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 0x39c95ad2d37f1ab8533ff67968fe820bb6e54674770efc92be4a0d03fe0eaecc. 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/91ba090b-7242-49d2-8fb8-4a99c55ddd8d.json and https://artists.proofprofile.net/proofs/artist/91ba090b-7242-49d2-8fb8-4a99c55ddd8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
River Flows in You - Lasershow Pacific Mix
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 0x7baf29db3671f3918b79440a58b37b5bae8451aeff804ab404e3ff246bfbc0e0. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEN061002821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0184f57c5c3b387c15ea48000078bc623e2aeadeb51ee082bf947c30344c759b. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/DEN061002817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b288a275e7083f691f10f26d2bf778cff9d2eec102bc4b93beab20c2271a851. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEN061002818.
River Flows in You (Eclipse Vocal Version) - Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81489c59368323169c4f2026b81b3a5010dd78eef6d81d8c78b08b3b28226e84. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEN061003443.
River Flows in You (Eclipse Vocal Version) - Klaas Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45530d070d9caf74827b3b3e1f43383458e02b0df25614791ed45a10049c608. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEN061003571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3f572a9d40cdd435b2d6f6583dbc04810230ef2e13a0847126ae98f55ebe11. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEN061004427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da0bd482630f86ba28c385d5c892d2f2850fdee9847084d13008c568d329279. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEN061102326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f7c5832469c2b1961469c375473c879424e3b2faa7597dca238595d8fc7eb6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEN061301731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd2868bd4b9422cc59bbff00f3a0e8c04f81bb3d4a3e7d187757f2d537447fe. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEN061303036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd2868bd4b9422cc59bbff00f3a0e8c04f81bb3d4a3e7d187757f2d537447fe. 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/DEN061303036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9d35f5466fc1381dc8ae4132812a07d5c5e23d7904eaf1cdba5fe0cdc8e2d0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEN061401793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c2beca62f351d882985103ba5f967f58aab7b9ae2b17d77a88e2c739e017d3. 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/DEN061500962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180e199f29492c94944e58d0eb8067d8c555d5b0191fafac29dcc2da73c87351. 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/DEN061600620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb55d646c72ebcff9a1ea39c8c2e4c8d3eb8e4c05cfc84ff791a118621788b7d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEN061600522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cc049e916eef6d41e3ec953376690cbfa604effeeadbb098e0af34b45f8499. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEN062300795.