Hopen or Höpen may refer to: Hopen (Svalbard), an island in Svalbard, Norway Hopen, Møre og Romsdal, a village in Smøla Municipality in Møre og Romsdal county, Norway Hopen, Nordland, a village in Vå
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 0x57e56cc93eb715926c0b903fa003a6df74e71a48bf9e9a2c5b076222e06ba5b7. 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/3d3e67ee-524b-4300-8461-aaba82381ed2.json and https://artists.proofprofile.net/proofs/artist/3d3e67ee-524b-4300-8461-aaba82381ed2.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 0x9bf58ab00d6ec2a9f6fb8ccf445d34462ef4e13996f504a6b37f86c2605ea673. 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/FR6V82682762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0d7ef86f08fd051dd89ef6b3eb108164540eee9fe63bf45d84994f878dbf18. 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/FR6V82682763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ccccc8b600113878ecf484d4dcb0baba3350c2459e3ed00e3e6772bdd8fa0b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FR6V82682764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ba0df49da9676b5ebca391c62f87baa2519c586ff69199155a002f03e6977. 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/FR6V82682767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae0f0f86e3c6da48620d6a87157cd42016ac75261cd46a3410d7bf0e05cf389. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/FR6V82682768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff3c92fce4b6d68a03e6342a597cada08ae70ae727df5d98c9131693b8b54a0. 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/FR26V1635455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efa501b998a9180c1179bcaaa9caec18299af5d1bd6862aa66952acaa9b995f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR26V1635457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d2911c50f8f6f09844b6be7e30c96e38da98d62709be30a2326a7f74089a96. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR26V1635462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888df8adac068f446d632f29882833fd5338261f6732650c70fbfd9873be24d7. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/FR26V1635463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dacba45801292e561b969c309d624562fdad875641e8975d471b520834e830a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR9W11813455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa650a6a4531c97f2ada8f4b3b138ad1999f2cfeeb2b6108bdf455e4d1993c7ef. 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/FR9W11813458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d522ceb74a0ea5402348a5e3545b56d7d4728484741993e7f210e535940e3d. 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/FR9W11813462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e750481629fa58aa52066db8c7a1edf7f596d1168f0a932d25e220299a20ad. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR8FB2108200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5916e653e25305621cae06df12f5565c748c73440d08c12a0f70fb0269ba79a3. 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/FR8FB2008300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b4bdc66415a70abc4fa9b0babad79cd3e81240885d2c96958dce25d9c90e6d. 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/FR8FB2109080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c505fc6905f72c14c3808a51fcd23e5be7b0953955b518195b6e28d9a2bf8d5. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/FR8FB2109010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3db9d3bfd7302ecb8d84a5154f75569f894583ac9cffc1a76757645df623c9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR8FB2109020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3702cc0ff6169d1c61f3b197f10045eb8d6e5b0e3d33302d95b9731abce70e0c. 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/FR8FB2109030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870035d6d6d6905deac2eff9d6b7a4745eeaefc1ee1d82b725256d86c5d9b243. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FR8FB2109040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd379f7f879dc7a83de956711e20dd085ece24d2017b9668a469ba2bc49a4afcc. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR8FB2109050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c56e25455827179c2603f729c5792a3d7a944b3a9c46cf097fe68b2dd28fc. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/FR8FB2109000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3dc1929649a11d1354449fcb6545a557d9431da8429996f6fe54ffb3ae5373. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR8FB2109070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ed31a6f76489496d5bcf8f5cac9dc3046f5905da82b2c34d81bbc86595460. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR8FB2109060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeba076a6291463ecf89e9681e5fd1f9206a0707c624ae24e77d33d8d601e10. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FR8FB2109090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa034c98547bb483e9d463a0ecbb2d344665187911e27abc465ff141c4726f092. 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/FR8FB2003670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c85280de249bc8a4e381416adb761a3eb6182e33680ef0cdb5057dddfb5370. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/FR9W12467222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a64b4661eb7f954bbb9c9e323fa34b6495bbdc1f390b64262332d9fa4b7d5b. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FR9W12530090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe4876aedecfbc55f4b7ecd06d1b8b560193b28bf06e9b14d1c2f62c1da9fe5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR9W12451877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8793e8b6c3c5b96fb2efbe762f938d83a7159c4bfbb7e786f6826e962e43f24b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR9W12526392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd9019383d757de935f4796941815ca86f4a999290abb84829548858017f42a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/FR9W12429374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b24287cf352972fd95618f8e87aff75368b7fd821a381a3df90723f9cb17197. 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/FR9W12525548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e03d970faccf69f7176682d9a68097f9110e96bf9d86684cc76539b4c98717. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FR9W12530094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c85280de249bc8a4e381416adb761a3eb6182e33680ef0cdb5057dddfb5370. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FR9W12467222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fee78a45b0570ae36421c869ffd5325359454ee82b795dbcfa077fc9906346. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/FR9W12530092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5e15b2e762d089e3a8fdd6aad2adebb4107587725ff838f73b551d8c7cb53. 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/FR9W12523938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb9f2123b32ca98fb0b486b86b181c51f12d350bf71697f93e5953a43fb9b27. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR9W12530091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a64b4661eb7f954bbb9c9e323fa34b6495bbdc1f390b64262332d9fa4b7d5b. 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/FR9W12530090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4ecf6d22c800863a8b441aae93c43287bec95fbacfbf2104d5dd0001385f39. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR9W12426920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9a231ddf6c805890b9ebc33d4c66a87aef157ae86a8d1ab3cb88810297760e. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/FR9W12530559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ba033f28431794819fd47eb41c1940d4eda4e4aa53cf430d686b5c47e340ad. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR9W12530093.