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 0xd9b4004d1ba84626d4493cf82c0949d8fc849ac87af359b0836c34b5bc60d722. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4e07d5b-3454-4d1f-bd64-08a4a2f7fd98.json and https://artists.proofprofile.net/proofs/artist/f4e07d5b-3454-4d1f-bd64-08a4a2f7fd98.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 0x60952cb1bd6e38ebf8aef370316d36a57beeb5581e67d2e34224910f0b39f178. 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/JPWP02401093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fcef22943f76d43f29940ff3bfe95662f149560f68ae0f867ad2d4e22e163b. 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/JPWP02400965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b11faecbf65f1efe35d649bdf874814b4bcb960354214b699628069aeb3ac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPWP02400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c196e4c716fb9146df97ff9272d3f36195941595ac43cecc00cc42c08ad8dea. 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/JPWP02301371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33461699f739f1832f44ed22cd983f80da6935d548b06925befd1c10042b443. 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/JPWP02301315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d718523a5a2be390f70888257689c9bfb16195d833ab45304306d970a4dee0b. 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/JP92N2347463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d25294a638f422d2d09b74882f19bd953e6ee44c27d2b64b8d0a836906865c. 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/JP92N2331943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcc043a8742841e9eba0bf2cb10b06b75c02ae91dbfd2fde7d3f049bc597187. 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/JP92N2317893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eb6198c3b40d3c7192dec51c72517a20860e4d6ff1f8cb3e99ce1c556f52ce. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92N2312659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae18a7db65106e44e2c5763323185ace618491e2d8e640b342e06a375c6e29b. 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/JP92N2271917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206ccbed4e9468be64eddddd4d535ccf4966f56075fed699e07b5da75df1abaa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JP92N2260081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c20b8e01de268554c2f3edfb7fcd186cfe086f0ab3009b667d8a83c4e2f5b84. 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/JP92N2200821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb687f5a6f7e56484ff5404048f2fb37c8ec1a3478761e89681ea8c501b837c40. 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/JPB602194270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219abbdc79ef2e6ec83094fb38671063778811d86451f15dc5096d2028327628. 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/JP92N2501447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60952cb1bd6e38ebf8aef370316d36a57beeb5581e67d2e34224910f0b39f178. 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/JPWP02401093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d7afc519d0d13fa7528a97d1d4cf66bc95c4f435fc6935b5b3061f09af41aa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JP92N2501448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659f5c0703c71d36dd0c8817e88d871198a81ccc088a712274d2869c72d0c2be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JP92N2501449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a3879ec591d1642ec13bedf2b9da90a688263a7af2ea8e163048d64b37de47. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/JP92N2501450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ebe575014441042f97d0a5a805653c9e43f5474ad8736b5001a57157d17919. 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/JP92N2501451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c95c47fe2e62bdd8715a973547f5cbb6938f37f1dd1b87c20e221be7d1c5a8. 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/JP92N2458173.