Sherwood may refer to: Places Australia Sherwood, Queensland, a suburb of Brisbane Sherwood, South Australia, a locality Shire of Sherwood, a former local government area of Queensland Electoral dist
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 0xd7ada065fb447f807d06bfcc74cf14bf322337f818d146dad9795a2482d23338. 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/0fa11fb2-3136-44f8-bba9-0bd7fc6eef93.json and https://artists.proofprofile.net/proofs/artist/0fa11fb2-3136-44f8-bba9-0bd7fc6eef93.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 0xe626438821286a27035310cb9e761a92da37efbb570c0f33a1cd9b23c8be2793. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USTC40847316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218e2100740cfd79825afd444a02021a33d24a88d763d3ff38db97dfcc317024. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USTC90907087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7c2748fe568010d51a2a77410ca6d1e27b684d025fc9855d09a55fb8e02d15. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USTC90907088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f2ecf89f822fe19c426ce71df9c8490296e3f906eb68b9e58a4cbed51d1ab3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USTC90907092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2a2b899a63494ff63808b4b1b421c946969848f35dee36f819edde01c8f727. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USTC90907093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95651eddf47106c74154d490e1926883747e2a05c14696b85ea3c6a5fcad5beb. 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/TCAAX1150540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bfcc94caf13bec98caee41ea81fe7e22f5060c3a8f5de339da7865c21ea70a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAAX1150543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d6fa7dd8d5f7714f486ebc897d35307071180abf7b48cfb169b82b96b50b3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAAX1150544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18219964249b0c0f0fc242eea9e31e8fdc9759afbdde8104130217c8c25ac9f6. 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/TCAAX1150547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041ac033a3dca586005e48cf95bad7331dbc68ceae923397534a047cb9cecfcb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAAX1150548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c93be8bd01f848b081f76a7a579c72b65b9a75141984593da363af7a8cb10f. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCAAX1150468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ab4d28b1631ded3baf383f321c4b846f1ebe31c9e2d18c6c6e3d23ff475d7f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:54:57Z), 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/TCAAX1150483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b849a11fb2a0b9600e1f2cd3ff2c94a68e09e47327e00fb075f65cb97b4ebf7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM2PV1585322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a71371a4f77958778809676645d0ef93b855ae448a39a99e326f5b87b4d8cd1. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:37:10Z), 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/TCACN1694797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc913497741b5695d5be740afd7ebcfba6e15dbf83ebd48e3f823097820ebe. 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/US5260709814.