The Sutherland Brothers (Gavin and Iain Sutherland) were a Scottish folk and soft rock duo. From 1973 to 1978, they performed with rock band Quiver, and recorded and toured as Sutherland Brothers & Qu
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0aa62c291eefaf07c4df0df996863c705126dba9c5bf860e49f90b70c4d606. 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/d0e08c47-7981-4215-8700-b3b63b9ce6e9.json and https://artists.proofprofile.net/proofs/artist/d0e08c47-7981-4215-8700-b3b63b9ce6e9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd1bea840bd45cf59c13a8e2a2fcdf5b52bd5bb5c07c686eab2e989d177a210. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:06:26Z), 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/GBBBN7100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d28acfaf5cae267a9292d5dc3f9386f204dc112584703ea3e56c5d0cedac1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:14Z), 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/GBBBN7502054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002d2c554fcdf6081ceed6b75bd22032ed0aa71693143f2282e685d9dd77e296. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBBBN7502055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639cb1010889c555b3581a84524bf47cbdb7f4fa16f6a88b85b2a739b9f2ab13. 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/GBBBN7502059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a89a87ede58e8fd09ef3427efda7fc4a91dbf10a0ec1cd3536787986a4681b7. 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/GBBBN7502060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e816e4d0303663d4e2812ca41238f50818168c46d622d20f22e27cf53c7f422. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBBBN7502062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd016e9277fc1a95f5fd508bb927e38cc456e9c63cdc38d47aae882393695ebf4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:31:45Z), 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/GBBBN0002072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4347d57a4864dbea2187bbdb09fddc92481fb0219914244098d4861ffe9b4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBBBN0202016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c55457f37b1e66ebc623ede02787b6f25293b6bfe64eb284ad05d124f6f15a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBBN7600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c55457f37b1e66ebc623ede02787b6f25293b6bfe64eb284ad05d124f6f15a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBBBN7600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c55457f37b1e66ebc623ede02787b6f25293b6bfe64eb284ad05d124f6f15a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBBBN7600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6c00d52a72e9f65068380bb35761e0851f09a106a98e017c90e18237e85b6f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBBBN7502056.
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