thumb|right|260px|Gilad Hekselman (2018) at Aarhus Jazz Festival, Denmark Gilad Hekselman (; born February 3, 1983) is an Israeli-born jazz guitarist. He has performed with Anat Cohen, Mark Turner,
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 0x97f97eb8b94650fd53308be10cadc6c599e6444fb058862f226a52deb7dd4220. 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/197fdffb-d67a-44c9-9bd4-9ff9b576010d.json and https://artists.proofprofile.net/proofs/artist/197fdffb-d67a-44c9-9bd4-9ff9b576010d.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 0xcdc19a3df63949dceeb4c289d86cdcdd59143d8f82b2efc8004ba3006517a6e2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMXBF1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e26a66740332bd2edb970b7b193b69a7f9943b0f93d7f449771609cde9c40. 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/QMXBF1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa7193c6bd60cc20201040e93471c762922351cdccb734a08735d7353cebfbc. 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/QMXBF1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1b31685b3fdb3b9dc51fd45b59fa50bc918eea34692a80da90858c7bc0c6ba. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:33:39Z), 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/QMXBF1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd37158edb40f9c5f128308a3e28ced888c5b45e642e45f81d950ac8260e3e2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMXBF1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008e250f8954ef6b67f56d8e6e14fd14dd8162061c6c321bb8938cf39ea10287. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QMXBF1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008e250f8954ef6b67f56d8e6e14fd14dd8162061c6c321bb8938cf39ea10287. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QMXBF1800010.
Fast Moving Century (feat. Shai Maestro & Eric Harland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5d1f381a888edb0abcaff0cbf8348b69db0f22e433b760e2c05c942d4ee5da. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBVEV2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8558dac33a7fe64f9bbcb86b4526cc8434e11f3dfbeebff37f58cd87416f04. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM4TW2430768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb71e96eb9001e26a41cb966932ce4b3040bf0c8fa2c7258ed657bb9a5e7f808. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW2430771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875d44852476da40e7d8e2f94ffba1071ad86838b701714660ba8a9713b55980. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFME2440974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b76673c357cf0b17d81d2b6d189acbeb4bc03911980042120173510fc511ab3. 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/QMFME2440971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd115738e1b8bbd43e5ca8680301e95c65678a2337c00e3da7eb16c1cc25ebc. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:06Z), 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/QMFME2440970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b76673c357cf0b17d81d2b6d189acbeb4bc03911980042120173510fc511ab3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMFME2440971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d608c2227f7228115b92876fca5de4cb9202f4b1f36aa14274d74881d54728f. 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/QMFME2440973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd555fdf01f02bc58136069a98ce0593b201b7b721225d5311274e69fdfe93d7. 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/QM3JE2302416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088dc83cfb096a2549e0812d9c391743e0e86e730e684092c8f8cab45f81e691. 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/QM3JE2302420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088dc83cfb096a2549e0812d9c391743e0e86e730e684092c8f8cab45f81e691. 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/QM3JE2302420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393851dca75e9765a5a4d293c621372204f6cf3ba91227d7d9728a233fbfb0f4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM3JE2302470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd555fdf01f02bc58136069a98ce0593b201b7b721225d5311274e69fdfe93d7. 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/QM3JE2302416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279013f5d27766eb8af0b7ee977a34504c43c05a28f800a4d394bf4c7a040287. 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/US92U1904455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49b7eb9e80aa21c0ceb972f195fe117d29e123f2b89c863e57eaaddc9ff34e2. 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/USY871400113.