Baccus may be either a given name or surname shared by several notable people, among them being: Gabriel Baccus Matthews (1948–2007), Liberian politician Kearyn Baccus (born 1991), Australian footb
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 0x438a6738f603c392394ca65b688a556c37cf14d72faa14e8518a4919e0ab9cd2. 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/2141a3be-b2e4-4df1-ac15-035bca5d73ad.json and https://artists.proofprofile.net/proofs/artist/2141a3be-b2e4-4df1-ac15-035bca5d73ad.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 0xb114b26675ab6ac90f3dbf5dc2c37e056a00bb92d958ac97b585b833a1756837. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X2231698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081eea3a43eae90c706c50163d979b2c0c7c40c574a265ea150a1d75f12896b0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEY472275044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd631855f12c3dd2e2fc1a0746fcf543c94317d39300a0ad6a0b74f932aa830. 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/DEY472275043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca3713a8999d3d3f10b5cee65c81c31ab65dd3e928aea7a5f4193155b93d9f5. 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/DEY472275041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1473c070e2f67ae00865509ec4eefb96271739bb7145e3a4c22864925b57ca21. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEY472275042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce272d19b42a9309a64fe3a257ffb32531e6cf50a8f33a1c217770b2fb21317b. 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/GBKQU2282999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce49d270b29a3c1af8d5e86e1e0a0d610f1b2312151b981a7bf7486850953b. 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/DGA0H2302628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9812565a3bd3f55264705a4912ef99d7d3350d9e6e432bb00368514b06c6315. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FRX282402090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ed0f606ca7e1439c288b1483378bd5e4457a1a63fd245cd3b5b95a411f544c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA052405325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bad33aec3ceafbde3ed1a486e67818b7ca72121a5fcc4e6f0a37fe5e9709cf. 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/AUDCB2500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bad33aec3ceafbde3ed1a486e67818b7ca72121a5fcc4e6f0a37fe5e9709cf. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AUDCB2500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c40d44939b60ea3da4b8587a3b8d5481e04813f4536f993a5d3ddf708880522. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2175152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98981212b7af64a6302c98b9f8f860c2c9013f929ca9af8b748d7f6dc8f39e8a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCAEN1961401.