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 0xd40ca7a9db46e69021e1fa91649d172f91597823874792ee43c928882aa9f3f4. 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/ba5ac7f0-907c-49c6-a04d-5adc9970d6ba.json and https://artists.proofprofile.net/proofs/artist/ba5ac7f0-907c-49c6-a04d-5adc9970d6ba.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 0xc8e1d625e3e8ea3fc024fbfeccd8a75e1e2e487d002a7760478ed5e45316cad8. 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/GBSMU6562051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6429a418a19b4e20beb234f796c7aa78b9d2d2d1b1286e3658510c9f4900f4. 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/GBSMU6562056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059776a38555bf5115f076b89301349e6bd6b5045885e47a6fde1138e7ac4ee8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:40Z), 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/GBSMU7563613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2872acf45a0705266d61c3a5f462c09a133ee6465a48b77b4e6b63fd3fb6aa0d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:10Z), 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/GBSMU7563614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ee0b4c53fa0b02906b739b18f5848671649558457e396eccee1316ecd5341a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBSMU8159651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb7ce8cf14a4ec4f16dd360769e633fbdb571cd77a17e934b8361e6a5b3fe82. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:07:58Z), 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/GBSMU8159653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1b204c9ea8043a5e0c69c3c8bb3c45a267e8bc353e339b8b79253ceab78372. 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/GBSMU8159654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756625997069e328efef3df445f70e46c82a748f9a5623f65ece4ded6f1d6f40. 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/GBSMU9399926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dd5979b86e71f9918f69682c229cc1d97c14ee187e1c6f8d652d5590e142da. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBSMU9399927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c140041d53624120cf746332076c85b741438c9b4b50fae04522fd7837e274f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBSMU9399928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a280a76fcf21619ca9e762c7dbbe0dab59f67fc003c0b6ed93e76f43800e933. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GX8KD2215916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc3464c2ebb468abcc777038b627da602062bfdd621736932fa884937f2869. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GX8LD2531872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2114eaa624cd592bd4332766a30dd08c6cf8d636ad2921c7f550bc8167e80574. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:42:38Z), 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/GX8LD2526598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170422e18d88d560d28ce559405790e335a6a9e4179c8f459e74c2bbd78e11f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:27Z), 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/GX8LD2500626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e96e7023e686a556eff09fe9f062352ed2daf42be7ca2b98604866aa8cdd570. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:42:57Z), 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/GX8LD2554991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffa7afbad575285c89a41dadfb9268ac72a864bd597e77bff3c6005cb8d7459. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:30:40Z), 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/GX8LD2588597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f41b85d72e5732e5faee5a8b7968410dc7f6467753801a7d33bd5c9f2e80447. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:23:11Z), 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/GX8LD2510969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc049eb6877ba3e582392180ab090d0fa2fdf45c708d969c0a49fef7f306bd2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:24:32Z), 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/GX8LD2553457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528649bffb247657550014a9c7e5fab866d5fb83f384d4871084eff299a8f632. 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/GX8LD2541290.