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 0x7e1321967c012fb107b93c3a49f3783403c601a60659b2b2ab0b4d14dc0fd663. 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/2e6d4864-bc6d-4d1a-ab73-32da289f8a5a.json and https://artists.proofprofile.net/proofs/artist/2e6d4864-bc6d-4d1a-ab73-32da289f8a5a.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 0xbf77d013ebf5e566c448cec12825163f4936843dac18f1bb7bab0dc3035d2e12. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM42K2093826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb619d0f56a2c71521fb9ffa0c1da80e6e5ce1571ab27ff9d28a567f4e2a6ea. 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/QZS662150150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d115043b643641ada97463a817d99200aefcc96adc1d57651f8dfa75b9ca13. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRS182166108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9600f2d0ece50b8835ce92a300b89ef5e196d01885b5860059c8dfa9906c9f05. 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/QZN882238013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2d7071a533f6a6078826be6f75ce2e9d7c80c49dc14d7811575247ea504973. 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/QZN882304359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00145f5aa04e8d593c40b2b81581f7b649c0ee856b846b11e0e05d0d5cbd60f0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/VNA0M1930108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d28d1ccd0689c46b0bc4e8a05291a05d8500f25d25bc7c996a7e65bd0f34bd5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/VNA0M1930857.
Thời Tiết Rất Lạnh Vào Ngày Hôm Nay (feat. Hustlang Robber)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca3f281e081b41f56750bf5a7a1b6bb4c694a01c57f4dbb3a3e20dde3fe3b34. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNA2E2313002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fce058abde2df911dc7155f941baee76093eb5561ee8f0e48eb71428fa980b9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/VNA0M1931436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e334da8482b64faaabab144500e829207bd675713e228c2301e994e98e0a33f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/VNA0M1931665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a8b9282ca73f5d740aeadada184df5b4da725cfbb45b3a9526264e482e9de2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/VNA0R2300229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42d7f1fb6d0e72630f82b89650f239779c4d8ccb0b0e68a9f44c6460c4264b6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/VNA0M1932740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3a3e0de4c5d3a6068ee0d9af92b8aa9775ea20a6f6b90f8e46a8bfa3d0c57c. 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/VNA2B2203642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1002386cc60160b293bcda4c93aa398b043d3d1466faf77e1e6464f27f6f982f. 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/VNA0F2318844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8dc6d9ad4e24f1e9b6be928125c2e298d17c6a79f318da77d08f5c3cca222b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/VNA0M1933812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323a91207ba6ceed18684c1d774071ddb6d8b956a6b927bb0b75fdfd2fa2df69. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VNA0M1933822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f0cc4218b5ef6ff9333864823219b14d579bd14ee68c48d1451912be898633. 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/VNA2F2400699.
Nhạc chế bóng đá căng nhất 2025 (Lý Xuân Son)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631ccb77f7b58d58c565d5b2b65fc37563277de4b406f66b7ce74fed5b645052. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/VNA2F2500027.
Say Đắm Trong Lần Đầu (HITStory Live Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ef87612d32a8b46b3b08d55fbb0ebdbea2d410009910e56c10b8ccddb1560a. 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/QMBZ92519767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbc9e18da6b8c61686f3edd385022424b4529b80f4cb7e5707e0603178ee0b0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/VNA2F2500252.