Haan () is a town in the district of Mettmann, in North Rhine-Westphalia, Germany. It is situated at the western edge of the Bergisches Land, 12 km southwest of Wuppertal and 17 km east of Düsseldorf.
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 0xbb0159ebfadeaa4dbfade7ad389647d4b8249e45a96bf199901554d1e8fe2299. 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/85ee4bb7-cee1-4beb-be5b-8abbcdb7ad38.json and https://artists.proofprofile.net/proofs/artist/85ee4bb7-cee1-4beb-be5b-8abbcdb7ad38.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 0x6614dbd46150318fd967c810bb99b26b986c61ba34727850261995c8241813eb. 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/KSA002401067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975f848b0957771c02222013c4b1c22b14fb5e96130fc9ebfb0e3ccefe7dc598. 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/KSA002300800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41f02a838f44e1c5b5028f03ab700d8e677dfe2ef8fa9e70f568298e1979282. 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/KSA002300801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad75046e9abe403d4e7f24fa988b28b764cd8fe684a16012a34d01af4353022. 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/KSA002201590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752a7b65b640c5867c8093f413c90654f57f2e1b0ba48d4e9593d642a965c398. 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/KRA382403541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e396d003ef8ed72120267800580879e7fbb93f97c92383c05757550f3f9aa6. 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/KSA002303477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27a76a342a53cbfca91d1ecc1f7926030f963a613d01e5be9f9c6bc5f906309. 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/KSA002302356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccd385b26e563495caec5bee62045d66e2b2ea42d2e3d3c9dfc2aa81b4aca68. 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/KSA002301586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f8b0688dcab3dafd470f69cdfd65fd0b784d28b357516154d4f1f9062fbd1. 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/KSA002300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6b6e03fb6bd9901bf56e9d33b4ecfcb2bbc71f33d28da743681241607c121a. 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/KSA002300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6135954f7fd363fefba217efe97272d9cf991dcd6e9d79318c0816db608afca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KSA002300269.
Chance (Feat. Peakboy) - Sped Up version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100ea259fa3a44608f95555f74a57ecb314639bc7d5a18d15759e5f1493ef45. 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/KSA002300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e14eff893c81970bc1c07cb0ee48f68052cde4c10586cb532a9f16a00c24375. 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/KSA002202453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf437023fe5a9a827ba293555b6e870d1b27c240f5158f4bc35aa4ccdb3d96ae5. 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/KSA002201979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd0c79cb544e1669f47e2eb4ac1346930dbb6f37c18fa7a57e74958b5ac7fdc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KSA002200666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1157595868066a3ef10f576da06af563b59802692be3d1475a859e56178b2948. 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/KSA002200667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3afef07d981d7bfddbcecc5bfad9db2cb7db997984900db41f65653b6c6219. 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/KSA002200668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9f6aca7fd97cc96acea6fc6b232c6a38fd8422ea6b0b17675b11521ee0fcbb. 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/KSA002200670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859a0a5b22ac1d3fecb0746433ee4fe0983952b9dd6aa21fd945a4b54e798705. 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/KRMIM2121102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664804a74d1828bb46b89fc675b4f9b1f4e203d077ff5946004dad08849ecb5b. 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/KRMIM2112644.