Maggot Heart is a rock band based in Berlin, Germany. History The band formed in 2016 as solo project of Swedish guitarist, vocalist and songwriter Linnéa Olsson, who released in May 2017 the debut E
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 0x99b8aa2321981b7e9309bbd0ab077743f511387249788aa21f97406859b1d0d9. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d19cc4ec-eea3-4160-b282-87728ee7819b.json and https://artists.proofprofile.net/proofs/artist/d19cc4ec-eea3-4160-b282-87728ee7819b.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 0x98fbf300f33748bf329b6ba90541684244e0f108a18f77fd5f1f16da023093a2. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FI7S52300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf711c1593e3ac4ceb54b6ff7112fdcbab34781523db853a8cd5554e5c605113. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FI7S52300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ad032ab1c3d7e69acb3137a95311b3aee5e96b8eba6d8e6aa543ba4249d37b. 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/FI7S52300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d9f3a23f02961d6470e0533ec8a79a47e8555fa24c595a83a0a3a09d9b79dd. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FI7S52300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a095932f8752b167f50addced0b54c75d5adf7af63d58b7ae63ec4e19f2313. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/FI7S52300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a32bf5db61e4618ca966d5b907c27efaa5610969042847668a9c82497b674a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FI7S52300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea70b0ac6f587e11bad2919ca4d48d7246c2cc6abe0a5933828d52b31aef4aea. 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/FI7S52300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db217b0d433b1d2a2bd72d78b27b0f024732f278d946e59111956d384b90780. 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/FI7S52300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79ce2acd57f6925c67a93ab313dee3d4b76a88bd65dd528066ef2073d239d9f. 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/USY252158892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c7e00e9cd1857374b9ac43deb7ecc60c28b955ec852ec98c011826976edbb8. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USY252158893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe01e89f3e7c33ab75c0003df6dac1bd9936165e4af21d334f71b8fea778eb2. 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/USY252158894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f4ec10ba50974c4333249c32c6505f2c072b230b73addea22c9cd9a88183cf. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USY252158895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafd891c3081c164954c170cd6ef7f9942ffe4061aa0127854653af81494b541. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USY252158896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a107d719b2f3dddc4d4b9832e57d610081180ee3ab98526bcf13be3f29104b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USY252158897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bd042711bde8359e32fc508815447d2ac9a19d20bbdd717a53fe46ee1d8185. 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/USY252012713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7690a2605c6aef1f75926817058ebe9ff987e56751b2a84c382184806b61b0ef. 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/USY252012714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40411cc9bbc0c2598a258d01b6398e3a3bd126c72fa01e272190486f5ffcbf8b. 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/USY252012715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7747fe57ccd6e183dc640942c3bb61f93ba01e0b7ce17b0986756ca1e2e5a9f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBLFP1877809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dd410e9a6c99a55f81406ef607fc4272af525e643d1bd003aa25243d2cb0eb. 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/GBLFP1877813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb427cee0a778505e12bdbcc5454b9de5972a281675e3608ebe073503d8549edc. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBLFP1877815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db019a00528c75aae1196f1945dde0f83c5e11595fe91b3aa3c4a7472ed6df8. 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/GBLFP1877817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9c96d9de9175f75abc904e405f2682490ab0d4dd7acc21878f8fe1a7c580ba. 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/GBLFP1877819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0166c29ad7c5371ad966091192ed912a682a42e2f462eb5f60ca805755592e25. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBLFP1877821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11d028c3ca0eee7b125b8600f286239e8dfc0ea79f7cab3174a1faed061413e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBLFP1877827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9a844fba8ee73b426281905f238f7fe5b11107264c6fc4f30521bd745b2984. 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/GBLFP1877828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a095932f8752b167f50addced0b54c75d5adf7af63d58b7ae63ec4e19f2313. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FI7S52300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79ce2acd57f6925c67a93ab313dee3d4b76a88bd65dd528066ef2073d239d9f. 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/USY252158892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b7574977d33cab20b5ac1652ac7a2883f068de3c99c0716283dbbcfdb3b249. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLFP1826667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4cfa32c6190642efefe5a9a8cc4f2cc72489386669fff041f60497db162673. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBLFP1826675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191bcddaf3c97507376d5448643d9ec523a7ed55713041888423b2a4b65f61f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLFP1826680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe692c342ae47bfb232eebf867c7250a9b0c7e496f75791a3bb4762aa4b99afd9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLFP1826893.