H1, H-1, H01, H I may refer to: Places Interstate H-1, a highway in Hawaii Area H1, the area of Hebron controlled by the Palestinian Authority under the Hebron Protocol Science H1 (particle detec
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 0xf6a96c73cb6048aae764aca35512d839eaffda0ef7d40e72859ddf96de63bcf9. 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/36346e90-851a-4158-8577-4fa48654035a.json and https://artists.proofprofile.net/proofs/artist/36346e90-851a-4158-8577-4fa48654035a.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 0x10add3024b070093a3d16db8f46d30104d413b9cff574a01c5c7c1e1b6a086f2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEZC62029947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86923ffdfcbfd9f99cbb52ef52e2ec1f2d3517565251f9083b1ebc9a197e74ff. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NL4NL2154801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2bcfe3c54c240e151bc4c9edc304bb37270c5aae92e7c4551777e88f437325. 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/NL4NL2219061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171395cadfec1b1e2fb35d42c765ed3f293f3c0a02cf19f8ed2aa812c708da4f. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/NL1AP1980661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c6942f529757a73184e5f5776ca8f67248aaae9183f47824d5c9b4a244a03d. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/NL4NL2137171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed700f58bed27fab40f16d4248d56f3de9573adf4dec145aedd33decbb7f13. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/NL4NL2137176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a66bd6502c4f450372f9a4de9b4953a2940b0979dd8db1eb1025780551113cb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NL4NL2137180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8af9281edaca7339fcbf1674d40c7afb1bea89768d49fb0214eb3932d901abe. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/NL4NL2137186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c83149d54445290d5923ddf21bce3e5deb068d78548bab4827dcf5ff9adcb5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NL4NL2137188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3730c13c6886ce5ec31d7c349598d9a8b275a8e2ef379d17b732ce4c408c98. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGJ2294865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6efd32e9d0a09408d1ee94d257ecd069b67461f65e24bded61579a082f059ab. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAGL2253817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a9697a0ae2e94b2f261d83601254856fb77bd96e0819f83aa756fb1c9c9dc4. 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/TCAGL2253826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae770f10ecc054af8a904ce561e1c3bc593d91451d2018daa413de9160a1679. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/TCAGN2222103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba38ae5c702125d73bb9f81906c79a8d638976810829322d7224534ed3d90d93. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/CH7812344776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239d600ec79693de578a1a0bc2bcaad322b8c63a82e4a5960aa7abe6fbbb5669. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGY2349317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915dc94544fb91087ee1b2b8ad46dff14edb56c487296bde8b6820ab73afb6f3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAGY2384912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e11b59a78dcbaba07dbec64007d35452cb02d4dfd240bd097f7cab9496334a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEUV72300737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad49449ebfc8c8efc1a177056c319c374b960c726dc355a1dfcb736e4785e86e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHE2373698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5f3594acdc1e30134c05c4f033ecb5005237942296022826e083b15e3018c8. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/DEUV72400420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350144d9587216cff897626c1e206c3bc4d9944499ca8d4e97d735d239e17f1d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEUV72401070.