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 0x485c20adc7fca214c63f939ed12a169b839e91f03ce4189491ba02d5cacf495c. 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/43388598-de31-4532-9023-00eccdfff28a.json and https://artists.proofprofile.net/proofs/artist/43388598-de31-4532-9023-00eccdfff28a.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 0xf7fa980e7d9e5c0de9e1cd66c1536237afed09f75ec676e8ce316f40427be398. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBBRP1761303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1106ef7426b92baa1c4a9a518be591eb36920cc923eeb1a914ad6750a79d2304. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBBRP1761309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eb62439814e48b98e8bbad3765d31a2fdffd48c0885a425e053cdb54d0ece4. 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/GBBRP1761311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770df7181e4161034ec66688e5c7488e6e626f35af6e61e9e36aad3bb9b759f8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBBRP2000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bfcfdf090096ed51b99cd5211fc3a0fbc32dd4b28eb251c21022c3730a7d7c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBBRP2200671.
Caught In a Wave - Jas Shaw 15 Volts Mix 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafdf2d0d9c8537fd381d196b1cd18f106701b4eee6e80fd7283c5d9109e2d3. 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/GBDNH1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b23d4ae4099f45d7ba0ad803c9225242443ca01a4a08819d0729e0a3227a0af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBDNH1800065.
Caught In a Wave - Jas Shaw 15 Volts Mix 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb3014254617d765c8ccdbfe954f7ce6e40fe1c67ca2553c0e5cd271a020561. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBDNH1800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a59790e562d752de7325a309f748471c96237168b38706039d9b027ae5b346. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBDNH1800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e28c9bddd6a2cfc5caa7c96a21d89f907f2180e36a7056218d2279b00cdc65. 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/GBDNH1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49935f953550af81b2282b8f40194fa7ecec28bded9e1735dc0d70c2ea606c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBDNH1700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78281b5ce98c4e4db60b96a4ac91825147997d087b4939563c10c66ada3eabc8. 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/GBDNH1700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a84e7d8221ff243699f4607d2f4d13b7a2e46981eb4845fe53e49ecd83edb99. 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/GBDNH1700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462e9b4abcd52443c459723f8c8b3b5402212178ee3a3a9674df9782f7178b9c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBDNH1700070.
Sleep Deprivation - Live at the Barbican
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea657f30a769f9a0c307866d2799c7bf1fb5ce2ee8595e411d5ceb0106ffba0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBDNH1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3112271a03aebbd8151dd45b1ba49f962bc82c33dcb2d435870892529612854. 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/GBDNH1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf10dbeab058464906985abdce55061f2c328afe1ef7b561956ef590d111586d. 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/GBDNH1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe19bb675697cb85b18ab5b751a82f8d45fdb488fb61eccdd7c6f8743927fa4. 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/GBBRP1761301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6496cbb947b74e1f3485968e29e15f65077857fb27bb6c9d2ebb1bd53f7a402b. 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/GBBRP1767301.