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 0x7652879dc577232b480b48522700fb26abbfdf51c8836b3d9b98054f395354f2. 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/ed5bab52-e1be-4f86-a167-5fd6a7ba527c.json and https://artists.proofprofile.net/proofs/artist/ed5bab52-e1be-4f86-a167-5fd6a7ba527c.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 0xf08913b6d5cb4fac37b556ad811c4ba7e3aaeada57cbba9c1eb85ecfbf9d4344. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES71G2144412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeebdaf69241c71ea11a2ee0b855e701a90b8e23a2161eeedaf7d2ce0f04f27d. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:52:24Z), 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/ES71G2144415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59f8f86f18011300afc6aa03eb586d19eac85a183698e709478268831980e3. 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/ES71G2144416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306e42ce594393d81e6a652377fc8c8a96e3ebc3116a86ca41d5ed3b48fdbd17. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:43:36Z), 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/ES71G2220831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e94c202384f45f468b8c9780ffcaf55421cabe49db5c318577aa537d1ff397. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:42:37Z), 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/ES71G2220833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d6a641a1917afdd110886050a11bc44864223b3902ba9ac6e1e578e9bea365. 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/ES71G2220834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8ba9cde2c6a5fd8add81ff94194506e28601fda198b852bcff9016b8c7f150. 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/ES71G2220835.
Bedtime Lullabies: Polly Wolly Doodle All the Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd024abe776a0febd3eabb2ffe4279040281c9eed3801e85aece8901ab03e87aa. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G2232282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4548ff962cedd05f7d4548507be8d336debf72377c157ff20c9347c12927c967. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2232284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fe7c5dcc51e783c5791fb73de76fd1d23e29215d90a32efcb32ab820f7997a. 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/ES71G2233903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9002e4b7cd267184401ac9070ccd456a29c7a4619dfe89de4178fee230a6aae3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES71G2232285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3587578371179ce56b7c020fea892660516f05b8d03517398fbd1355ce46ca. 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/ES71G2232283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd024abe776a0febd3eabb2ffe4279040281c9eed3801e85aece8901ab03e87aa. 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/ES71G2232282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc59e36ffb252d9d0f8771ff1d57c3d2866ac8c9d807b7a2f4123283d8c0ece2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/ES71G2233909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e88ceba7ad875fcb53f42d0011392a772e15d84824dce43041a46a99eddf89. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:08:40Z), 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/ES71G2416705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec743ab2a74e0422b834776e8b2ac0fc33d5881c25c9546d6bc921359b939171. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:26:43Z), 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/ES71G2416706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce87d27ba2aff8c67d6eb57b3c1753958c0dfcedc1f5e1f92473892145ae24e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES71G2416708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b531811b9a224890ae6154df7ec9383eb3c7e93c8e011f23c9e4f6afc2be40. 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/ES71G2416709.
Wot Cher! Knocked 'em in the Old Kent Road
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7bef2c557429a0cc4ba03618c802e11d77e059a8781181b2c1d6c37e38a646. 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/ES71G2416710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0312330b2a594321aef6b479c28988514bc67596b5ab397c84ccf89d55a0ea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES71G2416711.