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 0x5796f883b7364b4822a43cbba7b7dc0b74839dc626099f82f3d0b5ca4d518ab9. 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/62ed8638-ee53-40da-9913-ca117a6fa6d4.json and https://artists.proofprofile.net/proofs/artist/62ed8638-ee53-40da-9913-ca117a6fa6d4.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 0x3a34a8f6414dc538ce936eb0e1d3edef08ad76732c0d56733b62e5b252ace3c2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:53:05Z), 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/QZFZ32005817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7d175b354a79a410a33925b36937798cb69f9d0d8d980c413a81033a1d425a. 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/QZMEM2007677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aee1f42f47c304a48d2a1213628fb19664f068b96bfcdd2f91882ca3e4f5171. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZMER2083146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34fb391dd29418a9c0b16fee90cb06dc6616e779e4087da071eeb4820483709. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:58Z), 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/USANG2130901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07b7017fde61d8f835850d5e065b2be7a52a23e75298221a6981e6f3c00a838. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZN882138670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70d7e97b8b0d2f8bb978d200a98054f72e3461ddc2a7dd603a5376c759b6857. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNWQ2152970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf0cf68f87df89eb0d6ed1e058e70e4a57ba9e2837cca2592db9f2d24ea39b6. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:47Z), 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/FXQ892100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bfb40550e477600e0ad954740de902b9509ecd339229fc81b926c4b025ca24. 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/QZN882184858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf90b4e924bbd87d52518edac61d20f97a5cf01a57f0bb519391347d81049c40. 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/QZES82288154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf673e2c2902ad17e66cb061304d82e6309c828871b17d47560cb75a7066213cf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6J2270855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a32dc8f56419d82df142d4827a7000453fdabfd6e457a54b8e8847c100405f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN52379629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8501b77cc40803d053483b81b669af98ffc538538878ed0b08b6548f52b657e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2202955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b4158f78dc497efc5bb9321e4866e317cac3b3db9a43ee32341c9d19d7267e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2120629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c38b367ea21a173356573bcfd93b01fcf165b91c752fc352419d9d3b37a1aff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2103742.
It's Complicated:Love & Heartbreak Vibes, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecaacf03c999ee415f9374fa75af2a9c1f678095b1a527cf5e1d51b565d04a0. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USANG2166103.
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