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 0x7b93d3224e80ca0c0a6855f2b9fdc4ed31da963061b49e9619ba19d8e8fdec66. 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/8393cafa-c643-49a8-98a4-c0615041e8bc.json and https://artists.proofprofile.net/proofs/artist/8393cafa-c643-49a8-98a4-c0615041e8bc.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 0x4af2eb7a4721b066262274d31f7b54e638ac2e8837914fd60ba30ccf9dd49ba6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZHNA2200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bb4e82a032920d1743b0e5026a64535092e071a863963be5d62cb607cd8175. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNA2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3311b3c77a0d43a87f5a981642efd1a257e67c043030f0229541786137ba8ff0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNA2200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d91282f96ddc93dae3bb4a2ab8eab28bad64c2cfb16c0b0f60cd3215c7f59f. 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/QZHNA2200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a891c5cd42011c64cddca3db5c41c52cb94e87c1d95d4bfab6b8f3415ddb967. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNA2200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6d59f6b7a4bb288a5878d4f59525b92cbe158fb2eacf33cc636847e8fc255d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZK6M2293789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cd1229838d03583b22e6a22ac9f57d319c7d1c9a530c7cfabb194de4691c83. 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/QZHNA2199578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fd66ef3f2499e072512f27fb86e0aaaef5ef01dce72a4d078d81620b499cfa. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZHNA2199579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca7f2287307343fbf53579e5aa8c60127068a1af2cee977ae50091f6a2a9f76. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6J2162232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbc990576a0becad9ef848d713be74c598a60fd7c25b416ee6e13f6546159fa. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFYX2258140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94ba8f1990e9d6c4b4c7ac3ab26ccf9e4eb37c5d7a90cee234857d1090e1338. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:43:21Z), 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/QZPLS2137110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b5cbd4b5d4c5788e1134cc4c5cdf1a1b064a288dfabfce133db23c37adc455. 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/QZPLS2137111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daacab3f2870045ef5ad7904fba968c56d24092085643d8e9d0282ceeb7dca3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZPLS2137113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc673a6f4d30e72111eee04df2de027bc0a47b7c5db793b933b13f33471131ed9. 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/QZPLS2137118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b21be7c7a75f6233bd4fc8f24c5994f4debfdb3d751e63bc9e440cd1f03fd7. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZDA62206054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634065b49cab917b6fa9959005a3b875721249ec19f9ae32f47650393880d16. 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/QZDA82275416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c4b6f0e08bdcd12be44d28401cf5e3b4f0a7b0b962e45fadd32f671208ae3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMFMF2305999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c477ca821d5eabea41bef13497679620e499cf73f5a3c91c9cdc23d79b8898. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMG2378478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1475331ac6361b754523800da55ab2946d5ffa85acc9616e5bbb328a4bb100d9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BK4DA2411385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c25c82c0e3b9882c3c985c4a59ca01850c73913d8d9ed078f66ded721b55d9a. 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/USANG2413337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b69b51ecc0d9ed9bc6abad020b5e1b52a04350464b532cd42349758cc3b1de. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USANG2477370.