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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 0x88280d8b7a20e7e3f67233b13d90f2223ff1e937a709bca5f47760e25acee114. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b53a800e-f01e-4488-8465-ab7117bdad05.json and https://artists.proofprofile.net/proofs/artist/b53a800e-f01e-4488-8465-ab7117bdad05.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 0x386b9441240feecb792d8ca28bdcb6c99ffcec4740bc3d27bb19cd7d201914b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AEA0Q2335991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0025621c9d28765f7f0702196e5c122e0f1dc569412eaaf45d2c8a6e7236c00. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AEA0Q2335992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481e9a9b639081f36be3473898e9c5f3b97831884e7616aa1a354a9b316f1e8d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AEA0Q2335995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3a4862fe6d5a27afb964ff5d8eae786c6881d547b9632f9cf3bdafceb0c3b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AEA0Q2335996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518ec662653b81210a4a3e3c4479b129297c15e50740d66e09ad9a2b773f5915. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AEA0Q2335998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf267c670963de9a0578e548e8e1c27cb0a11e3bc9d9fb86e82dbd92fa39a223f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/AEA0Q2335993.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9464294f406f2fbadde0e525deb1ee00ce846d3f38a24b570d0f9abadbe00. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/AEA0Q2335994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bff452f7f174c85ff63aadcc2b2526cee1111cc02431434cf79b86a58f936d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92178669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2292cff85345cde07faa0f5d49bdd86d83daef9e3cb4ccb81b824c297d5c5a1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMZ92178672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cab972dd9506e52ff9205aac8d4b904e10f0b56d009a80304c0eb9fe6e997e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMZ92178668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d88af8c59ff0d289aaf35c6ae76b4826974a94dd7290a8892e4ca5860c9a3e. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZMZ92178670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b881f727111b8911e78c838bcc241570cd426780a9a9e41a767757b770a81a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZMZ92178671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646a6c9683399fb30b86e26907063a730b30b220ca623fbddcc3620093ea03cb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZMZ92178673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a276becd9414df9551417178a62ea3358c681ec340f1d85cfcdc2b3582b6955. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMZ92182516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7974d09f6c3a159928da0f794c11771fd9d6c37a78d419266a958a1ce5e3299. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMZ92182521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd31fb6970047baa061fd7bc6fc0cdd8d5042f0c39d0df1d6125c3c2d8914ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92182522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a2acd26f1e4ca143291eabae3381282b1e3ca4f975ff7ae508f569477e7bf3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG2001323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d89ce0a441d206a6540700a9c4091de58732709084894d244a8bd18f6391dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMZ92177776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200a7f911b4ad089a3fc4cda8f5c4cc5b82d9d6499b92b4e1c8224c5993590c3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMZ92177781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e21998ab8788e15047ab3dfa6123af74aeb0e0df758552732bad2eaf861a6ff. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZMZ92177777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd822cabbce4b5a3b29f1cd4309cf586a90998b0efa18d6ef9bb86c5ade7967dc. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZMZ92177778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbf052469adfa86786701a819072da75e58be8a41d3a77cb20f2f6a5523950f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZMZ92177780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4781ebd142fb1c2fbba60d5ce1fc2bd698a1b0d473b7c0385c005d6881b894c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SMRUS0062403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c98fa89c1463e144be233a90a973b221e1d61d73846a2bf144dc8f89bde243. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SMRUS0062405.
Korsakov Music Presents Future Stars Vol. 3