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 0x8f0472ed8143ab2ac3b13039ecf3394fa59afc538b0dc6663ba5c89fad64d923. 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/b2a455ee-b346-43d4-855b-78a1b20214e1.json and https://artists.proofprofile.net/proofs/artist/b2a455ee-b346-43d4-855b-78a1b20214e1.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 0x54d77641058a1fd7d16abe6db70d1876e209b7dd53eed25cd18d8078d3c6eb0f. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:03:40Z), 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/QZTB22403291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b09e9a09e3d422ffed5eddf221842bbb6245df6ced51bd99e09f6d48699f2a. 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/QZTB22403254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff21706c2e7d4a3e883af85633fcda1fc08608152b1088955426e39ec90d3b4d. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:27:45Z), 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/QZTB22403255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e510ed5d939b6bcf7a9055d7e78b6e53c74abb4719acc770f4e563e830c75. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:29:25Z), 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/QZTB22403262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557fd98846a9ab949838c503cf630e2869b5a4dc49633306d2e76be051a855a0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTB22403270.
Tu Shaamil Hai Mere Hasne Mein Rone Mein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bed07ef3363dac4e5f722b76f875793f59689aedc0a72a3ac68518e1af39aca. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB22403272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741f62e4b5a8db73a4ba7eb9f7557e7912950392a41bacb293e9608340113233. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB22411916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993ac1e82a498313989cd867b9d5106cdef9965f290474ecfffedcf2b7de3be4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:41:20Z), 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/QZTB22411925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fc9a186bde881f98ff1a6d5b315b890333ad13294ed67295db6d16a966d957. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB22411932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f22b0c11adb03a94f715b6c4e38f0f81167cddb8705b9bf712a9ca0e181f965. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTB22421107.