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 0x15536c55d82324ffc0effd5cda162caa1d880370668f5c99ec4e8c9a2438ef42. 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/ca2b890b-fdc3-4992-b34c-48db5573eb41.json and https://artists.proofprofile.net/proofs/artist/ca2b890b-fdc3-4992-b34c-48db5573eb41.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 0xd7b6124ca62973bab660062dd03cc5da266f71e6c9fc268387284c5382924d98. 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/FRX762312574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967ce6a8eeed0fe553729d0f7420c2c09a51232447dbd477034967d83dfc43f6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX762312575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6a1e29ba13ac1497a9259bb57c228e2b0ca3e6f8eabd3811cbc1dda2f4333d. 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/FRX762312576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2911cc612d71e9ff44e6e02c2adddbec6c202a967f9e60107c4aa24c59834603. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX762312577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c074bad1fbab15da1f684a66ee17dace4e1504e4590eadbc2db1991527b7bd3. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/FRX762312578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a744d32b120529e8f48664905eed338c14209c8ce3be5842f3571ee5b8dd2c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:30:15Z), 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/FRX762312579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85c710cec5e2af1615d995f9c7fad4d07df0344943d184b8b083410d44a2767. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX762356676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe679cc53320134ec57bac5e416633a5497fdc2faa8f13c1c3bd26bc49c244ad. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/FRX762356678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735e47d832a9910690763fc48f3ef3e4cff096b334d99948252671298c6ea5c7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:50Z), 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/FRX762356679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75c3c1124fee8d13115c7af526d227e33432c2a766e5edb89033f0f32c09d83. 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/FRX762356683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a2bef912f46ae99a51e082cf4a3cbc35710e45e957ac261c7a4f2ea3efe0f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:30Z), 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/FRX762356686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efd8a1138bbb5b62f593f8d3191ee5b819d3de9f0d4ae7eb3ddfc9a1264e0ce. 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/TCABT1493444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafa624cb3bfd6ac8b2714368bb47e3780e2997564314671829ac7ccfc1016ec. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCABT1493447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf141af73133beaf1187229e6383bce0be905b0b21854813a5bddafe263c7b80e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCABT1493449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366921dea8590b287f988b6f7040fe5341c14ed368ac95fb71c3776a083e8af3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:51:29Z), 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/TCABT1493451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e10bcab37f73c62003664b059ab785ee2ad781fbb9f7696100f2df79ba750b6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCABT1493457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07560d76f67a9d0968f03d10d44cb81bbbbdeb51687dc38ee4126a4a75a84a1b. 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/TCABT1493458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98124f81c445999e877fdb18c41ca215a7a5be02717206662755592f7705630. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FR96X2244328.
เสียงที่เคยได้ยิน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33409483d649402dfaf6acf5e25fe188409378e043d96d56666a6aec9464f08. 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/FR96X2244329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81588380f7acca0202ceb2236076ed590dbaaf0899c8f1b2dc55f9fd766e78b2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:51Z), 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/FR96X2244331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28663917fa2345087f9ee10ec46acfb04de5103cc9adfcc731ec0610d8764a66. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR96X2244332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a96b7e0b32f23418246784136e574cec9ba617c03fce777dcd191be80601bd. 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/FR96X2244333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67731f22f864e50ceeb0eba969101746d08c81a5e2e22bf9cbc553a47e0af4f7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:22:45Z), 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/FR96X2244334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf137717b1303995937061e61ece42227eb9deddeff876af3ecd7543c395e7a. 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/FR96X2244336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf941b26a9fbbe4a781899f23395ca74cb3b015238ebd5d72e33c5b29d60dc08c. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:43:54Z), 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/FR96X2244337.