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 0x93e510de06ae70d1d353942b686f268c8dee9e4c1a585128eddf9ca9f64ffc93. 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/9a9947b9-d396-496a-a68c-0449b934fa48.json and https://artists.proofprofile.net/proofs/artist/9a9947b9-d396-496a-a68c-0449b934fa48.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 0x46917cc8453cd08f898cf0fb018e72278f6c1562d10cc1193e4ff79c3271676a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRX201845320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22265e96a633eaa0e2d47704c045e1dbf33b95732dc8ad6753640e9058c200bc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX201845321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbf18b8cf174bc6691abb6806b16a0d4938e398da56a0d5ba344dd1fb9141e5. 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/FRX201845323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87b3ecff9b82f0718894d9132bd5b3232db7ee1ea56e00279cb960f92aa5caf. 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/FRX201845324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cc8138729336785178185a48994a3fe4f7bfd3aed6508bf743ca0757060bd7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRX201845325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3f00685cc883ece718a2c4e334163b2102d97bba36334d6571000e9a4afd41. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FRX201845326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4882848bb67a31c068b67ab57f4e438a7edc4273cb27acab53ac9f0c9ab503d6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:20:10Z), 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/FRX201843464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f824ec4044ce65653e9ddb2e80a5d4caf4a00b8cbd83d6abaa8cc217c8019f. 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/FRX201843465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa675858c9a8fb769af470cde88ff6c2b9461174c720041dd4d6c2fd0dc7d536. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX201843467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632ebd23cb191e985803732311144b15718fcd477d5b9d86cb1225527219abe3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX201843468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb07a8203e49113d1946efc564c40a160446f2fc34faef4faacb432767bd6da. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FRX201843470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5a608539defb8e49ea4b8be5d13a15c914c25ca1cbc6cb7478c11d728dbbf4. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:10Z), 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/FRX201843587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625021f2feebae3a14c5b3096e8c9949bfd2251ab450dd22fa90dadd99aae4c4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRX201843588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183dbac7e9dd6581a95b08bddf7a4b355c6075f8fe27eb27efe188f847cdee49. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX201843596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e6ff7039cf506f961ed71733d0e8c573e87c937bfec8b5704ce1d0965c7084. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX201843520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d24b1d6c474acfca104b684fca06f3e791a5feb1b9a6aaa40fb01cdffe6e6b. 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/FR2X41616593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723a004f499923ad2bdccb83ab0090f22259f8ae3256fb56e1daa9ca95c97345. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:42:38Z), 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/FR2X41616602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6a4bd829910b40becda89e9825e37bfc5b0c9f752ed349b91ec8e583870827. 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/FR2X41616603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ae457462ffb06942cfde8a0cb953b5e6c2c0b6e266db8f9bfdf0319380b936. 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/FR6V82608060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76598d2a403968c342dc3761f5dd75e83ec5550f280410ef8e27837fd382d955. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR6V82608061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73158a3f23e79291fc45adcd65875c72573da370dc706de18be586a59b09696a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR6V82608063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626e806854382654ebf24bc0632b76cdf88abded28e2acbe70bc396ffbdae820. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FR6V82608065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0456d57bea494da77cac292cc709d961136dd11d0bb6ab9c5f365f15aff573. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6V82663351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3df2f6d53f62abe16de40ea1c9b4559931289b3ac218a7fd8417979187e186. 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/FR6V82663355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9259d5e1c6c4e21d7ffbfa19ccf6a35881bf305310196560cacfda887480b5c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR6V82663359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f683486d3c926f1742ddc72b48fe613c79470a76d0cbd666b4beb9c0498cc1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR2X41616721.