Atef () is the specific feathered white crown of the ancient Egyptian deity Osiris. It combines the Hedjet, the white crown of Upper Egypt, with curly ostrich feathers on each side of the crown for t
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 0x96d42e775af84972919e31d4011f12658e1fd4c7d1d515e8b60e0454366aa4da. 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/e7540b64-a64d-49ba-a274-37b68655c52b.json and https://artists.proofprofile.net/proofs/artist/e7540b64-a64d-49ba-a274-37b68655c52b.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 0x56a87903adbb37d418034b369264605ec76aa3ed931bcf07b29065c1e5ab515e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM42K1907700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde78053728f3a7685948f89f43bbbe78780f254c5d3c675e2326f7bf33d51e5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLZ632090024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839a9509e58a51e71fa874229f6bb112c9e7d761f45da53135f357694dc3ac76. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA52102968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101fe4a76737b119a58be79b8f98775218a1cdda9f48a5c9f5410086b09eb10d. 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/US83Z2115002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb721568345d1a5d7c66d84c0c056c6da76f143cafa8c70df42f45f413c1c8592. 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/USLZJ2141587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79dea27d083f594f47de02d5ed20ce601c385956cb80f8bb9594fa51bb43d09. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN32225624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7184bca9239adf8d14b0908c6003510d3a807a51cbf353459ce9210fa9d399. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWX2253272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f54004f70c266ccca2b9c6457667620301cb287a62f9d516d40f86f0687d17. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTB72266101.
Sensational (with La:te) [KayLife & DJ Spyroof Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41c19e8cd9943fea5a021643705f42aa289839692b90f7317837efb1b6a9e57. 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/GX3HH2341467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d9d6f9ebe354d3667647c37d6f9fd23090efc902cb46e6307e5c659501c96. 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/QZTAZ2578302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ed103a39ee56afb125248adb64cc8d71a2f654a66b0540496dfab9a3e8599f. 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/AU8N02100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62b4d14a981de0c5a767ac537f956e61aa34faf681b18bed3b2db4193628ad5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AU8N01100153.