Witherscape is a progressive death metal band from Sweden run by multi-instrumentalists Dan Swanö and Ragnar Widerberg. Witherscape released an album, The Inheritance, in 2013 which featured Eddie Ri
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 0x97183dffe1c9541116131bd069fc6fff6138446d1f93e8139fdfcf0d0de34d95. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f365b7ce-c9d1-49c2-83dc-6c8cee1a6215.json and https://artists.proofprofile.net/proofs/artist/f365b7ce-c9d1-49c2-83dc-6c8cee1a6215.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 0x959cdf8fcbb77b8e97b8dab5bce5ab5faa0ae7a6ebc12b48dc0a70b8b3340b03. 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/US4E41637701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a58dda62052e8da5b19b39cb93b9ce8a7f09c4bef253995b49f11b878e9e626. 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/US4E41637702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716b1ebb2c8452745248bf1a45200d2802464357d448873adc59fdc0c0f53b01. 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/US4E41637703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b48528735a58f66e0e84eec1be54bac5d0570d7ab820d43810733409a61d52b. 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/US4E41637704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea163e4cf7bbf33c5f2b06d370590ed14c35693f662b8f45881a4cbfb6ee936. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E41637705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e68ad331c250c68836fb34c21b56bad6e06a96d6ca15d805bb117f813abaec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E41637706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a9190448549358f266ff8b685495a60953922a7a172a30d271230118694c04. 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/US4E41637707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566273d89ca8d3073bb7f58244cc2119fa3f589798b059b1603b61309a1e0d7c. 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/US4E41637708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d02cac8eadb8d2d484b41e96cdd8b3fd7ddbbddef9edf557f1e510dee4260. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/US4E41637709.
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 0x980bf7ed77abe39523212a1e6557679dd0fe9d270846a4f4d092ead1b9e4d364. 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/US4E41419701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb654b7c34877d64b28104de97cd54620a9d41d23ca1644a048ca7e7a1fd239f. 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/US4E41419703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3169956a7fcb162873c92ad8a87c5fd4ea5e2c2d8261ca4b8c2934de7b12e683. 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/US4E41419702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1ee51a676ac18da5ff4bf56cce4745d8c519fa9730d6194f99fea9585ee9c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US4E41419704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e77c5ca4a0a08ce024688bfa63a7028f208ee81341a6c0b45b68ac923c2187. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US4E41419705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e68ca5ac2620dfe48a17741cc8322fa89af301ed6b4c6340f84b917b4efba9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US4E41304611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e87c0cbedb6cf82df4b25c54b0229d196cba263d7676debfefe2e8f4db987e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US4E41304610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e1d54de04372822a7ec9075751720e3823ac1b390edf67cbeb9919d8fb179b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/US4E41304601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d0afc82320c7a84b973de5b243049cbcba35b868dd7dbdb8eed4cf1af82a23. 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/US4E41304602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a2f73b473e847d6061500fa5e3f3a86bcd0307d6b38afe7573eeb57201337f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E41304603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85709f48e237dc64a85870caaef6ca4edd43e6b294a13311bad34b27aff3fecf. 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/US4E41304606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7232e1e0b2d63179616efe53b0f9f90aa37483751d871a2b03c3de7b6f92b. 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/US4E41304607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827cc52628bbf237ca595a6d02a7b65398b237e88c4c25e900676bacf82efe0c. 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/US4E41304608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead83f721372176e9ac4611b422d14117e75d3a2e828920ab0e3fdb89e5611fb. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US4E41304604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900fe24e998e631b82b27de30de622f63bbed82fc59cd27af94adc2312cd1d61. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US4E41304605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a59870f931f932d1ea182ff762951756390d064f6b50c2e40d5175ea2e3927. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US4E41304609.