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 0x58118f97a5b0ae16353702bbbca9c58fa04750634af9b330d20a4b2b5c641d63. 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/06a17a35-e9c6-4324-ab29-14711f9e03ea.json and https://artists.proofprofile.net/proofs/artist/06a17a35-e9c6-4324-ab29-14711f9e03ea.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 0x11242e88b8f160d00a8284df6d00489e75b4e7bf783c45da00587d4de9e92990. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY41802833.
Forest with Distant Thunder and Windchimes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33f0c6ac151538caebf3172064c8a823f2bc51414ce928acf5ec3fa9a59fe0a. 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/USDY41802834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca03624bbcff4ae9558b08c054cc3b827205f161ddb6a4d31fa6a640f44e836f. 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/USDY41802840.
Tropical Waves and Breeze Through Palm Trees
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8956640d96af10eb1ef9f9bd58d5faa6434afea78789ca18ed866b834463b4f6. 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/USDY41802841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e61a9fed66c4ceceba5f5ac2038c1790ce0b585e171791d79230185d7bf8f81. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDY41802843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41f66f075a2350d24a24d47f5684f15c4ef93b9413777f40853e96c260fd1fe. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:53:39Z), 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/USDY41802849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf63d9fa3d974d4c2955aa176d1ea4097a50b236af4fc1c7ce05d5c6bea02a2c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USDY41802852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00929c8f8228eaa69e6e6ba92e6fe83b5ca1d7b4e2ef9b9ba3c5713aed5680ac. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM91988901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba06e9db9a2864e1d8aab8a79c31282a67665e1682ed061e216a5548a7d90911. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM91988902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830b87855c78496ee113d7ca338c110868742f0398c84924282abfac430d6fbb. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:32:31Z), 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/USHM91988903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bdb2ed9d03c3ee4c93311e72ea2dd2378eecb71fc02cbe543ff57b8a95b636. 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/USHM91988906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8b89c1e06774175432e14b585363bf4d7d7a6af1b8872408f242581076698a. 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/USHM91988907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f31bef896b9a35d50896dfc541fa497d3fdbe52c92b47aa0b2abd59d456a3c. 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/USHM91988913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c4296e094e5e3bcc5e21e55a12030044fbf3d0fdffdd27650a700ad2f09ff0. 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/USHM91988914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d33f26f81e12d9344d1f2eeade9127efeb019f5c87eca570a28b00e0aa5544. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM91988920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ac721ec52f5a080f5a6d0f8b6346e978ba7eaab18a4c7d9d83ee489ddec360. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:29:08Z), 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/USDY42171423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eeba67c40d050a169697f3e27b1c07ff225ea162f62ec1ac1f3f40cab87733. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:28Z), 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/USDY42171430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9685dabb1812080aeac73ab5858b705880125b72fb61518e59a4592131448505. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDY42171438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32df33f642e90eae62b4fef3461189cce96492be503600b01718039774556b91. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USY282308323.