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 0x84e6de903361fe02b1a5bb4c74553992242b593ba0cab33b37f1aebb95036da0. 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/c82da778-7b91-46a3-802d-7e99142a4422.json and https://artists.proofprofile.net/proofs/artist/c82da778-7b91-46a3-802d-7e99142a4422.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 0xcbb84767332c645abf14c40f330393acd4952fe03ce696a28886359b55207481. 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/TCAEO1916083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ea5c47867b591a15e2793231fc0798f2e7435b60b58124cda25317664d62b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAEO1916090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d75d3b50fce4d6aeaaab51284a140b77be0287396dbe1d7dfc0c61d1e9ff9b6. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAEO1916094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46fde5f2dcb044ef2c6bf633fc9d011422c78b1d326946af73903500bc17b71. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:15Z), 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/TCAEO1916102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2767cd2f53027536fcc2137914bacab3a0f4989e371b523c1d0bd2f80dd35129. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TCAEO1916104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000676e51ee12cef4a87a8dedd1a9896a8cb8aa2b3c516370893ad7a30861de4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZFZ22401598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e38aa28f642266ab9367fe49b34448cc4cd681cc9e6d53a9d20370717d328c2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES62402428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e3fd7245fc02def121322ea9abe5c2392c2cc4dd2cd2a38a063a329f6b72d1. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZNWU2451032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e18b97cec3d6a6ad10cd7165467f26b8d49dff4029a6d32d0373626d720884. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:01:05Z), 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/QZWFQ2450280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d9e1db642274759b8e31705395c03dad90c9a25043e2ebe72e6d242a3f1343. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFS2430960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc27ce449c168b40a143cc050fca09b6b87e40666fa340a0e1a3ee406965d28. 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/QZWFS2430962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e3bf993b3bd521ba0e9bc0b4bfa936f3944f40eae72858e999760ce316d268. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZWFS2430963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ebd56ef0ba5afb4a469709e76c2f3a8e3563d86327a2d341260347ffc3fe36. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:49Z), 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/QZWFS2430964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f001de551d720e2c0a8e7f4eb85fffd1886dd076b190429ae49d0e36fb38da. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:02:49Z), 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/QZWFS2430965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b06a64b37708edf606719fde3fed3b9005e25f438c44eff6d537f43ca71b8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:48:24Z), 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/QZWFS2430966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c6fbe5ff622bbd83bcb64553b1e6687e30e1cdda9cc5dcce33e770f985f77e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:26Z), 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/QZWFS2430967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5372f09eec38ed99e3ddc1247e5cde3b35cd17260011ab890ed06171d6031a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFS2430969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b06a64b37708edf606719fde3fed3b9005e25f438c44eff6d537f43ca71b8. 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/QZWFS2430966.