Noa or NOA may refer to: People Noa (name) Noa (Achinoam Nini), Israeli singer Noa (Japanese singer), Japanese singer Noa (Japanese singer, born 2000), Japanese singer Noa, one of the five daug
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 0x80c53209c607481f8b1b96388af56c7a0def7dbeda32b6f1521772206fa5f90d. 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/b7522593-8a4f-427a-9ff9-e282fb06b083.json and https://artists.proofprofile.net/proofs/artist/b7522593-8a4f-427a-9ff9-e282fb06b083.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 0x3e1542aa126c15fa546421a24d1372c933de771a4b77564f50cdaf8ccbdd7af7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPC101900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdb9c7dcff19bf1e17e81a25cadab2a45b01f7c9addce4aa37b5311b1462025. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JPC101900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0568413e42cb923296a78411d0527cccb843426452fa9cc5e461a39aa7a02aff. 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/JPPO02100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a052a9ef6b8ccc17f3a62166e28a64c6b8b9f206d9622ff01feee5b70debdef. 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/JPPO02004860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efb6c4dffba7cbae4ced3234e89079bac947de718bcdd5c6d79dbecbc866358. 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/JPPO02004861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11b377644a8dde2d6957218120a44c650a956de57de1f71df8c55eddbe333da. 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/JPPO02004862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f95accd67a1570b46b502b9d852bdaf30de5a60dc673ca96c384308cfedf5c6. 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/JPPO02004863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fbf7fd54568df52c231ef6f57c960f6cc61f942f5cec7e0de0a3b1b2c1787f. 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/JPPO02004864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029db3eb1c773590ffeec5b50b3142eddcc0a47a046a2f99c84b515f26b5e684. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPPO02103763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d5b89f443d3b542a3d322f371a0516e17e1ca7690c9e3eab32d29fab837dd4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPO02200862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457e9a42cdc010f139a82faa958b07a68898f147ad81f0f393fcda741307a6c2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPO02401197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34055a89f42fade95ef25060f7639a7fd919b0a1a6f4b4c65711445b81e88c2b. 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/JPPO02401200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa67b62e6ef93cc7b82426f66baa9afe0ef99161d3e491db3fcdb7b36f72cc6. 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/JPPO02403873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b0340497af1f696e5f62e223606e45cb286e71cd52b6c33a08f712ccc2958. 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/KRA252401656.