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 0x7468287da124bce09c263099a893cec47ea721d3521985be5f2e5211be01e8f9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2afa2a07-b79f-4d63-b3b9-9ceb43429f58.json and https://artists.proofprofile.net/proofs/artist/2afa2a07-b79f-4d63-b3b9-9ceb43429f58.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 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 0x68ae776ae1766b103338c658e4450711a6d4c5912b944d5389245dbe5e17d631. 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/THE071000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f23f66373337212513009f9e6d318c053e1a8235ca98505c34905cb05d89f5a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/THE071000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9004b99c43e43058ab5a91ce3345469511ffaf266c5cfda6913cb42e9790b5c9. 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/THE071000054.
รักต้องตอบด้วยรัก
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab7d92b218097f0650793a60237b427c3ec157ec4182fc4fd5575fbb9bfdeba. 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/THE071000028.
สิ่งแรกและสิ่งสุดท้าย
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a68066df1cdec552b230c3726598435895e723568647411e0969584a98a2fcf. 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/THE071000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18c42ffb05ff3b03da84da8070fbebdaf2a1079c24991b99b954fcf8becd893. 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/THE071000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694e47df199c75fd0f875b4ebcb1e88ea2757d967c47e538a6851d56e8245426. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/THE071000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be6a63156d1273add48e349ecf3575aa5f00c233c532c67f7e053ffc1a72c54. 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/THE071000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f40a856c087fb1452261196b34527d698241e4bd20c8a69182f21eceea86cbb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/THE071000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0970a6096f24f48aeed6f3adfec030375c279be63ed1e0ff35e7a926813058e9. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/THE071000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa5b299ebaccb75fd202fae805c7809216312ddd4f0194f42115deeed6ef2e. 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/THE071000077.
รักที่เธอเฝ้ารอ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f143377f2c7fff0955c42042e0641cb846b3f0770a1eb72eb5f8e3bfcf09764. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/THE071000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aea3f04d3be293ffb138b85ca3a1565989b21d86ca3d39562d7989a09c8e65. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/THE071000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1821a4f1f431a9d1e3c011e791b6032c84031335f157663450ff2572e00e4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/THE071000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e0a6021e79f3cd5cfa01a7a3f6704b63dc9061647cb4010d5cc44fb4e82d6f. 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/THE071000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7cf69536e9780663e49fb6e0630223e952e36e419a09ac62d14fffd3040643. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/THE071000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff48eafb98cd6b3bf08f64fe5827a2fca455e5a687cbdeddac1e0c8617aa56c3. 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/THE071000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8251b29d76a35fef5c3eee2d6b5972950720234844ae5b27ec81f8ed0467616. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/THE071000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b778d2bba61a4fe46829df7e9cc19f3e47ab3e338bc88a7674b18fe9ba9e5bd. 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/THE071000022.
อมตะ ชาตรี นันสต๊อป
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb142255dc85a2f0193c3ff413435c10798cc36aac0811726cd2f04b79d90b1ce. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/THE071000041.
ฉันไม่เคยรักใครจริง
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc55612c191a879d175601696ce5f436058c054164c2bcb42e6f0085a89139e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/THE071000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25216d3e7ffbefb6fabe6f400437184cff1de52a18bd76ef78528d751774d01. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/THE071000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e0cd698070b36f8f4c61b7f2268795088c2ff35eea37b363229dffc54f75f3. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/THE071000008.
คืนมาครองรักกัน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c968200cce7014afa1bd4f056f152eff7700ed8a4f44ca40b7152b84ca9ced. 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/THE071000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd7433aff2d811dc0956564ef7bc2d263d2668cffaf90db4f7b0aa6904e0838. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/THTLM1411720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31addcfd1947f41ea0262e470f4eee90f81812c9418bf066a44f78f1800d992b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/THTLM1410623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdf8ec4361c9a5b00712a5424e43fc83f3604b6f141f3d8f2c57bfdbac21f60. 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/THTLM1410625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae12f1ae31b3cf8070874c44627da0f7b13d0cae65089448fd414215c13d31. 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/THTLM1410626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79791ab546f07f8f5b891035d3ec82fcd5d9343554a0782be71c478d70f49e1f. 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/THTLM1410627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6dc333f92236cf6b0b5f4ba463608831d922fc427c92201c2ac5e4ec229bb2. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/THTLM1410628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086be66562c708d44df0cfbdc6eff8ee1797c0f5ba827f8f43a0fc23c93ede96. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/THTLM1410631.