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 0x91f9085663d2935bd8568525f274c06a7cbee4f2226a5a17e47ac801d9316fac. 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/a2f8d471-1b78-43c9-89d9-074d027421c2.json and https://artists.proofprofile.net/proofs/artist/a2f8d471-1b78-43c9-89d9-074d027421c2.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 0xf9f66cb59c3eafc5c90af764272d18d392dd5b391d94eccd8695ea948a7cc0bd. 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/QZDA81845688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96b870a269c65ad2a174a94b67262689e15668710d03ddc4751ec55ccb7057e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZPEW2402431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313e21aea8d0000539db4e5edd07077a78361cf9dd6291fe5cd049785d44fca8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TLVEM2434667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd205ecbe3a149ba9b8eaa1bc3ceef27f355da67bed47fc9fff9d4c57785e1b9. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QT2VB2439459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0437bc6705d2fe4e699f9a8c5b1d5fda35741e3af0f0517100b333b28fe5b230. 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/QT2VB2443875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e8a130319b859be139342a2e1c99444c490d82ca818baa93c3aaf91c67c671. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QT2VB2446153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0437bc6705d2fe4e699f9a8c5b1d5fda35741e3af0f0517100b333b28fe5b230. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT2VB2443875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557cb06db78231f56fe22a98cd24fa2c07a925a920ee8046a7962e9c19076d75. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QT2VB2446154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3613510680be9b05a6acc544ea3f1984b48b6a52472d201dec350403431099. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZVEM2539816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a94f56292d36d45a293166edcb24caa3860355a7dba21ceca6d9fcf1bedd67. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZVEM2591606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518d3cf04f9e92be776a02e11b218cb7ffc47e6bba1e8eb009358b985604a205. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPEW2583224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a94f56292d36d45a293166edcb24caa3860355a7dba21ceca6d9fcf1bedd67. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZVEM2591606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518d3cf04f9e92be776a02e11b218cb7ffc47e6bba1e8eb009358b985604a205. 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/QZPEW2583224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56359d8dc9ae7ae63ae781e510cb7d7955edead2fbca7a39073e3ca75782b639. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QT4K32562989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a94f56292d36d45a293166edcb24caa3860355a7dba21ceca6d9fcf1bedd67. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:28Z), 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/QZVEM2591606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518d3cf04f9e92be776a02e11b218cb7ffc47e6bba1e8eb009358b985604a205. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:35:27Z), 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/QZPEW2583224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7332c123cd1d96c78e6f992a664650fa6537c02cd0a0c94945dc7043809ed457. 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/QZPEW2537216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257295f04b97e03cda27b4f688a656d81bfbb969966280ac29ae10307c313120. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QT4K52523806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a94f56292d36d45a293166edcb24caa3860355a7dba21ceca6d9fcf1bedd67. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZVEM2591606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518d3cf04f9e92be776a02e11b218cb7ffc47e6bba1e8eb009358b985604a205. 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/QZPEW2583224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7332c123cd1d96c78e6f992a664650fa6537c02cd0a0c94945dc7043809ed457. 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/QZPEW2537216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56359d8dc9ae7ae63ae781e510cb7d7955edead2fbca7a39073e3ca75782b639. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QT4K32562989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95584e6207500bb7ab2b0220bc0de37c344b628ccb2f75d49e19c97157f1ae0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT62U2514058.