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 0xe07a3da935cd7d2de843adefe7270f697956a78cb9f9ea938a7b01cb7edb61e2. 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/ffee4ad0-203e-434e-93c5-4ca6b3170386.json and https://artists.proofprofile.net/proofs/artist/ffee4ad0-203e-434e-93c5-4ca6b3170386.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 0xa5e81d668a95f56ad29e15df751b4991cb42b41efad170c0174bbfe127b6fe0a. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZDA52327012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f5208362a5d0fb76944ddf146b52bbd9c88065be6b19478c968570f21dc265. 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/QZNWT2320338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dc709008c6115fe9d2644d4cce2747dd83aaf2d445aa227703cca12b78d915. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ32432406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5189688159ba19fe31c61fd6152a2f16b41cb8fd2cf5ee81e4da284864df6983. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA72402350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da44e452b9f103233e216bab97177f89adec64e9f3e2ea65be5d9f7c61793bf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6F2457640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767902554a3f5c6beee53b99d03f11645350d9777cd31b3ddfc2724372f38158. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:31Z), 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/EGMAG2490201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc29599006a0d472a6c801e3ff2f5996ede35f23905ca4142d3a869bc20bc6a8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:01:06Z), 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/EGMAG2436919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc29599006a0d472a6c801e3ff2f5996ede35f23905ca4142d3a869bc20bc6a8. 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/EGMAG2436919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6ea54671566c90abb5659ae7a7ffeef3fe27786f9aedff0eec400ce6c7e3c6. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/EGMAG2424541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674a70c6c5c80c6d1694b639296b1efbd5eeb89eef5e5f371e67e9abcb46b318. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:47:21Z), 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/EGMAG2465995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3b105ac612e79e70725e7dbf2bb187375569b6cfafb7ece1dcf96f04aae9e2. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/EGMAG2513594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3b105ac612e79e70725e7dbf2bb187375569b6cfafb7ece1dcf96f04aae9e2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/EGMAG2513594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92181a11cc314940434b5ca93ac68e9feed602575b780c4f27d679223f1ad7ca. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:33:20Z), 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/EGMAG2520160.