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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e791606e4f2852e4fc65104cb5b6a80666f786714767f96920498bfeb9c579d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). 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
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 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/DEQD62300767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb98d611493cb4fcd2dc93bbc7bedbef6402599638eaec69dc3256d43f35b30d. 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/DEQD62300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e5d7d834f977d4424f5aa92f004375ba1c1129b94f753d3d84be1603232875. 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/DEQD62300771.
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 0x815746006800f639355144c8a797a320a19166b15ad0a5264cbd3d662ddc2044. 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/SE5DN2100903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6424c2cba4658af0d883fe99999078b2b1deb67ef52bc879348616de363a3253. 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/SE5DN2100904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44670e0967f2e5816388a2d115bfa2f50bae5b4e863401178810f785e8c54a4. 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/SE5DN2100906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed77db7da5e71d7a6a003e30b7de093dfa137da3826cdb633e132462f622b652. 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/SE5DN2100908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c61c22c941ceac310736f064f2bd8703d56b4830e76dfef6732fe6c1ad0aab. 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/DEQD61200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84db25062d0acf6486ac75dbacd9e1b4c0f4689f9a34917338f94f602ece03ad. 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/DEQD61200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2329a3b6ae06301422ea81b9a43d504163d4980e85474accb8587a0ac4840639. 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/DEQD61200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77bbc5d21b0a1091655876fb48b85ba3aebdeb7707fa9d0304e4049e64b9d40. 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/DEQD61200246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf9bbb02423fe1260ae1e02525d4738ddb106016e32ac5f4a108c63bf7d164. 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/DEQD61200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040a75acb6ac66df6a22b75b4aeaf14f83d937b4c8473291640829f4b0bed13d. 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/USMBR0906225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8271d572dc656f0df67f5cf04c58fc5f8c9b15cd9669f3a17c019f0f4abea0. 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/USMBR0906228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82355c168facf6c74b393c70a847f88fcbd9a060502dc65f5f692386d1c17c4. 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/USMBR0906231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69142b05216667ac7dfc655ee3f06e63b380db82bbab49f0a68122c908ae6d67. 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/USMBR0906232.
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 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 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.