Eys (; ) is a village in the municipality of Gulpen-Wittem, Limburg, the Netherlands. The town is located from Gulpen and from provincial capital Maastricht. Furthermore, it is characterised by its
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 0xcfb3a4fdea00b4ad46435b54ed431882defcc6ae41445fa30f4874e535a5ee2a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8c29e61-4748-4f03-9aee-3e383bb9bf7c.json and https://artists.proofprofile.net/proofs/artist/c8c29e61-4748-4f03-9aee-3e383bb9bf7c.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 0x6d0bdabd76e8f396e925117cff59c2607ed212a519a01c14de41084bd8344eef. 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/GBSMU4835126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064d07856edb2ca2ab078ad89c9c0c43657aea31f83777d33152cf918af70155. 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/GBSMU4835127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef843060556da1d2feb7dbc81cb3c52a896ca7b02c84882369a9c06a85290173. 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/GBSMU4835128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f26ffbd138834090370483dbfef627cac1d2ea72280bd89e35746cb028e9b2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU4835129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bb076a1977e0f155cd3a8ec7bef2d62fbb52fb6619b2711c213435f2997d2b. 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/GBSMU4835130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d542cd1b5e0958d8a73713795e95d8ef11fc64fb10ab3634a05975abed77caf. 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/GBSMU4835131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fe8ce2059358bf9f0e55ac0edada5c34d572fa98b87336b79242d544bef340. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSMU4835132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c00065c2666bd8ba3dfbfa6b8bb4a92045861e2c6874af9639c6e975c158a3e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBSMU4835125.
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 0x3ce3fa058d6ae3e22f9bf058b9639efa1c0f4f0d337e6124fa9adf161e039a1e. 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/GBSMU4834872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc9fda92d83ed560f64b69742df3179df5091936789e910f6343473d5ca1e9d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSMU4834873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d18f7f06be8adc255e600c27f11de5847816c2639f6cc7ce4fecaa18bed33ea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU4834874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8431f5ea9b8b5af0698c47f3d469d59fb9bdc1f20d868b08c748d73e0bf5759a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSMU4834877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4c69d7484d9a8ffb920c86c2b2cadceb103393cf13eba7753d429e434839d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSMU4834878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6dbfb2acfcba9f14d56428409ce5807b17bb5ebb0521f7d3043cb4590d6dfe. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBSMU4834871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e9f84ac61d5511f2a9c1feb04419024e9e9be53f799f25eb3d7b25724c4d5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBSMU4834875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44acc8d986fc0435c7f9c5558eb25628cbe305956067e72d7bb24bb694c4f39a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBSMU4834876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680c1c51b8402f9e00a3d27590f79b22302ea9a8e83fe4330b755023404376fa. 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/GX8LE2426420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1faf0a864381fda2ad428ae0f853232d57a78c5163d18eed862e3e09229ab36. 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/GXBDS2394138.