Tosh may refer to: People Tosh (surname) Tosh (nickname) Tosh Lupoi (born 1981), American college football coach Tosh Townend (born 1985), professional skateboarder Tosh Van der Sande (born 19
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 0xc8c06680a16e43ec57716e9698016832db7fa65524151f8784b64aa0dbcccb85. 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/a0fd6642-215f-4cc5-93ca-a523db5c2783.json and https://artists.proofprofile.net/proofs/artist/a0fd6642-215f-4cc5-93ca-a523db5c2783.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 0xdf298558b99387128c1f531b1846922247f9a2f90c452055b586aea928980c45. 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/QZMEP2049391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630a76faa131fb241cd746fe9064be96fbdf3c154980c542e7e0b98e6edc18c1. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZMEP2049396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80835a7e42414f2f83575a9e9eaa2444d6d95bd7f0c155be73a6794a9472e4f. 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/QZMEP2049400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a6c1c2020ec459c23aeead209165ead600694f69561ac1f7f88788982d9ceb. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMEP2049401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c1b7b0f570379de82fe768ac3399518f020dd843c01c1a8c1b3c2da7ed45dc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEP2049403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605dfd8857ad1defa455878b8273321050074ae1fa678b4365ccc3903a6f13db. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMEQ2064721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc090efddb3c14d4bdbeb101da9275f45004d1f0be0d3e01e8f3a87b46885c883. 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/QZMER2064437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578b00bc7ff1a7ee530247c254cddefa622241c02d52e2f24bb0bf091b266981. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWU2068021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4ecb7f853f9dd8d3af6f29700e6c8b9c6dcf90847b034f0ead193caa76edf4. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZFZ22117743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92324ec38b0f27df3aa943424fe95115f3a9cd2be3a46b8e41f447d492c385a5. 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/QZHNB2121156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feae3fefd1c3ca6d4126d57d0132f3a89c16b6d68fa8486257c1cff5feceddf. 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/QZK6N2557886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6109ce0871ffc8f6ae54c64e34e124e842a3c76dd22b99574a19ff24e1a54e2. 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/RUAGT2211968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773ec5c0683c2164b325b647ccfa92c9e59afb3343dd68a44903441f4231a450. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6J2378444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5fadcd131b118be8526471148a3de9ebbc331950915a3b45f2ff179bbfeffd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBD2550326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56017d4cb995705305492747982ed6c806006ddf8cd8526911b11aefcb20cbe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT6EE2561463.