Slackwax is a German musical duo of electronic music formed in 2005 and made up of Bernd Batke and Peter Hoppe. Batke was at the same time frontman, singer and bass player of the neo-country band Smo
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 0xe965415addfef339359868cacaa2452f9ca756cd2bbfe2768078fffc845e776a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82d10e46-ce03-460d-80ac-9d6833488185.json and https://artists.proofprofile.net/proofs/artist/82d10e46-ce03-460d-80ac-9d6833488185.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 0x3a07d102e41ef86a1bfa81917dd84eb3c161f95ed0d6f5bdf1d960a2de1e5f4e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEAW10700087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912d4edc2e63f85f69746c3259c2f5940b96d45ca19c2bccecc7bc7e1538811e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAW10500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6642a5651d68e6d747b25f09ce11d2148666c115b61a164941f2c4fcc1a7db2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEAW10700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75349b6f1d78b52c7fccbbd702f4262d0ea7e2b20cf5731026a48e6dad42c029. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:38:56Z), 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/DEAW10800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c288fded09e3493a43df0866c5e5c5fdb70258ee363ef4eecbba5b2d317f1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEAW11000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf4256da46a8d80754033415cc6ce26df4f52e37f48adaa81264778acbcc0c4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEAW11000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aae404030b62d29b3847567118c8c3949a5d1215726423046b378bde0b6d7c. 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/DEP081100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6fd0671b21d72b78a9ea1cf7d8ea1e184629f4e427458d5de5116ebb480a5d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:52Z), 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/DEP081100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8440fac9c01165b410f645c1d6e458241a086e373157ea2374019bc46a3f2431. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEP081100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c288fded09e3493a43df0866c5e5c5fdb70258ee363ef4eecbba5b2d317f1. 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/DEAW11000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780666f16943982ed1d899fc43bdf6b532a71241621a005b955c3ca25b5fe002. 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/DEAW11300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912d4edc2e63f85f69746c3259c2f5940b96d45ca19c2bccecc7bc7e1538811e. 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/DEAW10500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e4a50615e1c63075be267ca57877a68372a7093bac7fc1fa0bcd112db7d176. 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/DEAW11200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278804196cdb9eb5cf2a781d97831aef4cab2a5f3d23eccebcc635494c5cf913. 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/DEAW11200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75658f67ebb22e13cc339c39acf573b6c3e36ca0eeb9ae4c06bed11cd9e5a23. 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/DEAW11300319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ec16682e778b547e7687c9eadd8a32ce20352777652bef1465706ebede9002. 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/DEAW11200289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2978448026361de21e2a91c5bbe3d7073bf464054d3dc8155e67b044f262ab3. 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/DEAW11000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182649d8dcc11aa149c19888d78afe9dd2d1aeb75204bfbd77e21ddf906502b5. 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/DEAW11200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11f05dd9edb7704eb0a66224a8a7263621325617f49be1a1328fbd541b1ce86. 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/DEAW11200291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359c73f77c67b79da8a4300a9d74e1266a39981c4d4bc7982fe49c3796b45709. 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/DEAW10800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd241a1959ba60974b47d4233056a30bcba5455d399d90d8cbdf2e3760e6fb251. 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/DEAW11200292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6642a5651d68e6d747b25f09ce11d2148666c115b61a164941f2c4fcc1a7db2. 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/DEAW10700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9752f54accbf016d12065dda67d3108a390419d768511f6bf4473c422fecba. 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/DEAW11200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca1b0b5751e2dede6a43c3e7b3a350493ae294b4bedd5b4c445972ba4b48347. 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/DEAW11500395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e0074151b51e9a5c83f557adc9dbd79555115417c837f69d9779b3b03cd0d0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEAW11600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab97a182994e251ea3495b963c9c8417aacc2250af1a9f7063e525661b78f6c. 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/DEAW11700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85e555cb84f3fafdde8740953671024723997895551a711a2b35325a3b9fb51. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:01:55Z), 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/DEAW11900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc275dde158dc58be8f6b66591512f1683cb2ccb437fc66f2d5897d48a4da37f. 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/DEAW12000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b469f2651302ce6a30a5920480b9e84494ae8f2af2e7e6d9b25e04e52457342. 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/DEAW12100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cc944a9658dc6d1ea9da6eefdac8cfad534ce5e70dcb8ef90ce0e5d3bfc00d. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEAW12300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6dce32d475255a8eb4b5e66f4bdbab9aca95eeefdf3422bbc0df39d4374596. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEAW12400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70290ce90490e6fa383b1fc1f82ed89e612fcab8d14b486b120bd46a28c7d208. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEBE71300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c288fded09e3493a43df0866c5e5c5fdb70258ee363ef4eecbba5b2d317f1. 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/DEAW11000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912d4edc2e63f85f69746c3259c2f5940b96d45ca19c2bccecc7bc7e1538811e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEAW10500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912d4edc2e63f85f69746c3259c2f5940b96d45ca19c2bccecc7bc7e1538811e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAW10500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6642a5651d68e6d747b25f09ce11d2148666c115b61a164941f2c4fcc1a7db2. 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/DEAW10700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359c73f77c67b79da8a4300a9d74e1266a39981c4d4bc7982fe49c3796b45709. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAW10800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c288fded09e3493a43df0866c5e5c5fdb70258ee363ef4eecbba5b2d317f1. 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/DEAW11000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf66d2b6b68e8f1354df5f1797b2e405026efed5d8f1d52dad352f1c48d7d99. 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/DEAW12400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912d4edc2e63f85f69746c3259c2f5940b96d45ca19c2bccecc7bc7e1538811e. 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/DEAW10500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359c73f77c67b79da8a4300a9d74e1266a39981c4d4bc7982fe49c3796b45709. 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/DEAW10800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2978448026361de21e2a91c5bbe3d7073bf464054d3dc8155e67b044f262ab3. 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/DEAW11000221.