Selwyn may refer to: People and fictional characters Selwyn (name), including lists of people and fictional characters with the surname or given name Selwyn (singer), Australian R&B singer Selwyn
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 0xbd8e99c98f12ae35703be132cf1ebd0e94099c37b1a96d28b6fd0f66400b968b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/746fbde1-f2c6-44f3-aa4a-6c32078778e3.json and https://artists.proofprofile.net/proofs/artist/746fbde1-f2c6-44f3-aa4a-6c32078778e3.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 0x5766a1a8a4241527d799a1c663ddbec0f471911e917abafed298403450880944. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AUSM00100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6482b4d03300b09db7e3433c5f0fa7876710dffeeb2fca8b8e84c4c1cffad1a1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CAQOI2411780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc60573208f122a58eb906c09bc825d1b40e8c1b5aa9f7a929f0b0ca8691d615. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE57V2405641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5d7732dd8cbba143eff3175af2ea65b2f350e131520070389f93a4c208ea7c. 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/SE57V2405642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd9715d6baeeb63d9f79f70bfecaa154872249a1dea841433dc6347f615e00f. 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/CAQOI2413301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589eb6c8a114fcd03cb04edb0f669cb064981e50cd929874f316850267394551. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/MXA3V2400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3bae70fc59e195c1477fe4d31b944b3860797e9917f56d22fb763d0332af0a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/MXA3V2400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8b6476982b205ed6bc4e32a6b75117086884f8a1056a2d666b3247d920b433. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/MXA3V2409665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09420a7578189cbcde6eb3ba61653bed0c51f1746c3872b91504239212e72abf. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/MXA3V2409666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0f5c31ec9728598a36da98dba38a4bab265a38c9fe9d2009dc3c93b8efeba2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/MXA3V2409828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266f559b3b0407bef51a0e2942203e0d9a9b464c7310a120f4fd2f6102d6e745. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/MXA3V2409829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100c2f7a0c40b7997e87b254dd0922d9d26e9548fc09a7ecc1c5c883bcffa0fe. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/MXA3V2409997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d255cf38cf47a021afc599e15d128639926b656169b360a1a48055cb0d8a7ab. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/SE57V2408777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbe1411d75949e3e1c2b901aea0df0a85179e4b51dad73476f16f6a47f2cc69. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/MXA3V2435417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531908f83007da502a999aa44c583820a28f948e60450f814ae7aeb4d9ce23d. 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/MXA3V2436668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c248abf63bb596370e1eea672e75622a8e02c13551543f4a399a16d09978e44. 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/CAQOI2529247.