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 0xded890f504c97774d89b71fecebcd7300de0670e50fdab40c16cbfe488db2ad2. 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/cd000dd2-8737-4c52-92bf-54f4751df517.json and https://artists.proofprofile.net/proofs/artist/cd000dd2-8737-4c52-92bf-54f4751df517.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 0x63e25cdc84c6848061ab4c3db7edadbe3fdb20125b509230eb63e9d70b2dfc11. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/NLD682004690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f18abf5c2edf4e8eae7b28f7cc05057d009052e65d2740d1eb45271b1b8304d. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/NLD682103675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0d5048c7d0a4904cd4bb27147e3ccd48e9f68129dfec5be1bf032d98d3a0e1. 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/NLD682104718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5f66a38916ff1cd6757533d7f5d0b67d2e1f4c2e1e4e9aec6b5d60bbb1cff. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/NLD682104719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98d041db6e47361e46d5fae552c3ff828a718391590b57010fd682a2362d355. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/NLD682201484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d999f76c8ddcd0367fbf6dd924bdeb349c093a1db9e1ab3485348c636340e93. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/GBKQU2280874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5b7f35aee7aa19ed0ef4cf6f396a665830eee7a8564aa59a7ec544dd19734. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/UKRMQ2300833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb38d342e454762038d888150fa8eecc82e6ad82e610173bb843bf5a8073bed7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/NL8RL2400679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184741bf61f755c0179080febafde383eebf361117b2d8cf7af08e5b4997bb09. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NL8RL2404842.
FYH367 - Find Your Harmony Radio Episode #367
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9711538fef3f1d7099195c90aa132bb0962fde3f85155ffb50788efbfcef0183. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBKQU2378853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918e56521e92d0d1f516a1e8483283f4f1361fbf60c891eaafaf0566c5547571. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLD682003463.
Sic Parvis Magna (Yoshi & Razner Original Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323b2f48e757a83c57fdd29bb65881626c08e6b50a06365a7967b108a95d7463. 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/DEA312107875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95d76ce443349813058360990f4a283b3e7e3a860c869cb4b28bd16ea61bcd. 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/FRX201930483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914a0ca7e0922b7f58a3df8cf64cca43d17a936a21b91e6dead4d031545a5457. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLC732000646.
10 Years Of Suanda Music - Mixed by Alex M.O.R.P.H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd1a1b05a7812db1caf43ff6ece47fcfe2949f25a2e7698fd6d901b3cc53957. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBKQU2414988.