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 0xdf6602052c2e0b73db2cb4cd66dd9223e4f08874dcd29edd25aed90e38a2ef9b. 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/2e969cfb-4db4-4e3d-b5d3-b7774f4cf1ba.json and https://artists.proofprofile.net/proofs/artist/2e969cfb-4db4-4e3d-b5d3-b7774f4cf1ba.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 0x378c219fd5da8e6c800a487a23f62cd64cbdc412cfb4d086c7c8ff8fe861a1ac. 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/BX6IQ2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744e0da58d5061654968227726ea1129a0db2f30870d601ad3ba633ec5820736. 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/QZDA42449372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473a1a70cc8080683e3be48979474f17217010623c343fe719ccaece3cccdc9d. 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/BX6IQ2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c704cae6a4a0722dc97b66458138d0a12fafaad6024a7b70280ccceec4825d. 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/BX6IQ2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764e878be1cf77d3e4708e0fd5ea1118378214b28b21ac00183107513812c14d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BX6IQ2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6ac557dda9838e31fb9569f811eef83a88f7dd2d5604d1f19c04f2bf6fc721. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BX6IQ2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c704cae6a4a0722dc97b66458138d0a12fafaad6024a7b70280ccceec4825d. 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/BX6IQ2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764e878be1cf77d3e4708e0fd5ea1118378214b28b21ac00183107513812c14d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX6IQ2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046aca9337f44ea62e6cd2641d9ffa33ce74d8ce3a990c08b230b82e02ae7d33. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX6IQ2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff30ab997c4dbd85b571ecdc077afc289c9641c6401ae41411c740958c6ac32. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX6IQ2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152a40f3fc3a15326974677a79fbdacf7eb49e8c32b6f71aaa6ce2d17a147ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX6IQ2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3f7f1a5bff5d32348f38272b0eaa8922869336c3db92c9a3d6946883423ff4. 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/BX6IQ2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e7a74eeaa72a4211b564b435bc4a222cd37d675e91840eb0e06975ac9bb93d. 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/QZS642383752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd824ce3bb43791c3f814c6a2ddc3d9d11bb474c28cf33d259d156f5a0e8e86. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMHN2391467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8393de742c5e4a33db6c91918c7b4011905b9c7ef4140463b8aad5a75dcd47. 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/QM42K2157198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85063892f5bcefb3ace0bd32213a5cf3c482a43c9e1172749c7b59496e76da3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZKDK2173992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1feedce0a8b77fee282ead3b825ad036863401e43c4ac0d939e398190d31dc. 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/QM42K2120650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cc8f5a020235eafc519deafb807a0da5470657d2c13470f3a873ec25f40256. 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/QZTAY2474122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0504d18f963706f7f9de8494843cccfad2164b4d85fd8579116aae9b8a1c9912. 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/BX6IQ2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d551e82a9a6ded5f9ec3219497998e0067f6cd3355a98418d9b7e0a2d0d47. 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/BX6IQ2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a4f00f41bba0348ac8885335f9c4190730d13f474dd3fa381d8a79e41955fd. 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/QM42K1842715.