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 0xcf4d04c3fb22d6a3373049c405e57d7a286bbbda6d5e06bb633d2c581a75abc2. 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/a43dde11-07aa-4498-a786-3eba6650d77a.json and https://artists.proofprofile.net/proofs/artist/a43dde11-07aa-4498-a786-3eba6650d77a.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 0xa94c7db57ce17db2b336a20fe78a18b5e7ae988503d463fdcb6534811a747708. 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/QZTBA2335711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5349cae777cca1b648770f858e425a24902e6177caf3d1923e91d0506a4f67. 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/QZTBA2335712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859fc928c4c7ce18692ef391474626324c5d9f201761ffa5281539fdba10e2a3. 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/QZTBA2335713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dd5a8505c33688d4fc89a9d0ff529cee966c188124d184cd5911eab139d604. 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/QZTBA2335714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa669976bffe5bb92349432101e63a2656f2136b6a5d3a3531b3e664629a4e0c6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZPLR2316813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b203a33ac19a52144f0fe82bb39a5825613a809ddf71f24d98623633f503b09. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA22468550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34ba6de834f87249fdbe4e5cd75f1f68865350c6fe59fcc4e8fa6eb3c059cc6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP2453273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a6eebbd2327cc4ec54c7eb63506f0a9b852e1cc91c2d5dcb42f39e5d06c642. 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/GBMA22468551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064823abbda29e843c360fb64e80c54dc90bdb268e62042f6926915bc07a90c9. 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/GBMA22468552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec595497f9dd286087079ddc27b677ee467034025179f2f63c0239d13049033. 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/GBMA22468553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4110fa8110fe769ef2d348957a899a8a7efef5ec0de0b7371b8bd58a19e09ad7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP2413818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4614fc9491258e6b05922cada2519c3dedb890e6cfa1d5eda4849f726986f16f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA22468554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd015545e225a3695f1da81d14768aaec910be1bc381e52d875ef02a6fe224fb5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKXN22399891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de9db551b3d9add08a68ac1429293509ed8f3c60f95d9f8c82940fd844ee1e3. 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/UKXN22493243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d5052d033529c4f952a1604b1d63897022acfbbaaf72af2a7e55284e5571af. 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/GBLFP2494621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27524555173c8f89766cd7b5499f25b65ad696b6e0069a6aa30ba067c325bb6a. 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/GBMA22468555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f4744d467562fc6c8ec6369b9254b79866ee9e21b9317d57f19ac278aa0daf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNMT2340252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cd13d30c8b760f3b00a061240e75139379b176cd3989324d893eecdb4cb07. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIE2465185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8f6dad604977861b93974816261f24fdbe8728115262ca8f5519845db71f12. 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/GBMA22457516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cc27102e64b364d2f0830ed25932f39872c2ef4bd6b269d0441ed493d6bdc9. 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/GXF9Q2539492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404d3ffacd24b77171bf02f09e3961e81d589d8a6c0417bae6384bf356e964ab. 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/GBMA22486807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8f6dad604977861b93974816261f24fdbe8728115262ca8f5519845db71f12. 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/GBMA22457516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de9db551b3d9add08a68ac1429293509ed8f3c60f95d9f8c82940fd844ee1e3. 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/UKXN22493243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34ba6de834f87249fdbe4e5cd75f1f68865350c6fe59fcc4e8fa6eb3c059cc6. 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/GBLFP2453273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4110fa8110fe769ef2d348957a899a8a7efef5ec0de0b7371b8bd58a19e09ad7. 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/GBLFP2413818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd015545e225a3695f1da81d14768aaec910be1bc381e52d875ef02a6fe224fb5. 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/UKXN22399891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e4afab6942cd5ce55e5f8102f1068069028fe77d7f626fbeb3091a3c78ee67. 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/DGA072370046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcc3a0681f4c08a916b0031eaca0dc313d33282b99f3098f21ba5cd653e9d23. 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/USA2P2330347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcfd98b6c1b81e1cbc159e847679608965a56fc87a1cc82ad7c49bd8aa9cea7. 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/QZES72326537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a3a2fbce265c526dd9456edf9f3a979fb077ae0999fc8390e29030d26a5876. 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/QZNWU2269127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cdc1ca3f4d1d88832a2560ac52cfad14ca176d95df65555bbc4f8f53d6e0f5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWU2269128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b333997aff4c4caf1bbddbd849b1bb64cc63115ec9b8a4b7f59d4f71ba0bd02. 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/FRX762241793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3dc20e48ad4c9c3a2464c4a6557b66ded5bca3a3e82c1296d834d65321bd4. 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/QZTAT2201091.