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 0x85f679d2c2db25633b90b18aec813e5330c6962e2a6f440518ee3b8732860c3a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/918ee097-97fe-492d-bca6-d9e5680ff0dd.json and https://artists.proofprofile.net/proofs/artist/918ee097-97fe-492d-bca6-d9e5680ff0dd.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 0x117c6cba3a7add2a0b4f940d44d61155fb31c9dc782cf0f2c60b39840ce1cb91. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPP302000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fff5df24775b1f3c4c066ce7616dcaebfdefc93ac06bc379a031d231fcd0da. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:51Z), 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/JPP302000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211d9c2b017bffa96c72c6422381b0e104e288575ccee8df31c4e1bc1b331a2e. 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/JPP302000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f531d269080b78094be9002a1f9686ca234990cacbc865a4e0ae8df4e97cf30. 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/JPP302100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecbcf9c24b8728250f784a7a80ae1ce184539440d854d46f00c3ab3134e6362. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:29Z), 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/JPP302100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d3adda25a9d02fc7a3e8c04dd672bd436d0b0db4221fe5ef902a6fe3fa6f30. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPP302100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d834f431bab2f573bddc129b81f0a56754896d9326b5abf6c691c33742d7308. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPP302100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a2100458f6c1c0769df5b024315f7848ef6150f87cfcc797af1d121d391d94. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:02:51Z), 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/JPP302101792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2d4120e32094daa254bcf5bd91c4c4c150ee85928734c84a086db1204bb9e5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPP302101793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c61e847f4faf86e77bc662420646acde36d9521ba7cece395b5e976a98d6a08. 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/JPP302101798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f974e912ef985386d00ba6dee3c7bd5f2435104bb6e310301e704289650c84. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPP302200233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd795be204cf9b019bcc4245494b27b000817e3ca4568397b44e699e35d9d8b1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:20Z), 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/JPP302200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66de0813df49c9297dbf6e2f1ce3914f09d4a8449bae594afe5810fb234d94d6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPP302300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655d66595f149c83d0eeafd6953e164e4f9cbcecb15bbd8a289fe7946d6c58ae. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:15Z), 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/JPP302300441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618e2951aaba8c382cc50e65adb5f0e2c3d5ddcb2aff303f8ea3a4ce63f874ae. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:44:28Z), 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/JPP302300745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fae09e97ecd7916c570eeefd98fd9e93a3d6dedb7054161853cf4478efc0956. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPA962480037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d849516c928035b8e4a31d4b7655997eb6bf5c8c9efa4d88679b1d73b17faa2. 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/JPP302400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae90aaf098ca3215e5b9cf3f13afdad4d6ec7af11d7f4b3beff5b2b467aa421. 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/JPU902401790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b5a7304dd4bddd60f7ab2e04fb289630071ec51b967f88567f51392ebe70f0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:53Z), 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/JPU902402763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4add30506c8a64ecfb291f5bfd24b1bb8097d8c58dd975f02544c2cef1e8fcbf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPU902403833.