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 0x6ae720cc237d22ab4b5448653848105587f9cc28f0a6c3d4a232b0126ee87026. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c08f352-b03f-4d01-ad74-4914fb82fcb0.json and https://artists.proofprofile.net/proofs/artist/5c08f352-b03f-4d01-ad74-4914fb82fcb0.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 0x62059729e2c2a9efcb419c9882886740377aa40dee14236899261555c2a94fad. 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/QZB4J1873431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f791ab106c2350dff496e6100f602ecd4e441609337c4f0b37227d2f2ea341. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZB4J1873432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784c7bc4968b992d58a1d47c36414c0cb7154257ed973e16d1aeb8d9aaa8dd73. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZB4J1873434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce78dc26e538266676ecd30d8202524a99d5144ab19751d97ab7c476fa7fa4e8. 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/QZB4J1873435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae06af2ef648b4a240baa8d67769c1431c022ce9d6d45a96cc35df92f33a1e7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZB4J1873436.
You Were the Only Good Thing That Happened Last Summer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88175994cd6d4c3f9b2c81779abb315cb89c5acfcb773f223f660d7b2bacffe9. Chain 2 (Bitcoin): anchored in block 957529 (2026-07-11T06:30:13Z), 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/QZB4J1873437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb503a641e2ab53a0b85c70c1c13f5528dd4223c386d8761a20aafa482c535. 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/QZFZ42030497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ebf4e97011f9433258844539a1e74ffad47870431b637cb7a6d74c6db63dfe. 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/QZFZ42030498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cda8e5c4b75ac56cf7a247de92018f9434558724002313ae99d31fb708247dc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR10S2304648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3da68e1be60bf83a3d6fa822301f9e1b23988eaecc7e5dda14470c8f7169de. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:44Z), 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/DGA072363235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b10a43a840b646c41f70d6684f1f0b78192994cf74491d5b2399b57e3a3dad. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/FR2X42487262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b53190dac5151752ba98ca29b6f06d372e568828d7fa8fb7048ec015557ca37. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/VNA092402850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9147b2b74a1e6516cc038cd97c486eb8140388d9dad44ae0e1a836a32bc2b0b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/VNA092402851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eceaabb057ec34ecbf675e4be7666716e42a07d93b83b25c4f85c5f9664a6b7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/VNA092402852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db369e20d02e8949e335aac6db4595bb926cd9d7b7ccad18e4dc714809520e. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/VNA092402853.
Đừng Yêu Người Nổi Tiếng (Remastered 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f1eef46c5a35846bf81ca70ca12b067a368928719e7169f0fc0082e7c0568a. 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/VNA092402855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf98be3059da3f9ef52e5a699ea987935cd0dfaa7b28f20c24ea13a2ebf25cf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/VNA092402857.
Đừng Yêu Người Nổi Tiếng (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3b35d10088dfe5eaee057f742cdc154ff37d20b8f7f49578c42abc41072b44. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/VNA092402859.