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 0x991153ef6908164350ae091537761eeb0a64f76234eac8e51bd59b1cf29124a3. 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/58dbf2b1-181c-4fbf-a416-42cf371c428c.json and https://artists.proofprofile.net/proofs/artist/58dbf2b1-181c-4fbf-a416-42cf371c428c.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 0x38205d2c294691c1dec1984fbf43684746a5cba5317157ea680915768f48838b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FRX201958804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa246728485bdf93d838f26efaf96c1aca36034b3515c754d79711a493b15acf. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FRX202008567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8073d213ef9675291d0bcf8c2123373654c9df6c656a2b933dfea632769f76. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TH2DY2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad950b59706cd7dff8d973fba13e1e6256ac33aeed554227c0ce6039cdf384. 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/TH2DY2000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b35cb42911cdfc3a458c8316045a67c931cd3aabb48c0289c03f27509bea70. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TH2DY2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bfc45b0094c4d1dc4d1a7b8faccbdec50d50e7d4a57a7549334f9c224795b3. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TH2DY2000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246b85885bdfdd8b6ae9b95c91f25004a77a79b8a87f554820d32f8cd540320b. 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/FR26V2027278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ff03c2dd35bfdfa0d6bf9d69de7103b4ae15fc99848e12e1f37c1407905207. 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/FRX282170612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b461a198257195a015c19aec4b91291592999eda253f9cf8ad2a82730ade651. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/FR2X42237977.
HUNT (Original Soundtrack from "Hunt ล่าคนปลอมคน")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc0c8a27e3f6c357d5471e513a4b10d1c101e7fabaed25046fce96a8ede4b26. 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/DGA062292684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf025844f454bc88668e5169575432ece435862114997474f4169c0189085827f. 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/FR59R2331893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ff03c2dd35bfdfa0d6bf9d69de7103b4ae15fc99848e12e1f37c1407905207. 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/FRX282170612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe484e17dda470b8bafac7946519732a5cdab17a75f088a54fd348ad11a47d3c0. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/FR59R2331896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc75e85d76eebd9500bcb1406c46288dd2f8d797eebc1ab7ae0b6025b5a6dfba. 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/DGA072298669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd8fa8a8d5c03d292c2c01dcfd202419ceebf77fefcd3097a3c763ee34caa39. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR59R2331897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7f8a86b434b014b3bc37d818ecb15d28de0df275735d32f17aab3981a89eb5. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/FR59R2331898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd5cb64ebba9a1df436dfe80b7367c6009d6dcdb4e0b48e1531d317f091ac91. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FR10S2327371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1ce2f34daecff26224618be617ad6b752382aaa2998e79652c6c84afa2e029. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX872322263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968e89b4f739023173f97485ed66da4da9771a8f7b9c891700622b9c70627086. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/DGA092314870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91c55e2a1b1afea74cca00aa689080577f728ddf72ceb33ff03e6d613f61591. 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/DGA0L2309309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb77cab67afd70d3d1623b792a5db8248ba62e4039c7875b83e7c45a9089dc7. 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/DGA0L2309310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff66990c10cc7df4474ac35ac13474f100410c601f26f5373194b129107e9601. 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/FRX202154484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610a9966501ae1057a7d51216cc13537852c46d64912bd8dc098a47f7586ace8. 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/DGA0L2309314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f6bbddfede042ea6e4344b81e55ef4280e1dec9ac848b9bd5bea7d50b663ee. 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/FRX762442190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1e21e8e0a474fc541eb337b9381fe943c03e9a61cc15808c64db9dca473414. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR10S2521035.