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 0x2bd94c233c9eb953d8de0a2d676d477a5de4cd40deb50f2284ba16bd236e627d. 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/d6ab3a5b-f0f8-4bd0-8628-70fc1a305f3b.json and https://artists.proofprofile.net/proofs/artist/d6ab3a5b-f0f8-4bd0-8628-70fc1a305f3b.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 0x511695297c6557b9940e6f058828004b9895a4e56aa5e8eb0411aa80943d210a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/NOCVC1510020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3124071526b1ee5bbbb1099ae1b613dba0cdd57171f2fbfb71dd11aa2ab4b52d. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/NOCVC1510050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825a60e320f9e7ad22f44887221f3c875130aaa83fb9a038eaa4ab52764cbd37. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NOCVC1510010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397190c04220ad4b2e34c5eaeca5e6d09876014245a554dac1056a83ad70ed59. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/NOCVC1510060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13af9a6d1c68d455bf67fba8bf4dcb0b654a9029244ea4a1ca7336ae960b58dc. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:42:00Z), 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/NOOR81815030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b6c0d5adcf2fe9828b82719ae78e1fef0e711cfc8bae8dee16433604a299b2. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/NOOR81815040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e243cbd2884dcfed2a7ef5797dc3babc57edd4e8e96109c21182e2b3dc1b90. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NOOR81815050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff2e15970c738efafc3cbd1211a287c499886f9dd35f498fca3fbd908d3a00e. 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/NOOR81815060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445b4e7fcb79fd54ebeae737c303a78058d9f197ea973302c27e9c7cb49e11a5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:04:46Z), 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/NOOR81815070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa938a0038a7e4bfb1a24048d33c7978c235a6fb9db5fa075326b36a2529e6eaa. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:07Z), 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/NOOR81815080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa857ea12e6ac7f145994cf7bd2731eff5c25d824a528746761007c71dcaaf401. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:38:53Z), 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/NOCVC2079010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685f732c2f9e9fc97cbbc88f33fcaf4abafee95ce5310254ab564969a34de1ba. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NOCVC2186090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c506b4e31c7a83f0a99350b0a06949e52e8c2290d7213cf24e675d4ced80a1. 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/NOCVC2186030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c855fd20e4739201ffc1dd86bbf921b14773c4d4fb65442ff2e500229097c75. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:47Z), 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/NOCVC2186010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d14ee0f906a3b67bf2adf3a527a45c0f6da2c75d612d25505ed5d9f3416be6d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/NOCVC2186040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3012295914ceafdc06f4814b93f268933685bf2e29568004be3ecc242717fd. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:39Z), 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/NOCVC2186020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027667595cd6a7cfbae9b8f531504f465a46d291186f507d9ba3a4b984688a4b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NOCVC2364040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66cf75cd7fdf969fc8c79ae1733a604aec4a5fb9d3680b17796d3dffed2528e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NOCVC2364060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1eb28ef954df8173a160b434025f4ae8e5278cafd4cc33e536f6a1243ec9b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NOCVC2364090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d464ecff8e8ea10b53bee14a1852256d57aa17459b8a54e75205ada6f66a3d5. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/NOCVC2364100.
DJ MøMø presenterer: Bukkene Bruse på badeland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92af598d020012546751087ad94f4664e5e547cc7aac8d2639abcc0034732786. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOOR81815010.