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 0xfc0a9d8bffd7c42f3da4053bc1d70dd2d427a342a455ea78f9faa6dfb38f1b46. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f9e772d-570b-4018-a05d-aad666c1576b.json and https://artists.proofprofile.net/proofs/artist/4f9e772d-570b-4018-a05d-aad666c1576b.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 0x9c7d8c4ea2ec83524212c2681a47002758634dd762d31a7358897a6fc84648d8. 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/AR1K22000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7d8c4ea2ec83524212c2681a47002758634dd762d31a7358897a6fc84648d8. 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/AR1K22000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd19487dcdbaa6952d6c7d2099f9ea7cf4ad006f5c4568c2ee3a6ebdffa748d. 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/AR1K22000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaeba09f5a851e9538009c6811a1dbf764046ec91d7da9a281ed7cda3158b6d. 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/AR1K22000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706c5cd2c93fdf707d017492c7a4c894c16a630d90bc9d9bd40349fd440b4f7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AR1K22000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94879014334e388fa17da7f76bf3958dcfac7f96f9ce1b28ffae635e4ae6c116. 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/AR1K22000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea235a7fdd5d4ff7822afda954431b39b43a74b00d0f7ab40b035dc961a60ed8. 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/AR1K22000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f386b09328b5f2745090dec6a4b0ebd1167afd842c647d3ce27b967bb907cf. 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/AR1K22000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8bd3f966f95409f420b5776964439e3aabe9bb36f7793a0ef09ed4aed9c75a. 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/AR1K22000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefe6e832fe625d4660c3baa1d4869928a4432846e15fb801d2f7684620309a6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AR1K22000024.
Chant & Plant (Tappa Zukie meets Planta & Canta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da5a3e38fd5a5c927d9334d8f25227e89a540cdd8232fd6337062f396420fa4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM82301535.