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 0x531d154edcbf3e94a455706778b1e7958e4e545cb590dd824888edd92c2db7e5. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed2cfa6b-5378-4638-a44c-18563f531cae.json and https://artists.proofprofile.net/proofs/artist/ed2cfa6b-5378-4638-a44c-18563f531cae.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 0x608afaf0f12a361aad4d8eff2b08ddcee9dcf5d030a049545fa048b2cecbaac2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/THSOH1907127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1aaddeb215e3485978c85a5cac1d6a2e80575bf322a74ce76cac83d78b3391. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/THSOH1907128.
รวมฮิตคนด่านเกวียน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2feea19e9edef02d410c7195c2bb3ba898bad8c68ebf312dd2d35f1442217d1. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/THSOH1907241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec1d1a8aba75db1799a8f4fe2442e672c91c60e21054bbd7021101addaa5356. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/THSOH1907242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d6f6a02000429fd6898d4d94d0f156a72afded4370bf22a54e84bdb167b245. 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/THSOH1907244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f29fa2a056ed02d5c46ff66c63746d874c5e7f06d496f62173abfaf0264a516. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/THSOH1907245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2507a5bd6e54ca1c894329875879aeb78567e7a19b516cc024c30cfcbfd11b9. 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/THSOH1907246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100905619d773167d76a9934a19b8fe755ac463972aa2cf0e52e7b70c243cdf5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/THSOH1907247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc26866c95f758e097bb628c8b95c95af34dddeb0e1e70a92381767cad14771. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/THSOH1907248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3f2714dc80f21f7e2ceab74eed2b2fb6a6f6aebe88db2defc56846dae8a529. 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/THSOH1907250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832b45eb0edbcc73f9a1bb0ce991dc94483ecda8db7229323aea8fe7f0b00e0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/THSOH1907251.
ฝ้าผวยและสายลมหนาว
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a44d0d3b0ff1f5f7d223b771ac331d081c81b548c6ba98ef864664bd581f87. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/THSOH1907252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5334672c6bf6193867fa766a6af2ae831175671a294c4a9d71ca5816575100c4. 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/THSOH1907365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b8a24df379904492a50544493cf9f21f587b31415f8cbc15fbc385832d54c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/THSOH1907366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf7710ed46367b217150dac106ffcbe47462deb5172cdee77175a459101e78a. 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/THSOH1907367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9cd871f711e144040f12d2ce6a763b78cda5c03e11baa3832401eb8cbe9bee. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/THSOH1907370.