Struan is a name of Scottish origin and may refer to: Places Struan, South Australia, Australia Struan, Saskatchewan, Canada Struan, Skye, Scotland Struan, Perthshire, Scotland Struan railway st
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 0xb5b77d5ff7dd01f21cb2a6d59b14258ff36de0837606462877f59bb12f83a036. 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/f5b30d6b-3d37-4166-b510-9da3276265e6.json and https://artists.proofprofile.net/proofs/artist/f5b30d6b-3d37-4166-b510-9da3276265e6.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 0xb1beaf5d76727b02570d848c8ed8f55ea810158a1f19a4f32e7f445e2fc9c3e2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMER2072242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e366dd45f6f83ae17cdb0f153545fedd5e6872ddaea626c1bfd81e6193e70. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZFZ72165009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108317ede8206289603879a4d9601b1a4fdee6fdb30212edb78b9be3e4721ac1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES72187662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108317ede8206289603879a4d9601b1a4fdee6fdb30212edb78b9be3e4721ac1. 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/QZES72187662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa7be6a54d1fa370211ef11e00e0232dc690252d91b72f378b2f431d282a6b4. 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/QZMEP2135329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48db0bd4ea178f9a0e633421de47d55176b6a29865c41068e52f95d99cbc3bd1. 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/QZFZ22280897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18399f764f298aba3bc837e95d0f22773f8feea27e6a4f043ca504e093548e99. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZK6J2354837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1434ca2ab4e8cad8d930d5281f29f03aa47bfe713d714f0b0ec3bdd193f888. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWY2404795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d601a34f767ade21f72915f9e92aaed20e5e064d823f115fc504130431ccad. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTBC2437313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe2b8762d09dbbbeceec8b58e8a00b0b6fb3179b671f07a1119a11de3fa89f7. 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/QZZ7V2423582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1434ca2ab4e8cad8d930d5281f29f03aa47bfe713d714f0b0ec3bdd193f888. 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/QZNWY2404795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d601a34f767ade21f72915f9e92aaed20e5e064d823f115fc504130431ccad. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZTBC2437313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97182cab58fc2bab785a93b4a36177fae497a225a5a0a23735f5643e7ba54ec. 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/QZHN32558589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe2b8762d09dbbbeceec8b58e8a00b0b6fb3179b671f07a1119a11de3fa89f7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZZ7V2423582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1434ca2ab4e8cad8d930d5281f29f03aa47bfe713d714f0b0ec3bdd193f888. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWY2404795.