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 0x546dd3ca70f5112cc0a575f5b3518aca492c8ec2378ce6e48111ffefc59592a3. 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/8c4624fd-0cb7-46b1-8d96-3790aeacf6cf.json and https://artists.proofprofile.net/proofs/artist/8c4624fd-0cb7-46b1-8d96-3790aeacf6cf.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 0x7f50b25d4eee3cb5d50b0a573095258e3c4ecb9e483b2a09ecc5e7eb85cf9177. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE6A92034512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff1a3d750adff4163821c72416057d46de87efa1b510c43db3b886d2b44f805. 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/QZK6J2056917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16ae853a4d1dbb97a6d63793c9fb62d282076069adbf07d3918c4c1fc4db225. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHNC2059013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bae68fbc671ccc8d7471e21922951a44b703a844fb840899a73376aac1a4aa5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:55:09Z), 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/QZNWZ2058011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc421023be5b9aac7dc1051170a5fb6f67dba66bb36cd19a5ceaa6c09c48f0454. 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/QZNWZ2058012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17420d22b971d1a8ab0cbfd8b3aa630512282c90beb8ce235e7b7e6335cc120. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:37Z), 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/QZNWZ2058013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edf59bbe1da419b68c2133e2bacff6b7ee61644001aa23f5da00ddf9fad5627. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWZ2058015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aa6bd93c2ef42f1362fd6071eb2e5bdc5232420ae82b5573d83b27bf532ce3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWZ2058017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e1485ba9c899b009136ebac33debca50c93f5b2c50f025699266289de41476. 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/QZNWZ2058018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c010ce5f92bbc4ef608bbbadd0572bf9242a5d74cea5388e098db855173015. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZNWZ2058019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1338dada624583c5cb2fd6ffa835ae265a7a401141f1553694c7701bf8c69444. 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/QZNWT2134124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7681b9f2d6b979a271b4361354020d3e394b75d33e852c75651181fc8e75a9d9. 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/QZNWT2134125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421cbcc620fc5638ab7f34107882b483ef94acc4873e7e83f2c60c324f10530d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:09Z), 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/QZDA52220808.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f2e877ec097a4c59b5bf5bf7ed064cd54dac9e6445c19f1a8077b66ebf294f. 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/QZK6K2209918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188dfb578131635c1c90a14610e756dff9db28ecb4cffaf08b84aa1070c15dea. 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/QZHN42302397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffa34da8c163e288adb4413c029a5108bd03bf0f1362c4db7b3019a3b3294d3. 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/QZHNC2328967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15759e71caf339f7e4b9ea17933472ed45a4fad7821633805ae8f43246a0c501. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:36:22Z), 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/QZWFK2324841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc603c055bdaf0febf245af214fcd0db8b90832c49a57616932245066ee513a5d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZES62419765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f7aae15283f13a39c11e0073d7e8d992b3667b2cda83ce4cd4409e3ff8a56. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMEP2430541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e28aa4eb96399d59773d764ef1d735fe4657d57eb93e1974ab37dad9c0a35f3. 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/QZK6G2551806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9cac51146b31a347ed105591e349f019e776787f2faaae676cb8d86986a8b1. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6G2551807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e1b80481a501cf2f987a29b95eb93d814640b54a53b43ab3d7fe534792b1a6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZK6G2551808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ab44da3c45e0aa50276c2e1522b69eef14fcaff8dcc9f9bbe1674b2d943851. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6G2551809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ba8b0b51b4c08748f61ff946f729b5ff100633d7513f900494dfcf990e49eb. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZK6G2551810.