpieces (In Chill Out Mode)