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 0x33680a701b5d88becdeb57d140646eb1bed2de52d16d36aa30df975e8262bc0a. 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/c7e5c3aa-9882-420d-aa70-850f81182f79.json and https://artists.proofprofile.net/proofs/artist/c7e5c3aa-9882-420d-aa70-850f81182f79.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 0x84858405827bb46c0115d031b2d030d55ae42572808fad260fdb62eb45dbdc26. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:33:23Z), 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/RUA1H1863469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9b5008ea737c6616eb83b88a94446d06fddb4e4abee5e438d20ff7a93e903c. 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/AEA2M2347440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0a44d81fa19dca2a19384adcd4e7b0740ad6bd1884620396694fb4754c341. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:42Z), 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/AEA2M2377209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4e657603dd3e52a2320a2c61f1f6bdc8014237d3b2a28b5d25ce83cee620a5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:40:35Z), 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/FR10S2463054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d035a98d4179d9242c7b0a3c232fb5e467c7b852896a1a3da00ff29aa0061a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:08:21Z), 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/FRX452434459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71731c5a30397fc5f771729b376575a2db8fa22b102799e8a62b3a624db05cac. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DGA062346230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672452c855eaea84233b0771c95812aafebb90c3712b0eb6c114de8c8db88e1d. 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/DGA082369602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e150e2bcd352f12f5a62b1a1610d5c9f164c9a462cd12e6a2308770697dc144. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR59R2493075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fde6141af5a49a33741f5d4329b481ab0edb5ad88cbceeeb504f0e440df1b6f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA062425153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8502f8a3b70876cd26fd72b10b121d2ec50c5ca15107ac30a6bc0c9b5ae3f88. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DGA062487187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf96d49ef98cddf1e855bf79aabad5bc613118131e9f724653be059c28365b15. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DGA0H2425787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8670bc3deb93619e2994c333d390a8f82bf0b1150a89b232016d56590ae5a963. 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/DGA0H2425788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f4a27fdf2f3435c5d59689976b9fcb55b22f7f29587a1ad8b0607f0c24dff4. 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/DGA0R2451129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb5b2d691a45210e4aa4251c0477c44713280c1aa2b318f0cbb7ed13161c84f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:47:50Z), 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/DGA0R2451131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4488c9b00e2efc46cb0d4b8f9abb24b42f00d9918564aabd24b7604d085530a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA0T2435336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9085bf8e7da77c54fed1d3fe0fba8c910cec3b79768c20f8189a7b538aba259b. 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/FR59R2550888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b27ac751f88c6992951c81352d1510c709f68e078fc945a3fb0eab448de1353. 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/FR59R2567708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4826d8fcfa2aa6a5ac39eff3e21e268170591f9f00f82fc9e1bb371de0fcc5c. 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/FRX202525456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b3556578e6dd05f17c44cfc7642dfa4ccd694761614316ae23376ed9f06c68. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX452508940.