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 0xec6ee6bd7b86499ab52ce04acf2ae676c61bc69cc76279cdaff4696295995966. 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/c740e18b-0cfc-44b1-82af-2db9bf0de508.json and https://artists.proofprofile.net/proofs/artist/c740e18b-0cfc-44b1-82af-2db9bf0de508.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 0x78f98c32afd7b4bafa3002fe91c029dd4d63b24beb7b87fb904afa1ac2fd99e8. 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/QZES72195324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9ac989693d64fc089ecee3dff886fb50ba190831ff83c6c0054b5cc71736b2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:17Z), 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/QZMEQ2230388.
Danh Vọng Trong Đôi Mắt (Marik Ishtar Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a46ebce0e933058e1258247866dd21ce17a4d026a256ed6819e81a8b035d396. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZES52329406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeba8f13e2400e51a56ac3393bd6162f33f785464daadaabdc6aea2a8f3a5d0a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:21:33Z), 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/VNA0M1930981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0225df66790a8bc129bb8e5e7302b0783fc121debcd620cc569927decf87f5. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/VNA2F2301476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dcfd2ffc468fa7672fb4291950dd1dcebaa2ac07b4aaecfcd3225f9c08331e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/VNA0M1932906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0a4d6b5c83a87664c6de9cd9aa8a846dc65d800194511c79b0af6147bf1d4a. 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/VNA0M1932907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e58a1c85938f254ab21e356e38355840d713ebd8825201e2b57ad7562a77c. 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/VNA0M1932908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18041de6529219be2ea00307071a9ee86f17624c898f65b50a49378731e50155. 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/VNA0M1932911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8862a5f1a50e3fe8f28b6e778374c2c98bc5659d337cd31bfb29094551909483. 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/VNA0M1932916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e754e0c4c935ca418d43e237a2ec99a2da2d6c80dc8268190d92a7dede6707b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:50Z), 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/VNA0M1932917.
Mình Lượn Lờ Moshi Moshi もしもし - Quân Louis, Diva Vi Đá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879900c612b502e3890fbc860be8d235133b0fc1822ec1a8558df72a562e8d33. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX872517730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d84b9a6148594930d9f5d1f8841e92b6c2b982e5aae4dc6e6d160c5472fdfd6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/VNA0M1935641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cc9caecbdc1a118974855412b1316849e2123362e80e11b8a1458abba907e4. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/VNA0M1935639.
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