Reach, REACH, or The Reach may refer to: Companies and organizations Reach plc, formerly Trinity Mirror, large British newspaper, magazine, and digital publisher Reach Canada, an NGO in Canada
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 0xb601efe9a70f4065431a0d2360264fadfe2b8a1becf7de38fd6b0392a1939628. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c2dfbcf-e6c1-43e8-ad01-e608ae7fa2be.json and https://artists.proofprofile.net/proofs/artist/3c2dfbcf-e6c1-43e8-ad01-e608ae7fa2be.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 0x37cd8f955f56770144f50588506fbe6d6e263c2c4fcefd326fdbf495ea600acc. 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/CA6D21700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645af73e74f8a491f80da93bcac98b931488506632a9a8ee54ebb96f37dd85e1. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/CA6D21700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab1e92b16a8d80f2d610aec4173807c8f67af11b00a5bf95dc4c53cf0dc7f2c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA6D21700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d17754948567557c0a359416b5488e6403d226be00f2ac0bc7d0046f777217. 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/CA6D21700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd42cd0b3ab6ecf35739a11aedcbb925d13fca7501c4669d49b614ea078f34. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CA6D21800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abfd1d10cdd81b4050b70f115ee8f8a28ea7bb07620134cc2936c91861ee0bc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZMHL2467371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5fa720839e3150e76d5910872179518f02d43a62b801d66d11565c0b1af30. 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/USDM32022913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd8f955f56770144f50588506fbe6d6e263c2c4fcefd326fdbf495ea600acc. 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/CA6D21700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b0b22cef74b4e06915a870849745a10b49149fa7e4219b7e8a4196096edc1b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CA5KR2063501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd66e4f66060f6f3a1158388d4da8ce9d36fe9b780f6557931563de7bb840f. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CA6D21800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd42cd0b3ab6ecf35739a11aedcbb925d13fca7501c4669d49b614ea078f34. 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/CA6D21800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d17754948567557c0a359416b5488e6403d226be00f2ac0bc7d0046f777217. 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/CA6D21700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645af73e74f8a491f80da93bcac98b931488506632a9a8ee54ebb96f37dd85e1. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/CA6D21700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab1e92b16a8d80f2d610aec4173807c8f67af11b00a5bf95dc4c53cf0dc7f2c. 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/CA6D21700171.