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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aff22f8459aac87880e82d4de822442223eef1af84d8e21a79a030d8eac64d. 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/d8a5c658-37bf-4e30-b9a2-54494012c78d.json and https://artists.proofprofile.net/proofs/artist/d8a5c658-37bf-4e30-b9a2-54494012c78d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2396c9c1e9818fe8d06c862c359ffdecde67a5e614e9be8efd86ce72be5d86e. 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/VNA092004629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35d72bd80fd74a82b6660b9f2b3b953cd65de24394bfd9eb2379bc35e8ba516. 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/DGA052292006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afda850e8fbe02fb11282900db62bea8f2b18a7b8f35adac3be2db99b828993. 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/VNA092300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a1659dd8900871a594e82d0393ed3b2377ee7d76d584fff2c36a6e549657ed. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/VNA2F2300993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fe751d59b8cce596240d508364f3ae413c5ae4bbb9716ba5593ed00a675d15. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:28:59Z), 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/DGA072375640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5b86ec06b128064c652f709200785a0496d66109355792ddddc94d5d096adf. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:16Z), 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/VNA2F2403000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23b3d7c9f759732dbfaa2ba390e4636f0d96088b4fc2c89fa47a2db21ce24a9. 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/VNA0M1940140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e92df50a71e28cae87fb0451a474c7841237f9aa5718320cac812b3f1311a61. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/VNA2F2500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe372c7ba07f6dc87da58653433b54a63b4144768899a6f5fd47281b01485e6ca. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:54Z), 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/VNA2F2500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60353f8dab4fc9cef77bf63661d76f3388eb8eefee3cdb30488d5d0d1d5bc08. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/VNA2F2500655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc7e08f808fb540df9a483e03d9249deab001464393acd56ad9517aa8f13867. 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/VNA112000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab58caacff404cae4b9c4d5e4f6624f658255b18b1f5b92fd3cabe6e8b771f4. 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/US39N2310741.
Vẫn Lit - Hội Không Nón (feat. IndieK, HURRYKNG, CAPTAIN, Ogenus, STRANGE H, gung0cay, Yuno Bigboi & Tọi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2701564ad40abbc400a93430c65601746204c687f0edc236b5909f35b9e19b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2301440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. 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/VNA1M2284589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8dd6e681f53ca9ade368d3bce0b3ccbaddb6e3a4df40f6e069b135a86559ce. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US39N2305797.
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
Bỏ Thế Nào (feat. Tez & gung0cay) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e6219455fcedd238e953d2e90824ee0d68dca29472dd09de4ded7d12e738ad. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US38Y2415229.