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 0x5419ad3e356d191cc8b2eb4104e2c0298387127eff72190c29324749837a78e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99d3d2b7-6c9e-40ed-9ee3-42e7f1aeae5a.json and https://artists.proofprofile.net/proofs/artist/99d3d2b7-6c9e-40ed-9ee3-42e7f1aeae5a.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 0x46cf47212e1c6af2b2935cd9315d7e42e625620868fd1356dfd616a17a893ce6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6P2181725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17465343f9f7c391914db4286eeab2647d54cc5acddd1b6623a071c73c46d2c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:30Z), 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/VNA0F2103880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab9179377067143bd1a346cdca75aaa3026b842617889ccdcf0137758b887bf. 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/VNA0F2103976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a87093a5960a60b3c0926c643036d70caf70e46c5a5cf0c9c06473310a57dd. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:32:40Z), 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/VNA0F2104111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2904059eebc70993a515cb3dbfa73edbc88302ace38083354035780a1c98dfbe. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/VNA0F2106796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e7a513656e64a18260c445dc5274e834062d03400ff546fa4e5e5c3657275c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/VNA0F2106982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de32c54f01653be245d82c2d39fe6ad81f5b2ad536b8d9b5f3c67a4d0af8c66. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:00:04Z), 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/VNA0F2111697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370640da653bd64307fa7470a87f57ed8ba60bf5b9cff2e1584bdef31d72ac22. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/VNA0F2111881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193ad22c6a29d8a2592fddc23430d6b9e4257e3bf14620ddc3a4d25ac8f16e8e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:14:25Z), 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/VNA0F2113319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65201ebe44b348554134a2b1724122e1787acbbcd8520ac75c9ccc2ea95dcb99. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:23Z), 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/VNA0F2122631.
Đố Em Kiếm Ai Yêu Em Như Anh (Lofi Beat)
Sầu Tím Thiệp Hồng (Lofi) - Bạn Ấy Đẹp Quá
Giờ Không Cưới Thì Nào Cưới (Cha Cha Cha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e56d0a2217e869233ac4190e75337060c0185967fdc133b1418f98f38d0b8a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:35Z), 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/VNA0F2320318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f9ea66fe7425a604e0e876dd392df6747ce59c95d7a3bbe389ed0368e1b43a. 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/VNA0F2322699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835be363e6e89458c8373f037ce7dc960b9ee5eeab508a2ab4f057e81c15d372. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZYHM2420329.
Đừng Hỏi Em Ổn Không Ver 2 (Lofi) - Beat
Ánh Mắt Biết Cười x Thủy Triều (Speed Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3c45f9605b0e6ed8053ab9014a56483da644331da7e1e7c6f08ea2a034ff23. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/VNA0F2506117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f35c533bca8644b327d9634695dc85eb8a1102f3a6071df4f7867de0a57e52. 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/VNA0F2508442.