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 0xc23c6338277d9521e9a66f8a74be4fb64bc6b4d00becb30c1c55e8d6fbd56dd4. 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/ec58caad-5eca-4718-a898-cb8dc9325af4.json and https://artists.proofprofile.net/proofs/artist/ec58caad-5eca-4718-a898-cb8dc9325af4.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 0xd9947d44114d90355658c2f2e64595c4c49d90f8f0fa8a0d224805c63b3f1cc0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZYFZ2303165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf287937f0fabef0ae0d67d53a4965f1a4cde8e3be46f600701ab8686b70b10. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZYFZ2312499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b0343d070d5b59c58dbe731a57c25e7455177f144c8f66c74ad751d71cfcad. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZYFZ2384325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b4f0a3d494a0675527041330e7824267d3b0a7c6f62edab7c5b2286009da20. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZZ662349247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3878f7bf3654f909c24e317d7bdbf4639f1ca653731aa84e310e5eebc43d30f5. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZZ662415467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a9c7c075fb557260c6d4afd0d8f7130ae4bc923c0ec805b3f45a5a7fd40888. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:56Z), 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/QZZ662416268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ba60c17275d20a7b5fed39fb67aacb460f65e347aacca08b29b007c1aa460. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/IDB772105882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d5ac108f0cd34c61afaa173b66669c7d14965570ce7d2dbeb7a9ebdb00ae1d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:00Z), 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/GBLPF6797398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bcd5cf239e4a1a2654403060eb97df703025e601d59cf27958c81d280e5706. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GBLPF6797395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44aefa858fe9fd1cccb3a0d4e84dff5443b317836dac4b247d74667d4ec6811. 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/GBLPF6797405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82a2f22266884de9c6dcae3d480f83de9f769f12fcae6f190aae5c133b9e9a1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:18Z), 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/IDB772106997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40e181856ad568fac69f2ed6950e3e8b0016960aeee67cec3b41e445c9f1a80. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:43:57Z), 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/IDB772107889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8188c0d689bee3bc905335615c99428d0682c0377d6fcadcae58daa9de40d41. 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/IDB772108166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e37dfc7bac696facc4190666d8a6a4060c36ed3a0fe68cffc2eacb5dd925341. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/IDB772110041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b6d490317bde54e19d032a6263edf21a41d25feb6ab142bff24a3416ef264. 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/IDB772110131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d56165ca9f8da99b6c880d66c8bd38eeb533a5562f767f1a2ffd9e3026a2a1b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:35:50Z), 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/IDB772111568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b8ef38a63f2b38765635d1441d72cd338c79c997afc6f2ce740791d0beb3fc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:42Z), 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/IDB772111984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfa032870e5fbe77aeec23c015582d66cbac652ed5a330b6a2023408477834b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/IDB772112121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f02c592cf77e4d396e6139d85cedac4b471906654f646097d32700b41b394d7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/IDB772112209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138c92ea6092f9f5fd4d8c9f881bf0e12c405bd7b591653499a84e4ffd60b3ae. 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/QZWDW2507434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab4d494d3a52a49278bdfd408abec3b4c6e9024934da0347ed292d07a334f4b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:30:34Z), 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/IDB772114167.