Headhunter or head hunter may refer to: Headhunting, hunting a human and collecting the severed head after killing them Executive search, informally called headhunting, a specialized recruitment s
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 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 0xbbc8d3cdc759521d595bb0e670367bdd41793e7bb7b594b5a46b10aea6441a4d. 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/6a854885-956b-43ab-acbb-ba4f58a5bc80.json and https://artists.proofprofile.net/proofs/artist/6a854885-956b-43ab-acbb-ba4f58a5bc80.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 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 0x31cee34bd58c574b2571c11154b5593239d8ade6b654487f32f18c2f73d7a756. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZK6K2215793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d47fb218f2de71c9d4d1cbb2dc8891d8d2a496d1f88c6a893ebe86f7c42f459. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWT2242674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e680447091acba9eaec9490f7b7d2bd4a3853f5caa5873e6994458c4f82fa0c. 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/QZFYX2312203.
I Think Im Still Damaged (Backing Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dbee2274d43bed66d712f4e649c4bae8735a260e150baf1dc6489ecfa0cde6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SE6QE2365309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2aa44fa1b3b8e619b6e8db73da4bb363ff14cedce6dd7c45e63f6a2c8b3bff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBMA22306741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389933d4447af7bf1acf0a9e8deacab5ed7bad2891b6be5abcec0a8208e57ffa. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZAKB2461921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb639f8fd3374bce18ae49f2018f026fa07a552bacfb8d79b86acc7260b34c68b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZAKB2469057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0124be6eb9f20462820980d07d711eb7bcb5f623a15c01f19e4bcce8f59bbf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZAKB2472298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc334565f5a0408136e142a3b21a9ebf72bda3558b382d37e2c11269ab8ad2b98. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZAKB2476051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e057183353814cb993dd0461f4a43fd1d41a4c17a8de75207e04acd6a26f01. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZAKB2476057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2f34ce346d6c1891896fbdbadc524c8cb4d92a684929e8113f80cd95e8b9c6. 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/QZAKB2476066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f9079da12310c7ac7ca6c376dafdcf25f0886d8ab0cc58f2474d7bbafd5914. 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/QZAKB2509304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a40d5ef96b7392a3195fff599b975355b8f95e557740efa33f986ffbf4f0fa4. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZAKB2530569.