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 0x3c5e99ae36d32fcdec43ec1cdc90694dd38de3a4b24e10780c6fe690b91c4a11. 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/1e41f1af-dc6b-4524-b215-220649846d55.json and https://artists.proofprofile.net/proofs/artist/1e41f1af-dc6b-4524-b215-220649846d55.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 0xc776bbc68a2ae5f6e09df6e2bf66ee88f2a3aa9697025ce33f7f91845e13bfa8. 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/BAA052009899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3706489b0b6fa553d66d6cc569cf6e974eaf8a1c877a098dbac0e93f1457d0b2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEKB72433572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9411084d48451a50f7de6eefd8e7c192b2c199aa3a47414cc091a8e760d0da. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DEKB72433518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395c5fbcdce7c9dbaf579f654d41c274b8652cd99b24ce4af947b255f390b72e. 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/DEKB72433592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65072824976ca819ec89f5410284d98d05648dbc9fa098226f6be63609c47ef. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:26:14Z), 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/DEKB72433596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa1a57c4d109ea6eb12bf8e0c75a64cd14e1f4f505a2b405dcd249ce40703ab. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEKB72433384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67e06ceca57320b39a026abb88bf1dbbec1c73264b96227a9d850d92505fcbc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEKB72433400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb568a07256c6d5c415a44dcda960adc19b56edd478567ac3ef92eb36657774fc. 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/DEKB72433538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0412a43f76ebc9cbf4ac081312d443079b1d31e4668972511c07cb5dd9ffcbdd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEKB72433548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c9a8a676f922ffb80dc0b26dd9e33fd8d849cfa923e79adc6ce515ee349fa6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEKB72433641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7e1df7d29035256ee8a913ab97528b13f68a8762371b7c9faa2659e31a2df. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:47:39Z), 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/DEKB72433642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e11aaf20a5f61c5d5452747efdcb9a8dac84f87e4e104afc87560d49876fd5d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEKB72433643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712078581eff7cb52af29443b4186b52a248f48f4c7630a2652e640485ca3f82. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEKB72433644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a4bbf45b44e9cceef178bf0c5b88bd966c3d75cc77db791d7c9f482e788db9. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/DEKB72433646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814ce48adeac3da5d3fa8c266db267b1549968e4eacbe6d3862397fe0d294b3e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEKB72433648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5293af84f7a5ef68f69f90b787d5cfa6a0f7e6c599cb7fa85e8c223b9e65ea87. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEKB72433649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73d4ece814a7e906945c1943b1794e61cebe1fe90904b0355a43619e9a2214a. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/DEKB72433650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c3f2dab36528f56f684cb6c215a8c348d88637e104894848d35b673195f32c. 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/DEKB72433653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60222987efdf99501191a42ea3d0e085561bba6848f39bed3c393068d255135. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:11Z), 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/DEKB72433658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9f7c0941dca348046d559590ce45f510dd2e5614847aa30ee6fb8e5c452b3e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:14Z), 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/DEKB72433626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac38951ef9db35e09293ef7e9423bb133ad4f8ab84c5a3faba25ecf0e8a62600. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEKB72433634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194358b765aa3fe84acce0cba7b0af88e79ea3aeb8abc8a14d78c04dd2a57243. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEKB72436576.