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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822064919f613b5209ab75dfb272d23e7525eafea5ad369e8dbbf96f653a36e8. 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/ab5bea86-8c9b-47b3-bddc-064414504491.json and https://artists.proofprofile.net/proofs/artist/ab5bea86-8c9b-47b3-bddc-064414504491.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919758d741e9b87831e0c5520c75857b6518945cf57f9e93b7447045438f2c43. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNWY2301640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c3cec3d4e6575e9b52aedd06d7482be384a811765d3deb9a482d1e822f8b54. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZRP42317412.
Life imitates life (slowed) [breakcore Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960e5e12cbf0f7dedfeb6cdf0479c19e2cc6563cad75768eb1a63c89b89ad78f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZWFL2421633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1b82b376f98715e94cae27147387777686403e0f8a54346479a8ac56d2c3f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:47Z), 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/QZWFR2445563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf01514059b8f223c8d8abf76af4bdcebc0a2a6b456d22633b08afdcbedfe1e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZWFR2445510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff815bf7a63a7ffcc338f71877d0d12715bc6f823987c3334bf758406ba7c8f7. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZZ782490024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e55aa7a015e7a147029a31df7e5134b25ef5a35b36d28aa806dada10d529a4b. 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/QZES92566182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0effc0e6cdadf653d0b36487c1917a2b5f38851c19a8aa72891c599cce4ddeba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN62595198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc717ea435f5fdeb4325ed75eb166310c401e3b8ed624b0993dd7cd5002f4604a. 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/QZMEN2549034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581409f27a6da28af52bae8aaaeb69551480d54109524f0d8e421c8cf8de218. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTAX2529137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4b20f5995174fc767bf69a12cc0839625cd5521c8236673fca8e9821e93e4e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZTB22513480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d9856d6e4caa8c25676f13faef380b2523791426bfd94e425b08cbfffa8d9. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZTB22513482.