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 0x96ac78b9ee3b1fca977a4adb413d246b3df280a5f4ed61a49ef6d2c242829134. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42663f2f-e25b-4786-a454-dda42dba57c4.json and https://artists.proofprofile.net/proofs/artist/42663f2f-e25b-4786-a454-dda42dba57c4.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 0x44911460b702bd19e7fea620adb3f22ffec47a70a712aff356e5ea28bb071ec8. 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/GBWUL2043584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5814222d13e476764ebb8a574bc2dc13aeac526b668e438d1d2226f1680bfd. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/GBKQU2191981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dd14d1302d933bbbb27a88536b477ef120d9ca8e7e45f9f5a56e673f0ea022. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GBKQU2411473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f60de269c48cf56c0515131e7ad0c05d6b152f356fef468a7fe3da906d34f09. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEH742438519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a4a1a985b2922974742f532ea42efd8ae10cc89c6c4aa8c2ad5f98abdb7ecf. 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/DEH742438520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d7a026eee6d777c8d4debb7616d6f90c31b3ea34b278ade6ad75d13da4005b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEH742438521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fa691445c54c5a0b04cae9b8b75a30e7936b8db9aafcded2a4087068f7698d. 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/DEH742438522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8796cada54f186f3d8fc1cba4e5a5c55aea7c6852ad6ec2336f6ba448c68bd. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DEH742510815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b9a45bb32ec4786a6cd218f110229044e9982a024bc6ff3d6ee3fa2a3e9eb9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEH742510816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfddc1ae9dafd653f532f876c09aca44f33299077314d60739646473f0c07815. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/DEH742519451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc513215c3116f5a61b20ba11906fb30ad8415c433470dd6dba08a821695daa33. 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/DEH742526140.
Foniklab Records, Vol. 4 (Compiled By DysFonik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43259f33293d9866a1f07a421704da32e6f54322ed4b13de41299222522c320. 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/GBKQU2432659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254db068f3d05d31ef07575ee438f25688927172b3f6f317607daf55c6225654. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBKQU2209901.
Foniklab Records, Vol. 1 (Compiled By Dysfonik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0abee7ac646efc61f63c643a768d85c326e24db5ffe7b4e1a817f58fd035d8c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU2254512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedadc070b2d6bf63f8c1bbe2068ad84c893771799ce77c8b85202d4070a022ca. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ZBRRL2300013.
Letter To My Son Ndlalifa - Deep Sort 95 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd0320fc687b32c873083e32a76a83bfbc8ac62d199b45d56220af0c671c734. 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/CA5KR2528130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184a4a44a06a9f2d06ccdc1fb6ae1744a4b6ca486ca1c0e17648e639c6c44278. 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/GBKQU2307751.