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 0xc14f6b3b99b74afd74b02913d8c702dcf855dd775466a10c5d45a2539dfba147. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4288087f-1d09-4de9-8f2d-989669f939b5.json and https://artists.proofprofile.net/proofs/artist/4288087f-1d09-4de9-8f2d-989669f939b5.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 0xdf0904599974633ed8ff2687decd5f4190dd37d5a87776a8bd72890ec88ffdd9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:56Z), 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/DEMZ12401661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fde4aae6e3006dc8b384e74ef508fc7df208e08e2f1dd2e65f6d3f68774ed6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:02Z), 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/DEMZ12401662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95459d909b2df0dc5253d20ce4952b833e97cad431871b4c27f3d1845a0699cf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEMZ12401663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a471782233246f7a87eb493e65eb14f9f0d4975d7f2eab61bcad199016b4e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEMZ12401664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce02822dedeb62b08756adaca5d3143b0da50ba88d7c7d0346e957ff0b198c2. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEMZ12401665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94037da3ba57570a2dc7f5014e5983dba62ad9d5aedf30232a83f090badf34f8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEMZ12401666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06af555fd13bf9a35a936f68db00aaa3151ed0e42842ec6133820143691bcb1c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEMZ12401667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa571cd05fa10167666588721a1a289d49500d59ef7ea0897adc29d7f2e34dde. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEMZ12401668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5634716489078c7a56c1f172b5a245089ccc91c540d1be1d493be83195ec32. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEMZ12401669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a89cdaecc1d8291355b9c12ae7015c71c58e5163a9f8e2aac4f79d304598f7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:42Z), 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/DEMZ12401670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df7abd092ffbde30d3574ee04a36e820cdaf854bf772e6fd1036281e6a766ba. 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/DEMZ12401671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0649352631b0a990e7816fd609de42eaad04cb0f5d40ef93f0c193d17a1754. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:49Z), 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/DEMZ12401672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56175a72b2df2e56f8310b42f047eb4f93fc3fa7b06b85b3cef9b94c1bcf654a. 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/DEMZ12401673.