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 0xa3245a550c3efedb5aa707b241ecf8f8272a1267de3a6b54f2fe00b572794fa1. 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/6aa93298-419c-41d3-a979-063ca083f118.json and https://artists.proofprofile.net/proofs/artist/6aa93298-419c-41d3-a979-063ca083f118.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 0xb920af30a1a8b6a90d11bbbfa57180d95f522ceb4ca3934f639f440eff7caa27. 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/RUAGV2405067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ff5e66b2c1346a318c166803dc0be76dae3c490fb2f1a65e5c636f3b82f63d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/RUAGV2403984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea75bb99b65235d44ce0f661ba8ecab583bb5dec41552fba29e7a79cafd83f4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUAGV2402850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e0f38f6d20a3f52745bbdd5cc58a3a595b06c0147a393ec54f220f8036c42f. 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/RUAGV2401622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b1684340b0ec40b324009e805701965a195c23e11786e82835bf524f711110. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUAGV2400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5194ed54106dd8ece040dcb26b75e22ddd7027cac29dec82eb4c7e243b64cb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUAGV2305912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1592bc3a8b72f945f722b8197f6e6213cea38e33afb508d8175c369f8f2af2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUAGV2303628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3661ee15cd60a0e0bdf55f41bb1500a8f773c78dd5bf5226f353ffb7169de7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUAGV2302373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463d73007197ba87cf1398a6fc4e7d0cf6d05f57434be0c869d5d2054871b70b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/RUAGV2301378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b5e2a2b5b65b86ace38f39ac7374c849357f9c5637ff9dbbcce7d14bb55e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUAGV2300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d194950758b8cbb8e447bea967a82d7b45687f6e0ffae4cc60869aac97eef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUA322203146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895ff52c1cdda7393545cc7ec7fa93bc8567ffc08be695e570c16da5e8cf3fcb. 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/RUA322201197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a62c0f00ddc65b22bb27f027f30c654e464e4c8f8e3cf22f8ca2f91f9e548b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUA582106994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8ef932d3d223643e55d7e26888480ce105f8cf154f4f3922d9a7438d8c2cdf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/RUA582104996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ae67d744c90f5a949dfe6092e2dd851c3815498106b33ebd75fcbc4e9a7d2a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA582100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603eb280ab17eeb360315b6385ff2bc8e3f2a2ef28acb240db1a689a0e196af4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUA582002531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230ee210dd9fef3bdcd8b1849513e496e786e8faa6c29a8076a569c790afb33e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUA592000813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a75944cdecdd710bd769a53e6523249bb284cc8a1787be31f23aaedb575033. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/RUA592000636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1438046f77ea3f6f23e629d45635737d195c4bf8a73846cfca67aa19dbd40b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUA592000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73aa9615a5fd83e6c9f2b29be834c776721925e6384994fb6c41bbff12878a7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/RUA591902639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fd41e5219f326fe6d0c800d109def13fdb591e79f575532bce2260f4cbc017. 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/RUAGV2409027.