This Ending (formerly A Canorous Quartet) is a Swedish melodic death metal band formed in 1991. History This Ending was formed in 1991 as A Canorous Quartet by Fredrik Andersson, Mårten Hansen and
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 0x7e791606e4f2852e4fc65104cb5b6a80666f786714767f96920498bfeb9c579d. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dafff2c-faa5-4377-8584-83fe384c1122.json and https://artists.proofprofile.net/proofs/artist/9dafff2c-faa5-4377-8584-83fe384c1122.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 0xe2cccf29dc9284c187d9ba001aa1262810c4edb91e353babb9e5bc84be671886. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEQD62300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccbdaf24693b11f4f4412f49a08755f9e7878015293b53e485624eb2ca4b305. 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/DEQD62300767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb98d611493cb4fcd2dc93bbc7bedbef6402599638eaec69dc3256d43f35b30d. 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/DEQD62300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608d7afcf6f719128a3380409bbf5ccafe7db92210e6f72f647f3e4bc6c0b40a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEQD62300769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1fbb04756e4fe789fa6dafd765dca78d82d362033ceef1d08100d40fe6fd3c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEQD62300770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e5d7d834f977d4424f5aa92f004375ba1c1129b94f753d3d84be1603232875. 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/DEQD62300771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ba20ef7421837ba67f2bcd6e36f00357c6b8a63be45452032c051220bae013. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEQD62300772.
Lord, Master, King and Emperor - All in One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd99445852811144391752cd89572f528388bfad1ad624807ecdaf2c838d967. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEQD62300773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f549362132f66f0ba212e2e8ff4f82f7331001c47208dea7bfe33d8739e3e6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEQD62300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc109c8584a0e6ebe8808dd90b962ee836804dfdded46b460a4ec9c6ac64573d5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SE5DN2100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35b453a83ef2b4672c8d92bff69ac1bf6a0fa4b97be995501c0a3baa78d0d1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SE5DN2100902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815746006800f639355144c8a797a320a19166b15ad0a5264cbd3d662ddc2044. 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/SE5DN2100903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6424c2cba4658af0d883fe99999078b2b1deb67ef52bc879348616de363a3253. 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/SE5DN2100904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f193cf2d007d6eef023db38a45afb718bd6c63fc3c84f520a9f04238e43d42. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/SE5DN2100905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44670e0967f2e5816388a2d115bfa2f50bae5b4e863401178810f785e8c54a4. 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/SE5DN2100906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4dbaf1eb56d67e32e3818c94e46019e79f6562b151b6ee16696bf8eac4bb3c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SE5DN2100907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed77db7da5e71d7a6a003e30b7de093dfa137da3826cdb633e132462f622b652. 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/SE5DN2100908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c61c22c941ceac310736f064f2bd8703d56b4830e76dfef6732fe6c1ad0aab. 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/DEQD61200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84db25062d0acf6486ac75dbacd9e1b4c0f4689f9a34917338f94f602ece03ad. 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/DEQD61200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2329a3b6ae06301422ea81b9a43d504163d4980e85474accb8587a0ac4840639. 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/DEQD61200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77bbc5d21b0a1091655876fb48b85ba3aebdeb7707fa9d0304e4049e64b9d40. 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/DEQD61200246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf9bbb02423fe1260ae1e02525d4738ddb106016e32ac5f4a108c63bf7d164. 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/DEQD61200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040a75acb6ac66df6a22b75b4aeaf14f83d937b4c8473291640829f4b0bed13d. 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/USMBR0906225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca9a1799bc30a2704c9179b5fbe45a67e8718224a1a7155869c969ba1f6cc17. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USMBR0906226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1afec99b49f23ff02e81d9b23fea8b040a2937b18f8e6ce1d0b0ff7b5a7f53. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USMBR0906227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8271d572dc656f0df67f5cf04c58fc5f8c9b15cd9669f3a17c019f0f4abea0. 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/USMBR0906228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82355c168facf6c74b393c70a847f88fcbd9a060502dc65f5f692386d1c17c4. 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/USMBR0906231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69142b05216667ac7dfc655ee3f06e63b380db82bbab49f0a68122c908ae6d67. 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/USMBR0906232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e5527e8c95c8992e08b6c2872db3aaae389bece5dc0e85c6b2bd26c469eead. 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/USMBR0906233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265dc1ef96e053956999655645db45408aa3cc2572a1886f806d040a88020283. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USMBR0603247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abfb0d6a7a749da54fe0bb9d2bdc620cb6135582184142f1f5297a473116954. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USMBR0603248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef76c89777df3ce2a3be62edf5fa31c8f1852333ce5bbf18a2e7d6226f1011. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/USMBR0603249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b95f98cbc9155227d736c685c2a49fb376a1538dc9ac0a6630fc13c1d0dc045. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USMBR0603250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59dc999ea7077c45d2c59c2709131263ae388a81fe814117524abf329cfe70a. 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/USMBR0603252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecad23f111b5fbad864459e9abec21ca21bfa855a3f33af67b75c0dbfd95f56. 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/USMBR0603253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47f90d6dbf39ef61ff36ec97afecb01a2759371d7bdc6dfd50f2a1d1775fce. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USMBR0603255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccbdaf24693b11f4f4412f49a08755f9e7878015293b53e485624eb2ca4b305. 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/DEQD62300767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9df2440d714386415edd47a188c92d516edc47c216fab776cb2a46ee1019e8. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZTB32241218.