Haps is a village in the Dutch province of North Brabant. It is located in the former municipality of Cuijk, about south of the town of Cuijk. Since 2022 it has been part of the new municipality of L
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 0xa709528cf00e4002756486eab444f2eb585fc0d95d16bba1e0e8d7a3fa3a3658. 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/78798af9-5305-4079-b98f-c076440f7b8d.json and https://artists.proofprofile.net/proofs/artist/78798af9-5305-4079-b98f-c076440f7b8d.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 0x26f49228e5d46cc537d22c840d884166f71254d20bc1191e7424dac088d495a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ATR981335628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4274f2899e2f665eac227c5fe0cb73561149b32ed71744d07e71cb5cd9a15a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ATR981341892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb804e13b2791f4e2fb1f87bcbe9de1e671d446a157866e15b7ce44ea34dcfce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATR981341901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d1db478ac1d7e9eff65321cdc6893c4d6cdb7821440561f0e7a9d308f61b9a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ATR981341902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3e62cc6fbfcf6f78f05c77246e7c65adb26ab676b4ec3fce0008c90d139842. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ATR981341911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f39828cf4f2a05ff6989cf72142d3a06135e9257a09ceeba668edcbbe3fb091. 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/ATR981342791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2fc81b009281ae9cc598be45ddcdbabfcf3b7c20370d0aa4e7a60290069502. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ATR981344822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750df1d35a4871cc18095a84f4cf0287e969cd0e7f2d728e81bfc4eebc8954f4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ATR981344823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680088b7e616629071bd725d41782415ef847fd121d4bd71aeb9c56c78fb44df. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ATR981344824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497712f79da06c4ed1c00bf0c865ca05ca6f57d3f1f19c1c7440c07357587579. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ATR981344827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bceecc4918c111f45d09fdd211ba8aa1a1c51895e29a7bf80f1ef1e1c0786d8. 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/ATR981344828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73575d69460273bfe920399f91128cdacf969ecf6bce863b2cee715239084fc3. 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/ATR981344829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d3710f43a91cbcbe60b6d4794a5c913107b67525436a8c258fc6fbe4e61f6a. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ATR981344830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb09a7f6045580b48d8b4c63e19cee127a06880bbe36926b9a1fd646ae828f1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ATR981344836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdfc95336c7306cd1400479407d716edfea55a2536756e5fd19a6adeeb98b7b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATR981344841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4f838aea776082f80e771bb4376865f0a5592a806172550379b8f84d24c713. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ATR981344842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eb82ea6ba2d04403cad8a0af5710dfcea4b6ea1c4cd32ff048205bafbe7ece. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ATR981338906.