, sea oak is a species of kelp, of the brown algae, best known for its use in Japanese cuisine. Description Eisenia bicyclis is indigenous to temperate Pacific Ocean waters centered near Japan, altho
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 0x0f609524f6a06ef12bacbc2da8e91ae253f981dbe43e383d4583579dabf9903a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/290156ca-3522-43ea-9f1f-d3f5be89ed17.json and https://artists.proofprofile.net/proofs/artist/290156ca-3522-43ea-9f1f-d3f5be89ed17.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 0x921ac116af22156a4424785b3ec0e072d1be05a1bb05ad9af9963587324b1554. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR59R1642176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dd006a31afe225ff7f291e7ad7aea7430833f50d1a750e05adbc1cbd6ee4d3. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/FR59R1642155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e0c4127632e25010c5623321d16814f3a93268762ab036a905d57631e778b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR59R1639973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98eb4a0352342abdb0a48a57c729f8cf13a42fe54df463bac89e6f22e686d9f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR59R1639976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64663b80df32415df78847292f01c88dcdbb9f3227a04e28397b711785c28c63. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR59R1639977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc4aac25c4b3a67a00593d9ed9d26e7f4926de4c0557309bd7c2abfedf0b962. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:47:19Z), 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/RUA640905575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008dff1b6f2c9ec19c5de6afcb67efea3c9a816a99332e89e0f46a1164aecef6. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCACX1700684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09351229aa46c660e78f7e1ad7bc8c8e1204582dadd5cefe2fc5d013a21e37af. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCADA1708058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510cf266a15e538dce968580f2391bd9b5c5de24abc3c964aafb42059f51915d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCADW1890841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd4aabbb4fd186bc47540fe91e11fdc8e4a24da20be0105e070f6710545a050. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAEE1902787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009359adfaee1399a17d70aee8258bc500a97a2fe5ecfe2e89193f8e23f8c8bb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEX2081085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b13ce587612ab1d97b76d5b1222a18555bfb54c8b5e07e7c0968eaa9ca5adc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFN2111844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe35e54e0106232bab46e58e26a4c1af3dbb4182263df170e37a61f1e485feec. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:08:17Z), 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/TCAFZ2299218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45d478b6baf9f5f50de8e1c22e1a75bd7a137628b87cf87e30f497f39112365. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAHB2311178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeef661515952a3daaeb676de344ef407fb8b2da24765cf0d94cebb48371ebf1. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:47:46Z), 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/TCAHO2320403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6a8260ab448518b290b07315815aded877db37128a3af460dbcd061fb06eb3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAID2467216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9dd10c7bc655d9dd153a55d51b297c4e429ca313ef9be01ce1f7e1549ed8e4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:13Z), 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/TCAJA2478188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc990432c24b5e2ac19e625997c51141f48e783d95b4c5f1dbe0f59353e73df5f. 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/TCAJQ2510936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce1507dcc232241a59d7461554f5e399c6bfa735fa1265be0f2a27a0b69261. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:24Z), 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/QT6622567223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804109a8d6f0532fe1182177c4c026ec8558deaa79dc998da30986bd02ee8c24. 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/FR96X1734838.