Henk is a Dutch male given name, originally a short form of Hendrik. It influenced "Hank" which is used in English-speaking countries (mainly in the US) as a form of "Henry". Academics Henk Aertsen
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 0xf6d6951e02227f27de8ce1b5812c3a2574de2df36eb1632747f4624a2cfb3e09. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b1e6677-2415-4a34-8416-cd0861f9b45a.json and https://artists.proofprofile.net/proofs/artist/2b1e6677-2415-4a34-8416-cd0861f9b45a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hardwired 2020: Eikelirussen - Partysnekk
Isbilen (Eikelirussen 2020) [Partysnekk]
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 0xb3d335b12ed09dddf12f017fbb70d144458291bee72fcf040a270413aa1ab567. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/SEYOK2027115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b29044b73f40b18f3809ced6deadec825f1ef1b1c4b0ef4576e29e7e2a69b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SEYOK2027130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd83635c5912e396b2c7edcf6620b1f5cb28ca1348b8832bec89456dbce8a4. 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/SEYOK2029244.
Hjulaften (Eikelirussen 2021 - Partysnekk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862c880036f49ea417bae135ac801f99bf126de9f9bc7af3ab850a3dfff28737. 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/TCAGD2246526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5df2f2e4b500a1d24e00a18a4a619211e960c74422fa7b30b38375600352792. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P2331483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382e124bcb56db5411ec59f9d31c7b64533ed02d1cdb05776e210605dd665262. 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/USA2P2350816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c794533bab6cbfeb2580af9a42df6952883fa5afb8c75c3d6059bd55239f9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2P2351182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311a79574627f84bb51fb43a575e4382381887d0a958219c36bfe43bb36d8d31. 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/QZWFJ2314513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d03617f2c82591de7880c3c41c3e740f707e7fdb00fb1e4e9d26ef61440edc8. 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/USA2P2362976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed7a579b284dbad75c38ef4c034114e080bb766bc0928bdac4a0fbee81dcaa9. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/NOX8G2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cbcd923491a69397a09c6375de282268644eeb99e726b16b1b246e4c679b59. 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/NOX8G2400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ae3d4f0f763dc4bb7e12034d7d0f68894ed83f8156a191c65110312abc7f25. 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/NOX8G2400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f25bf9972c07dbf64138672bba1478042043116bb881bbe6fe73a32ae8ab021. 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/NOX8G2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666e2c9ae0e2f10b7d5dd8968ffb2db233933b9d5467c86e228b82ff6fc2161. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOX8G2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af4586a0356f3cd13337db666be80ad7eef4289b112e80a6ba6aab468f9b9bf. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/NOX8G2500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c058c401cd22ae25880a0f04db57da1e4ee6211a63bff945e4f895d827c70f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:05Z), 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/NOX8G2500475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f21ed3628dad47fcab7552b0d6edec4eba5f45e3adc5c3b7ddb97e8d37dedf. 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/TCAGP2285379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62890152180b2c85fb342f26138c1c4586a534e8a1d43ec5ebbc8c4d2aa01516. 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/NOX8G2301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1aa243222a00e2a2af7ebaf93f63d339bcf3305e803706487ba1a6c7bef7ff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGO2274488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb860d6682b7e13420db9d7d9daf5229a5309d4b50b2cca19dec855b26577e121. 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/QZHNC2429083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6242f63e4993b41c9ab08080f4a29e92c278e8a52264d1f8c7787bf46edd11. 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/TCAGD2295753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6506beaac56fcb889f2800f8f9c59615d031e223f2bc2df5d3ffe78bef8161d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOX8G2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977380bff8151c500fa23f4fc0c6ec321ac6cdff6c3e310f317905a02b009e8. 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/TCAGD2272233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbd4dd162335071158a30203cde42d7a08475232f448a63bf798636238f6557. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:05Z), 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/QZTB32269723.
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 0x7fa256b3bae605e9e2d514753ae4dafc32f519b5cd9e42b5916f7fcdb0b2c4c9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NOCKK2243050.