Heureka is a science center in the Tikkurila district of Vantaa, Finland, north of Helsinki, designed by Heikkinen – Komonen Architects. It is located at the intersection of the Finnish Main Line and
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 0x1733b3c580b528b233b868a028ede5339b6d41ee05702fd2367e399da9dd5079. 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/924f8ac0-71b8-4db5-a0fb-378eb4738ac2.json and https://artists.proofprofile.net/proofs/artist/924f8ac0-71b8-4db5-a0fb-378eb4738ac2.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 0x59b740ba7b9e1f20e9c042f0fc0c4331bd39e6719d16629265e3228cdb29b4d5. 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/DEAR42313187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f57e2034906c0c3347e4334ff8e2fc590b5a6662eaa2b143c18ca71b506f1f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:17Z), 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/DEAR42313827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64dd4b264440df44c3feb89edfe5ded0d700885a3fe95603d3b7f0127a9615a. 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/DEAR42326656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3584982d9c184970cb348754978302a0447c9ea1b585a2259073876c1b0191b8. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:47:43Z), 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/DEAR42396825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4945e1f243846ebccd098f5f6207d6de910c7a419301c872228cc117cf89bc25. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEAR42300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af2df017556a9c54c3cd0dcf7aab27cf50e6dd0e42833c70e81986caaa42e99. 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/DEAR42340661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed16a897909bfae975da1f310597e68239ea4da94653f5442704eb8a2d692252. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEAR42384582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4d4f6ef6e7ed94f48fb48bcfb2511eca8db2fa4e42330ba27c8e6ad5864f28. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEAR42336499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4128e32c9328b878a7bd70202c39c5fab8ba5452f54eee6e1aa9dd1be1ba732. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEAR42325181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b00388a07ed6819b2fae5ecdb6a157035a31d991e57e019b64b1348d85076. 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/DEAR42478380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caa83bcb9bc3f22ffc8c35e725993002d9715c847db2ba068900c1570c70082. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:31:45Z), 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/DEAR42478822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffc6c002249dedb0b802b70cf5f09d871915babaf24fb9e6743e71eef8fa3ed. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:31Z), 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/DEAR42478383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7d41c6ffe9b572c76c1925e44593e8876236d12480c3c1fe14813895822542. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:26:43Z), 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/DEAR42478503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8acae99702d234971dff4e6758042bce97144b11cc5ee3ce19016aba2bc13e. 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/DEAR42479687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf149f2789197ac9b0ef1ef4ab91b4e0b3a5fde05217f2dcbf41efe6ce4b47a27. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEAR42478731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d209ae3114981fd053e0b4599db6c7d4b29604e67c2adcbd80e9b4330a547a7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:41Z), 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/DEAR42478416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa1caf407b2bba5cb670d4f24a0ee1a62603437353e77fa5a6672533364ef70. 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/DEAR42478475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3ca48dc25a2e137f5eac4f4577c7171bc11cec21bf003d8ebf255177118f25. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEAR42478490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9f37b1dd7c8a1bc281de6d28b66def5937bb5fde6925be7a921929dd1cc81c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:22:54Z), 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/DEAR42478376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93129712ff5113e3c3b56844b470e97a06098edefafda522164e6e86298b87f. 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/DEAR42478586.