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 0xc68ab05cd6a82f5fdbd0aa0ee6092ae171b9401dc06524f3df179ff894b97d85. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2fae86a-2c1b-45da-9d00-c63837763d8f.json and https://artists.proofprofile.net/proofs/artist/a2fae86a-2c1b-45da-9d00-c63837763d8f.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 0x6747ab217de97ddd73a89c5cc91640b933059590b8e1adbb81e151580c29e80a. 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/UK7QU1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6d34514e20b03228cb7f7336fa0e90a71ee71f58e933b007a3b67e42952553. 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/GBLFP1940722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2873ea8ac6a16ed24d8809d883175c4559de425aa64ff0875ccdbf5ad491b7. 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/UKVJ51901009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f2d78f6337bf88b62903c0955626e63934a5bf5e56ad00d7405b791d85b6ee. 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/UKVJ52004113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3394f86989b5cbae5fc882f6ea6eb6c24893f59630b525746c03e891f157666c. 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/QM4TW2233251.
Friend or Foe [feat. Tiny Boost & Ra (Real Artillery)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a19251de8ebbfd4416ea87f0133da650d69d6ffdc6dd0af3152786fff5ed5d5. 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/TCAHR2334827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622df221f3979d97ba3c7eebb9f4bbd27f5bbdc5d7a362fd87d586e6136fab9. 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/FR26V2045285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aa37c34387c87110fbf1c8abe0173538da67c43a9f49f2f104b4509ecabffb. 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/GBARL1901417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20b345e2156ca4e9f37635e93ee9ab0b28004c43192d8e4720d09d302447c6b. 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/FR2X42232536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4fe65c14f73dcfdb26479d0dd4e4239156e03e0a9917a7c7abbe50c9e17da7. 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/GB2DY1900597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622df221f3979d97ba3c7eebb9f4bbd27f5bbdc5d7a362fd87d586e6136fab9. 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/FR26V2045285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36715efc005927d01c40d9fc70ba254ebd33b6cd8f7b93a335d3fb05fbea07c5. 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/GBLFP1976567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bdb9af72b8ddcc9bc0b2e10aba4437bc5d3f7e58c2c232f7c12b62eb9e7a9e. 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/UK93X1900194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbcf02b58a27748ce20589eea1b23121eaf215aec3b28868d20be5b7489cd4a. 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/UKVD82020007.