Offshore may refer to: Science and technology Offshore (hydrocarbons) Offshore construction, construction out at sea Offshore drilling, discovery and development of oil and gas resources which
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 0x8869278f26b19ffe02d323750f6b14e7f79454ce488b375e8ed0c686483402fc. 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/15726f69-5f4f-4e2d-ab46-d46ab77dc3e8.json and https://artists.proofprofile.net/proofs/artist/15726f69-5f4f-4e2d-ab46-d46ab77dc3e8.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 0x75d12f7e60a99956d6120a0a4858023712963bec303eac9caa4d83db22aa9ed4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZZ782478924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d98e459d09cfa02cbf18bf32199601cb995756224c870328a3fbc0be458b3. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZZ782478925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aab715b5df72fc6fd81ae9319ff13c189dab41979e10b8f8eebdb81e760fa3d. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZZ7L2438692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c28ebf06f5d3c22e9ca2e2d9b8816fcc5407fd2328e6b4251c8509622a6fa9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZZ7R2474698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893322d2b648fd585127bba78f4b1bcdea3db3ed3756c2322a5445f0712cbd42. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZZ7R2474699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b56260503434f1d967d71231bfd2a710e0f81208d2b63c63d142b72f1f461e1. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZZ7R2474700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f78cb5673f991be4c3b5467569bc37bc48db8958704c8eb91770850bc4fb8e0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZZ7R2474701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeca223184ae7c61dd34602369c06bb5f49b4df45f31e944cf78254fdcc98fc8. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZZ7R2474702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77366e7f21554d6d147c8b6a05f95fcdde8447b8b25396eecdd68b89a7ef6512. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZZ7R2474703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf96935f90189971928fca85a0293bb2d84bf4ca0152c1f9fd6c7e143960e9f7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT3EZ2414945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb0b03caa8e14b686c6f589009d1943725c8ccf0927bf54b11c4d19576a36b. 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/QZFYZ2573264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da158520499738e1cc0722c79bd011a4ecfe5f742829b6ea1b919a605e908b8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZFYZ2573265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad293123f8857ce5b60b7a6f3bb49e97d0eebcf33dd05eda505176c7161bab2b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYZ2573266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0bb6acfd85404d96444f0886502025ec23bf2a693f47869c888d844f74f667. 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/QZK6P2582748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae18accbfa22823ad45548332f9ebc7b532f797b3986fd80613ca3274c46fec. 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/QZK6J2526622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acecf5d01f33ad27e9c05227d31bdc2c996a2bc3e0f601b6727f6883bf98234. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZK6J2526624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715e1afb8a758d79c35651d46aafe50249ff1d69a0dc20fff8c2ec83f6c54f88. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6J2526625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26349cc5d0a00e6ccdfa94c8f8035564c17bbaa1dca2c5ff2a8a1b51ef476761. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZK6J2526626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1b0466debdbbe0a581ed22d31e2820a654aeec4c28a7e8db917a98272eb473. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZK6J2526627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c0e620eece9c59a5a01a397c6a48e326c38c8b2f399f0390b116aebe1085b4. 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/QZK6J2526628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac3e23f809937cb4be5959c5018a826597fadb0b5514c2a568babec0da0ffe3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6J2526629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67b801cd3b7d3dd616b643d0a550933271377068ad4165f54e75ce17fc0baaa. 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/QZK6J2526630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c135fdbf6c226105a29c5b35a886440b73548534dbdd7c00fd1bd668fe386. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6J2526632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bf133c304f53bd11717cc8c53d5891adeef9841e7ad91450121a6a89af7d85. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6J2526633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c7d31929c8996aadac4963e0e219f8b7055edc831e7a7696940fbe03b5112c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6J2526635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729a0d45bbc01936a206c6cdd25c3cb6b87fc0c9fa24f7b4bb93bf0c38a509a3. 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/QZNWQ2535170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda2544b0e57c15906f601e68b8a3cb158b16e54fe83f6f88387054d3eae074. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QZNWQ2535171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138ddd7465eb9a583f3845e6c34a77f0a9fdefefbf28a6af3fd4e4696fe98b78. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZMEQ2566139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e9333349fc0b6e6081bdc62d2fff02cb17afd19b3ba593769d38c24149b14c. 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/QZNWQ2535172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12457f97a4b5d70cb3d451b71e1cedb322aaa661a87803d76a0c31f4bade3d2e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNWV2555006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46b954b3e3b7fb6cd4994939870d19dab4c16b5b627fccf308a442adf322086. 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/QZTBA2527773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadddcf64362dcec1b01e2c46bfa184c461d08e6885d9c5a9bafcd96a6a76096a. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTBA2527774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba1f2971229b09e91aef77d56b314d636536f3edd95407fb57450f5f5f021f1. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZWFE2560020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2609268098b9e884463f278c7801f9f8ff231b4e26798530b42c0adffbebee94. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZWFE2560021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a63671be64a3192fc823390354adc75788086d7f78a97076843f5a1b0626c4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZWFE2560030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eb15da8a718d473bc2f8c76b6ffe16702f3f60585a5f3f8aee3e1a0b79228b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QT3EX2500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4058d67199ba8c515f0781c434e4b670ea900f931af90414bb5ccffbd35669d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZK6L2402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619bccc3c55d2ea8f1998c5a27b04a400e8856018c09703e0c02485c0f49e858. 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/QZTBB2448569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099b63cb280c65159259d9ad4848c3cbf5652b91c69ba05512d0e2dd04fe05fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTBB2448586.