Hede may refer to: Hede, Sheyang County (合德镇), town in and seat of Sheyang County, Jiangsu, China Hédé-Bazouges, commune in Ille-et-Vilaine, France Hede, Sweden, locality in Härjedalen Municipality,
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 0xd8ed1d85536d539bb3deb4ccc1f508867d36ef1f865425276e2265beed985cca. 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/083ed3e5-3108-403e-8b3a-11474c511050.json and https://artists.proofprofile.net/proofs/artist/083ed3e5-3108-403e-8b3a-11474c511050.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 0xe6b0dba2df36cade1207fd173b1404ecfed1856bd262caa65fcb0d91e1e08617. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2523775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7ce002dae6a6bef5da151a31d5bcf8b49db53af0fc1bcc31d7ba9dbba5fe20. 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/QZHNA2587971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52899b698fd114c3f849c1910e1a44a495ee0f6412f7c6fada3772e774797a80. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2587979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcc45658045d9e83ae76bd2d2573ff55fb418e28340fdaed74796ee8fda9421. 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/QZHNB2525325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e06ccb6762614e8e4debc065465bf1d81f55edfcfa7aec076f42e830f2ca43. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZHNC2500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f78870f905f1cdecbc0684230adf13ff4b83c4867447c7fd2891f066d7a4d4a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNB2568405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2344a279cf18b31bcce6e58b0a65a187a0d7eeb489622f40a745ceceec2546. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHNC2500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7c0760c99984a061f8da7233bc3409ad4ec7bb989d00e7b4277e27343a644e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZHNB2598142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4899ddb07e28cbd86aa8d777c2fdfb476e8152251eb473ec189146b660a52e9. 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/QZHNC2500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dbcbaa6997e9859ab4935dc8ebf0c4d465b25f4bceeae499c825e8c52fa3ea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNB2568400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13501f8b358f827e8fafb4ab971e13bb9972418d0b17021ede91bc3169d1ba1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNC2552506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d41cc63051f652b8bb1bd15caf1f545c6dc0511b3a56a97791a53b9e226177. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZHNC2552515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1889a59186baae53026444aaf200c0f11e48878063f2328ef61b4bdbedde16df. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZHNC2552514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67b2279421bcaa069c4228eaf7aff808d4e34c126274d8f4cdbc0c049f26446. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6Q2523539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe349c62433e9c44da82fc6b7dee7f951d3abf74735a7455a16b124323eebe844. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZK6Q2523568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f8168df6fa48fc1688a63262bd216bee1c66f1fa702b1c24c5034b90dd5335. 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/QZK6Q2521735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a2f9e17250aee7818add6ebff6ce6f9519968e472e1b2a8808da1492f7c726. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZK6Q2523564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f6a43b5f4f5fffaed19efd6061e3f2e53dbe9ffa7a867cb23a12d4c17bcbad. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZK6Q2599693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea0c09975d31d017abfc4899ab35c2c22d445480f23dd904fce72ee820e3aa2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6Q2599690.