{"copyright_id":"0xa3edcfcb0dbc0eeb8315debbdc729b5ccdcc84144c2a43f40cdaff996b3f9cec","name":"Sienna Sleep","registered_at":"2026-06-12T07:32:12Z","symbol":"NIM0229178","token_address":"0xfaeaceb4fa864b216c74245c9f4af3ed4b733ff1","type":"artist","uuid":"b1c4e7c2-88d5-4953-8e7e-aef1a1e514b8"}
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 0xa3edcfcb0dbc0eeb8315debbdc729b5ccdcc84144c2a43f40cdaff996b3f9cec. 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/b1c4e7c2-88d5-4953-8e7e-aef1a1e514b8.json and https://artists.proofprofile.net/proofs/artist/b1c4e7c2-88d5-4953-8e7e-aef1a1e514b8.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 0x4242cf3c10737bd81f5c631dc7b66612de5cfb5ab11add1b6095ba9d57d81d70. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZMEP2107148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e97ea026e48082c921fd955c8fb604ef13bdae6a64ee8876c82cf1f9d093488. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZMEP2107149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d302342d8dad380b21205ae774a5deac077f726463394e24984ab30d04162c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:32:33Z), 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/QZMEP2107150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f62ac39612d64b1cae3f8cc493560ab1318fb125efda00a92330b198983957e. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZMEP2107151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4940755775505683424b866f49b4951712389ef6bd425d24ff5a2b200198fa07. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZMEP2107152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef0329056dbd0cfd8347e7b20b28d09a0382e5d20b748ddec2ab829401c1aee. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZK6N2214482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3be1b832126f26abe074f53abe7c7bf5620c89c5be8b252ca2cc2d0414872e. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZK6N2214485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93deedd6708f2a07c59ae2f82c7d12a034aac223e75dfbe9ef891549d368724. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZK6N2214486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe029b5fed689bd684188b1d84674c89d6e0bd9dd7a429d3cafdfe3c64f894f82. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6N2214487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce712be3bd2cdbbb8a8644be7e203f988db1c08e1031ee26aeac28ed2c47b31. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFS2329921.