Bruce is an English language name that arrived in Scotland with the Normans, from the place name Brix, Manche in Normandy, France, meaning "the willowlands". Initially promulgated via the descendants
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 0x45177e913089b4a8c05e0f334c7204613c09cf426cd33d88c10dfb69faf87f50. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9673e6a6-0ff7-4396-8c2d-46d338baf94f.json and https://artists.proofprofile.net/proofs/artist/9673e6a6-0ff7-4396-8c2d-46d338baf94f.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 0x22db61e70175f477e3609a9f5b3ea97a802becb9bd038aa8eaa19c8afe44502a. 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/QZK6K2068396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b450b5f496d3c25df2b73d9b30eecb39ee2fd6b2a7819325725fbed241581b9. 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/QZK6J2061732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e52eb34a47c1b123a11120991ec6b4f74bb85619ee710d8eb74044fd1011398. 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/QZK6J2063331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67036a62771d7056b3eadcbff8362e3ad58f5019381d390e0d9cfaab5e8d75e0. 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/QZMEP2082192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065075c0f0174755ee80b41d81691e6cc29bce4707212873ac0d6eace2f30a7d. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZPLR2042900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23adb1210aad5617eb06126b55f8ce6aded24b4ada3404ec3961e184a6f19c4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ22140655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0966f1403ccba9f26505409253278c35b193947375a53dbd64339337994ca5. 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/QZHN42196770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d6d57ce0922a24877c856f5d769b8b7f8781588933882aed4efb33caae934. 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/QZHN52186099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf26e87144077cbaa662e7314a87417e569576bffb227cfc10472a1a1ad27c1e. 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/QZK6Q2160043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c53b6a1cdffaab0c8ff5c1340f385621adcfd0aae2d48c5bf6d0a603fe001d. 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/QZMEP2173545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5247f6dc007f97e33d5432b24c324bd93cef1a885c124e8f3159d5309049da78. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTB92287985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177c0240ed4e016f42e9e65d6cc391ba780ab0d99468a9c7007bfff94ede27c5. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZFYX2342716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a79c7d137971ff8e16e7ec22f0f804af20a7211f2ea7dc2e7116e0c52d03dd3. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZFYX2384757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1dd2ce4857c4118127f66a7d9479c276e400ed7ba81ff0dea0a131b10e55aa. 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/QZFYX2391833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c56814a2d42fefe7103ea622f49dff74661840511c9e2a7c307c02ec3dc2997. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFYY2347334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cad609f523062be70b72617786feefcfebecab51c03766e31de1df1ac95fa9. 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/QZK6F2323344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e5e98a5a733df350e1939a0a5009150b31d16aa96fe4d2e44b1102f31458ab. 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/QZMEQ2325510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd895e45506484540b486bd9742d8dc0df1fffdc9619f53e96eb3d8c77442aeef. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWT2396690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a75192c6ed9dd4eb134648c40b032724bb23301bfaf7c276d0a96bb001398a. 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/QZNWU2310946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b2944a10bac35c7e16f8c84305f4ae3f17d43ae5dfe194d29267987b7e1bce. 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/QZNWU2333437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454aabf620b40815bd341241fb6a395d35a4ccf8dd58fb97d6ba4126884f486a. 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/QZRP42315682.