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 0xcb683f772fa6d3511be1591463582c58c0f09d2356018b2a532766c3c70e6b76. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e14cec6-b2bd-4b6d-9379-a836b08e5541.json and https://artists.proofprofile.net/proofs/artist/7e14cec6-b2bd-4b6d-9379-a836b08e5541.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 0x89c190a606916f8eb86f4f4588a4d74bb12d19f4cc29208ea108c574f2fb190d. 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/QZES72204249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a93e770e6ee1f28f96e4713976f3299f26f9ed55d7c9bbbd7be6e1ad3c48f9. 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/QZES72204250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17c74ddd4e2965a1ed31bf369a308ccd0ccbb5ef2d365bd0b1f0782b5dd4475. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/QZES72204251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e1d997506466fff3e00bbd06addcb4fc3677bf8d485f346db96eb605818f9. 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/QZES72204252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0450067cd2ca28863cd7e7eeb82f6deab89a860353e193bcdc58cbdb51577f6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES72204253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83e68e90e0c4912e55cce28faa7f7235d983159b901c634a992321a888f529. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES72204255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1965509b97fbfb6fb0d44ff3c8b4b4a492ca588a2ce89258224ba15804ff51. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES72204256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ba5559640110a54aa03987379b6c775eefb2e57505fea1a91cb122dd799d6a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES72204258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dab52a89fdeedb92c97990a41c61a8a13a250e830347074d1edb7615050b44. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES72204260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeaeecabefb1005c877e2ff284a7d056254ba091731790f2465011cdb7d0585. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZES72204254.
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 0x9c765e462485fffb16067b045393b105284c4d19b7872634aef06deb5a6814cc. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZES72204257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bb90bd69f334e52a4477e88e5dc9c75cae2cb03fe4ee0004b77b300857ceaf. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/QZES72204259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b816a3de00db929de529e6c161d2eef9061f895a519969a4871f76af977d51. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZES72204261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75993595d0cefad8d9833073e314e720af85ec22f0f95d113d8bb8b4e693c317. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMER2476298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b506d713762e65b0b795e70da20a3e1dbd537425d8600ff50f51f2f0d0a2fa. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZWFN2356651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f11b030e1faa7bf83d3ff695e7113b6df924f223196bca6bc1cc048435d469. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRP42372447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4565343ea0cb4e65d3f0a7405177f3c6fe6f3e40cb00d086b8f47dad42e6a0aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRP42373626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea12d33e840c7d4722426c790b20126b06da32bfc05d6b1436775ab28a32ad0. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/QZRP42373625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1af684a06167380d9ab25756fc2a0feda30309a9c279aa02559824e3e147a58. 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/QZK6J2292483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d769a0956139db7cb0bc9164a4078b6949c3f3d549b7cd71677273ed1ee2a. 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/QT3F62584270.
Pittyes2es és Gyufa - Nem ismerlek, de megismernélek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1a80c8e53201cf64c909a409c20dfe8a8137595b395acb4f087cb6c52418a. 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/QZRP52593978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5656ab803be76faf89ed93816d0e4bc44caad31fd91845532d044880518317aa. 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/QZRP52591665.