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 0x6a0265e92bf51183aa208d4897deee698fc219ad9ac7ac1012480a06588742d0. 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/828b68ac-6030-4ae6-89cc-afb205a693e8.json and https://artists.proofprofile.net/proofs/artist/828b68ac-6030-4ae6-89cc-afb205a693e8.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 0x3d6b0f32302cc6b0341dae8981a548d843f60726b85ce979c611a00b2cf955aa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLRD52355137.
Wishes For Your Soul feat. Sydney (Leniz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeafdb03b165075e8bd1fe0f05c15bcbf96e63583d63ec49277eb8a3aac5b10. 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/NLCK42212363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c44797632ad446217c0ee8b8772c701c1b2a00b2c63ca65e1ff5c63d4ff90d7. 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/NLCK42340015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb991f263dd671f9405a3d1ef5198b4407b855c89fdc01429a652fd849d86eb36. 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/NLCK42238444.
On Cloudy Days Like These (Finnadrift Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9911ac269c7587e306559b86c179402415bb03e51ac822cac3470377743c19f. 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/NLCK42226320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98f433619e778c2eaac5aa0eb3ecaefd165eb2a0283df9a5be785aaf0c6bdc3. 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/NLCK42226321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9911ac269c7587e306559b86c179402415bb03e51ac822cac3470377743c19f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLCK42226320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4d9700de5c77d39456279aee4b61449b0a1825fc0ea0722b38acf303dd75c. 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/NLCK42219222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc130381cf561dfcbaf2bbd10dee29889c3ad14d8fc50f1a1cb1c5d450609345. 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/NLCK42224952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d41629590af5a5def0a656e8e0da46354a9c3c96095a5b90f279a4809ec85f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX872258903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09750ba7fa7fc6551ea351931848fc45f3b4fa291918dba1fa8a2deb4f8d09d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2269375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32adbf4352758661c213f0b92d7faf1cc57dbed6f7a28270dfb2bf684ac720cd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2186416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5015e7a12474c452e9adfdae27b651853af66ec87133770683b270892b884c7. 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/NLCK41085918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90189f77c1a5589a6ed1767491f89756c42bf83157186c93e05346dd54ad726. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCK41078236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2a6e420e48cf23f4f29511d40cc352f903c482dea397666be90c698eb13f75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCK41078238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710a515493e6e83cea830f1b077eaa2fa8b12bb1182120d885f9ce75a77e2b5e. 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/UKNBR2000015.