October Tide is a Swedish death-doom band that was created in 1994 by Katatonia vocalist Jonas Renkse and guitarist Fred Norrman. Norrman revived the band after leaving Katatonia in 2009. History
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 0xeac2396440725b1e92ae1b4ead792ff60697f5a07427e99922d9474baa4b735f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b74e026a-627f-4c33-ae4f-dce7b330ba82.json and https://artists.proofprofile.net/proofs/artist/b74e026a-627f-4c33-ae4f-dce7b330ba82.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 0xeb8a463d45ca5cbbc57643fa793cd40bbbff5ad033e31548171e69cd30f86c10. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBCQV0700892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7af4f9ef3914b64ffc135a7fd45384837adf1c1e1db5aef34373664616859f3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBCQV0700894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7084021c6a0aac7dc890c9f22bb3f6806e8dcbed7cdcf7d5d7ecb75261bd9d8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NLW500800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a246783e16291b4dce9a410701937c7f496cba56841d5356190b69f7fe17f39. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/NLW500800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ab41c791ce0091c22968d128641ea8511661d1810fae052f5ca8f4836c0271. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NLW500800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e68982d9607abc206368718415620bab456405876a14eb30454aab393c7a50. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLW500800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2147908f0891377e4c0a000d09d72434d853887f63e3659a3d45253f9039ff5b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/NLW500800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ccab9d748a02091e51094d0c59d9e7df5d02d68859c1ebae9f49de63ce575b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBADD1031801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d83f28eb086d57b8dcc159698b5f1b3c06c12b8cdccb9997fb85eecbd1e72ab. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SGA511310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b1472f7c8bceaa34e1f3c9c19cb9fc437ab01ed291c703b658b9c7da433bb7. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SGA511310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1780fd975b606f19b2f832aa6231e1cbda6e7a9569ee2a3d6c5fa56a5f61abae. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/PLC171900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84339c5685f1724322bbd2ab2bb838b44fa2ea61d03fcabeaca94c7affa00f40. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/PLC171900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36fac60cd9804e8f964de56ba327e0d96d1e98d84f6ea83f3f0661e0bfe4fcb. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/PLC171900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf2c64ae66770f5235918e582e1af898dc1d8cdae9056f4401101f473ce94fb. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/PLC171900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa9411d3c115457d928533112392ec9dd9b825c358cb27dcda88725ed1c1cdc. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/PLC171900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3c4658764a9236edda08b00bf2d9066101656fdb81fab04f3b236e62f400a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5S62108201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae7a57da68afb1dff8c6dfc2c1344067a5bb640789e33ff73eeadcaad9f9984. 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/PLC172300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175f461886e76b0b67ec4f638b7411b4c171637795842af1359fc1dc2f84a78d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/PLC172300703.