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 0xfc7da59c4c8def9060c7ccdd569b22a149e2064a6fcc6d41f371e66f0cac4969. 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/b7bca846-1823-4f6f-bf86-6e357ddf36df.json and https://artists.proofprofile.net/proofs/artist/b7bca846-1823-4f6f-bf86-6e357ddf36df.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 0x4fdb20f54c08e84ee7d6406b9789d67aa9b5038f7bd3f95e7bbfc2af0140588f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:55:28Z), 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/QMAAK1875162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecfec1f3c1a3bd2ff854ee703b8314f42e8e688ecc1ccb4fb87032233bf4105. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4R2135774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c95c07c808000866d53966fc0cbd5fdf2b32038ae98d6939038d719b5975991. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:46:08Z), 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/USL4R2135780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6d3acfc134ac7b9d49400f2083d6ba7518ab4ecfce49b9062926e036458824. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:51Z), 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/USL4R2135783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24386bf2547bc35459577d47e9aaab9c199273a8410140b862f542240f1787fe. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM82390197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c6119f8d31b35e0ec1cecb5271ddd740310a8dacc7d5b49962ad03ece1e13a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:19:29Z), 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/USMH92302346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ca992adff8e55b05a1555d96221897189450dc5aad4ad7dbb360c818e69d6e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USMH92302348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f01ffcb2d8b05a4c4290ddcb23e012326ab7513dbda26f64fbf6217aca68ec0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USMH92302349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda52b02969c696b69ed03537cbaf02f5c4f9b3821de10b3477d7e5c1e69e4a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QT3TB2402158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d92d98b4f1459d89c185a3d103034411ad3964906841b7ef7316816c5299227. 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/QT3TB2402160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda52b02969c696b69ed03537cbaf02f5c4f9b3821de10b3477d7e5c1e69e4a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QT3TB2402158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d92d98b4f1459d89c185a3d103034411ad3964906841b7ef7316816c5299227. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QT3TB2402160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a602b5fa80b6a3fb3a75307b19970e590b781555cde10365c4e92d5ff80249. 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/QT3TB2406662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1e3d1b6864c6f2e8a928acac4a7a197d5dcd0ac3bdd54460d4ef6881e8309. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QT3TB2406666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa271f7ef397689a9f3ae6247fec8f33c7bc3e5355b25ae2e936169b60b535057. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QT3TB2406667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dec7f33a7e531118ce742df5cc537d7310f9656fe7bbb31b2aebac141bef325. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QT3TB2406668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2755225224198fa363ea99e9a493d053849d8bdc76b2970dae6b4e197df396. 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/QT3TB2406669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc584d6e171f1056199b170ff604fbbbf71b56e3ac81b98418bbddca7cdfcac37. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3TB2406670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf395d37864267122f565ee9336ace86807d876b1a9baafdec53a603b7d4e0047. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:12:21Z), 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/QT3TB2406671.