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 0x03ff57f04812ce23c4f60a22752b324db2d965448f4be671b187d495f04e8dfb. 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/d13d9c32-cf7f-495e-ab2b-c03d9d49cf69.json and https://artists.proofprofile.net/proofs/artist/d13d9c32-cf7f-495e-ab2b-c03d9d49cf69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
เสือ สิงห์ กระทิง แรด
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 0xfe4ebd25ef455c772114a9b9087a33af813160de32d3a13682d7963ea2f161b5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/THRSP1216176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3a7da28c54a9b6609996d83c27ab4e4216b02b67613e48a3a1470ce8f4097c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/THRSP1216177.
เอ็กซ์เซอร์ไซส์
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa333def32066d4f10faa2183822f39e222a4772e3808ee62d87bab9e5f07be5d. 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/THRSP1216178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb171aa55faf50037c116cd0bf489c60d6b4cfabf83dd1c6ae9cd2faadc28c0d3. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/THRSP1216180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07edebe8bef652fc919b619dacf6e236ffedeea8097facb24eac2a8f8f9d4105. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/THS081036501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb53529fda2f8ce4921ea334cc93abc659348e81115163e03456fe59189027e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/THRSP1216183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c540fb8a67227cd29c78240baf36346257a535f489e96c7c5acb75b389a82b. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/THRSP1216185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a77c38109ec04e7df9281a25db0fc6acae97f1e52b75bb970728f2a726b1a1. 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/THRSP1216194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d37ba5c21adc686704bb37e34bacd53fd2ddafa0c0cf7860a08a0163818ddf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/THRSP1227546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e2b9eea7de1477291b7242599f37983100b6741d64a8645e281e83627b6150. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/THRSP1227547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55caca9a04c0aba105f94aaafe587b5dd2229897202e73897ba48b6a797715. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/THRSP1227548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe159bef12f17869dc4276afda9262ba2a0ec04ddd25b69209e8bb0885c751f1a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/THRSP1227549.
เสือ สิงห์ กระทิง แรด (Re-Mastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228b023fa033bd98a63b758cd446d4fdb4b143a076992bcf1efc0c7349cdba66. 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/THRSP1227550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac91c4772d1a0f077f46d9a547ec74eaef2831881597772ed9c93c9976dfd56. 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/THRSP1227551.
เธอผู้เป็นทุกอย่าง (Re-Mastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60365b1f63c8e6387510dc9b3e2e180652829728196fd7e27a9b92f73692a65. 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/THRSP1227552.
เอ็กซ์เซอร์ไซส์ (Re-Mastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41150557be97e754b22bec9c4d26dff8848caadd9798b3f9e40ff9f677765ecd. 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/THRSP1227553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b960792905326325e37f9a24b9747dafd56c0375761ff58a9604d78a1c50ca9. 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/THRSP1227554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7bce20bdc595c894cd07544c165c3aa72126e43629fc548e5191587665bab2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/THRSP1227555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e22c27342bddc08508e5feabad945be59d7e559a22037103b5d4a6ba7bf4d25. 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/THRSP1227556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7c60df3ae96cf1d455f0c4700b8ed2a6ecb9122aa208e9df964ccb836569fd. 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/THRSP1227557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950ef6adaa777e40d7eaf91bfd45508224335a71382c5b47b124b436304dab6. 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/THRSP1227558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd8c7c270f1be803bda850737dea771b2bd8ee1247714fc12820070166ebad6. 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/THRSP1227559.
คนมีไฟ (Studio Jam Version) (Re-Mastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c7282bcb4306cbf99a3561afdaa4c591cee45f22967c52721404ba15df99f4. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/THRSP1227560.