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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d387065f11cee5918ee9fea749e5422fd2e5fde113ebf625996822a34b6fac5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/793cbb7e-0e4d-4ce6-85f1-3b8ba3a80721.json and https://artists.proofprofile.net/proofs/artist/793cbb7e-0e4d-4ce6-85f1-3b8ba3a80721.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2533a4514ce9fd986c577521d97b7a52862bab6544d76e1ff595ae4be4fb56a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CH6541979502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444780c0fecfaf433df5ab64725efbd304880af7802ba072f9b5a025af687244. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH6541979504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5577993d9589e3d22717a90a13f4a55d660029246c23f403aefc21093f00fb6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CH6541979509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4b16cce0eae8df1d06b40adee32ac97eab45d9f3ff31ac2ca4e01e58e9c67e. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/CH6541979716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb260b0f6fdd0935264dc4c6556e5586dc3839f354372466d43b9802d500b5120. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/CH6541979717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd240763696a3b96a9f43a850b3e16f6c9818fa127e972d029ce06cd872366b41. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/CH6541979719.
Hands on the Sky (Living Room Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ee56fc0f6a2e26a5d8685f5e2affe87f34ef6878f37965b0b2bd54987226dd. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CH6542364721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce3e56444f8b9683a44d88ac10b7cd4615ec5e8310f623c6070ec1522893497. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:40Z), 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/CH6542425361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501a0066525bc87f7614144bf0d2297fe6aeb4f1c266e6cb567c75f8e7a11569. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:25Z), 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/CH6542414382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11054b0357ac00e1d0ae9ef1f295989928f0e0f7a341bb81a3ac25f3d272ca50. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH6542408939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb9ed53eddec1a79cf0f747cc981a26ebf886bd068d3674a78fb95fd82d74ca. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:34:56Z), 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/CH6542430026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da23346c36be17fb9185b2fbd70daf960f8c8e686287cf5843e439489b4eba7. 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/CH6542440444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d48f4d0fa60f104113990eaa8f40077293a2bf4e5c89044cb577740b894c3a. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:48Z), 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/CH6542445089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0549cabbbe63b94f7a0d038d10066385e1e2671317f65ff450d42313a89b5b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:51:16Z), 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/CH6542470250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc923bb0f77fd3c1f5324a6aab095f93cf6429f4a12a0514be4638564d7af9e4d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CH6542503374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf722ee4990fdd5f5fcab5d251b99e97c4d46ba13e9d90aabfa837a36e7b40c5. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/CH6542534500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a7d5ec65fd5a09fb14d8aae2dcce1d43ffc4f671d9d62cc499e0e6e2bd43c3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9Z62500665.