Horrendous is an American progressive death metal band from Philadelphia, Pennsylvania. The band has released five full-length studio albums to date, the most recent being Ontological Mysterium, relea
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 0xcf6ab4cecc45f6565266bbcaa02bd3ea2d6d903d190f83e51147a966e5971d1b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7223860e-024e-4409-8283-e5b10dff04e0.json and https://artists.proofprofile.net/proofs/artist/7223860e-024e-4409-8283-e5b10dff04e0.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 0x2c48ae71cee98589ff6e54b5fe8d1fd51b70b3b2d51b552a5bda3c86d000ce6d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US6R21483912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0a87e1d5401ea9d557b083de3c303e5078e8c37bdd6467308b6f79869c95a5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/US6R21483913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766c9e306207c5e8d50decb4541c2f0c35d5af3f380f853b81d8a08be97ab840. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:53Z), 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/US6R21483916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fabd474fb7db3c19ac2254062fa058a620ddf01d03587e044f44122f1a73be. 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/US6R21483919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47a529e4a41412293749b22ad652357e1f223aba3a2a9122b98481b012532a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR33T1849001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da24af64fa05c42ae75e92a76bdd4f6a9aa30042084cef1fba86228fbedcc49. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/FR33T1849002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69920aa6d4564997c749b771631d4eb8fe3a9db0ad08c73813583a561d460c3b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:24:46Z), 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/FR33T1849003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1fd478becf9ad0deec48524c0e82ba7ef46f2b58efa85cef98d9fb19321e1c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FR33T1849004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943484de24d959bfa35e6e4660454b4a1dbddb9cb3da6b387d587a770f0b8c35. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FR33T1849005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fb7ad4c40d5398f3cb112218ce16322880fc93206e98c9379c237c87e458a2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR33T1849006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f0c990645404bc6d75b887a5b24e24f2714abd1eed12f9f93954920beefe50. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FR33T1849007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780aab9999cd07cfe35fbf3697bd7a583579c9ed785ffb1aa76f67354b0efd3d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:00:14Z), 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/FR33T1849008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358fe44f7fd111baecc150c267a3da84b18211b8074d2f1ef10326477d1e63a6. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FR33T2353103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5fdbe4f4b7d15c4bfd07deae8ab24bf3b37c84b69f0d5a4983d8346b3aac94. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR33T2353104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d6519975862d60f88c0ab3651fb5c5ee9a3148d9e45dc573e0011127d68282. 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/FR33T2353105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0028982f9c25de7f81f2253881d085819f02d0d38f408cdf74ae745496687026. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FR33T2353106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718b70a7864e49b5b7b60c601e28f8049aecab5d1585ab32946cc3844896442f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR33T2353107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3716b5c5a0aa17c9836ee544324869aefbf4bf882ac0dba4030df277991817d4. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR33T2353108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45074795e351ceb42363e4a7ccd45159911e424a1c1380b6bb9ae8473951ab1. 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/FR33T2353109.