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 0x1ff951aa3370cd8bee5141c8cbb68c344273479ca54d9e918bbadd9d73801d15. 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/a7836532-374b-438a-a529-65345f5c8d51.json and https://artists.proofprofile.net/proofs/artist/a7836532-374b-438a-a529-65345f5c8d51.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 0xa1426ffdb42f4c68896f6f886321c2a628f17976f35d620a57a8eb72e78d820a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ZA56E2415981.
iJäger (feat. Nation Deep, Givem Tyler Litch & Deestar Za)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf047203fb5ab01f03c61ed1eb33e0b7badf39923acf1bccad98199594de3fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA56E2416104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bef7410ba83f68b97fa43dc23a2c93f7e3107ad628e050928bc486d8f98f6f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZA56E2315241.
Sax Is A Sin (feat. Dot Mega, MystroJazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53736a49b1143426cded6313fbb597061e1369f77a3daa0144e4113918f090f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZA56E2315257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8850566b2801a80e17ad7e2dab4bb8be817d02d6f5c8dfff49dc5c8f50240a. 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/ZA56E2416686.
Bhuti (feat. Chley, Optimist Music ZA, Leandra.Vert & W4DE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2dbed12f3445685b098ae33e8914f4d52af9147212940f0024ce0faf1bfdab. 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/ZA56E2416687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8eb215ebf670e9b6c295a090f087fe90d8f466548e8e6f8fd1e8eb22cee9be. 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/USA2P2442245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ea2f5696a74503dd48859fd83cd02f88c8e45dd5f71184a4210db394e7d023. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/ZA56E2315240.
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
Logdrum Tech (feat. Nation Deep, Deestar Za)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969f506465c0469e665b0d310b8eeeeaf5667a77e180980f4612df489d3232f3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ZA56E2315244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4931853a13e4c4dc46a2286cddc2396209ae8d834c1bb684d46713cb83da91bb. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ZA56E2315251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013a16c704b1be993b683805ed891af4a6fb86650a57f56aa239568fab56a7a9. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ZA56E2315248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542756224ee93919d1c6027033837a7d72e724f206b39bc8a2dcd01d81511376. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ZA56E2315480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba33e17aae11ed81b0ce37cc257af7dc94d1a0ba80018e48995f11bb45dff18. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ZA56E2314989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba5657a98d6673abb2f2c60b8b698c19924038efbd360e9fc54dd00ac35de0e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZA56E2415922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9885b9bc6a3cb8bceb17f420f143a86ddbb80d2b4f63ae249e66f15129cf6d81. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USA2P2450102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd259a63c7566aa04d907ac407d1b959de8be4cdbb55ea98820885e14e7f727ac. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ZA56E2315405.