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 0x14fd6ef4c90edf7902fabc9caa9ae894f731382eed020a26749256a573f039ec. 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/0cffc80a-cb45-49be-aba6-ef8b6ddccd88.json and https://artists.proofprofile.net/proofs/artist/0cffc80a-cb45-49be-aba6-ef8b6ddccd88.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 0x79ce0b3a9d0225d679a4ff779c5c0c4489823675a722c48b1f107c8108eae791. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0P2393464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa904f0c55a487a0dbbdb7d2e8d1a9ede6bc28b51e04af98a54b98132030a30d5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA0P2393465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4be0c955d0436ddf356446568860ff85de4cd22e5b26cc59727adffc79d0236. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0P2393475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7323923d48801f34ded74840ed01b748e188f45ce8863b67e6cb4041c1714b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0P2393480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9e6f66cc2f72b153ffd41c01ba0b39fe906d2067170d13c74fb79fdfac4cd2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA0P2393481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e31fc1895fc5c82fb803d86fd6168d8a790398fc5ddc2489add96d426cb5fe2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X41850824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8859281bd109fde87ef6f9794bc9b093359ec0e37b933e5e6321e025ed445f14. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX201844097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12270831d3047d20afc8e0987e2ea580de576a958acf898e69e121597d6fbaaf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX201844101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6f5404cfd92755c401b34523090db7fe059a52235ee7898b6d6aa53700cf83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX201844102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e2028ecf9f6f136b1bde6ec6ee7824534d8b6808668b8ddfc187bb22e82263. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX201844103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa03c68ab68b8ab5a01f82c074cf2695b3d482e36a79c86af80b5a38c355d53c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR96X1736998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09374bb5b217737abc1b5122d8f160bcf337a88fa4e89664536d9a7b0c2bc948. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X1737000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea28f40eedb1d812084a02fa8ca7dc5c21a1153a314c90f5d4daca870609264. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR96X1737004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abdf64dfc31d915f2c282d363fe7727f97159c883526a2796118bfab2214b2c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X1737007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c83c3c0e4d9ababdf354d01734b82dc231d7bf18fe89990e69497125f96957. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUBEC2570045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e23a13b6492aa3704992886913e647078512eab42b6ca476b4729a011af3c7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPY202400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d003038b5b1fe4ff1fbb70c5897c041f2c1ccafcf3fe637edb565999b334677. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAIN2449642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e093c827dbd452cd1e1afbdddd968000e9dbd2066ea78bb17b905fac24dc9d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR2X42411006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998eea9e99d28605c2a8575cf3b8093824077df30451ac29afad3eb5a81a4f9b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR59R2314513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d43334b04735d998b7a9dceb9c8385ea01d31ae68648b54c0ba47b69a2dc9. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:32Z), 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/FRX452245913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2162043fd13d956cc15737ef8b16359c064490d166610614ea5ed11639d105. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S2249911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fdc7f5e73584dcce6e3f581a9ec8fabb07cc675221d3e1dccd1329ed9be25a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRS182143463.
กูจะไม่เข้าไปข้างใน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd06796744e47b39b693ed977ed1a2552d0dc60443d3e8cd0499ee3d2f1dcd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX762130766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751f35e321c13a74e0ad31c604632ab58a43fe2e6e548594044d2b9a2268fc0d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762131307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5e0ed5fbead2839a73f69e9d7bd7f555ab483bbea2dd7c4c422455f297a13b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/THSOH2101691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ce2decc00a60d271d2d32a5f6b640c5ef545cff1baced9a21b6d96529078ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TH2DY2000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32005d53c287d2c54b2627b7c0553112fa395d4f9bc7c8a73a7cda3f4bc218b3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX202044329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8178d6547f6c7a03cf3ccc24544e44c84bb6613148fa1b57edcd552039bac1e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX202044330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e4f2a757448afe7d7e1e5ba868dc497903fe6f23e514c06fcf3ed0588162e0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR59R2037500.