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 0x737fe68e0ba3097795b0e9bcc6c40366d26dfd1bd80fb0692d44eb84ac0a782e. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30c5ed4c-66f5-43cf-9329-162c596d0906.json and https://artists.proofprofile.net/proofs/artist/30c5ed4c-66f5-43cf-9329-162c596d0906.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Eudaimon (I Am the Moonlight on the Cottage with No Roof)
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 0xef43c8c07bd4d742b47593f8544180706918bab2a6433795c752a945e5c6567d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ESA092401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a69c9ba37b8a8627573193846ae77a3bab0060a5c0fe84a745f3e4bd4c6f85e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ESA092401412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f053231dfaa232acdeb3b1384e1002c958ac5c3b85409bc08e7a2ab08879243. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ESA092401413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be34d33acf7d35941a95d5fc54a6dece328a1b88c1cbca17491b14ad59b09fc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ESA092401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22014fc94344b3957cdc9350e7d94d0e7f06dcc791a7c24d5a72263056fd8d8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ESA092401415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f2352814c6962ed10f943d917e9eeba9aaae27014a9ff97c9d60fb2304417a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ESA092401416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2a4cbbcceb8c9e0a7cc7abb86c5d0fed468e13125989740d1ae350825cff00. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/ESA092401417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06667d47a510d0466771ac080be9c463d95c27d8fa43261e517f6b8d9c56318d. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/ESA092401418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf84c4832bf7e9116c5761fb89a913a732f7fce776e018237e7ffbe44520120e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ESA092401419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4974c70b2a700d6f27fce9791d6f422562881dcf016cebde2ab57287cb43e496. 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/ESA092401420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa4b0a2fb7b2f3943038e57690b1714b936ed43cfc4f615ced995b7686830b8. 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/ESA092401421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be6dc19bfabee83130c60379732330fb5dacd0f3bb1afa0f87e40853610e6ee. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/ESA092401422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d8eb4359cca8067caa0c31bbd0518f51969518208778e653135d255161aa2c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ESA092401424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c97f982a0dabc329304a89601015d401ab492d8ba072bbff15e2aa0ab531eb3. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/ESA092401426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1960098c20b79bf6bf558863e3c5efd8493a9bfafab3a9fe2ee5357a0df0332d. 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/ESA092401427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a3414f04c0db3e333e72d0dc97db7b853ffb5b27b078a75363c1108b17226b. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QMDA72359416.