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 0x1cff12edbf9f6131d4f40ec7b491e788f558ad65809404640c775260184b3d1b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/752d95da-85fd-4e39-ad27-55a4b54d4286.json and https://artists.proofprofile.net/proofs/artist/752d95da-85fd-4e39-ad27-55a4b54d4286.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 0xd368cb58944a9347beb34e64b19335cf86f35b6f506f3429af13277f7e9fade6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72200470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe523ddde5b5eaf492e8198b74a145d24f8aea29082f7d269789ccff7c79662f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM72300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0603797180bc1a00f3f561278387ece4f02b2040f7cd5d89c11241b1f3fc594. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f80db747c2aa42b6f97de89fd3b8dd4069ff47e18deeb82e99b43b9c1a02c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG2000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca2d235688389cc8ecfca0b0cd7b4eb6d71aaac2cdae44a45ea8ca29e40ad5d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cf3567363694bc4d91e188d9e0d993c3d1f391b9de22c89ffb7b663f017692. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKADG2000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba34794efd5fa6668560887ab37d39fa9771e541db7a7bece8052f8a44752b5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKADG2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2d177a0b73ce7a57632b3772c2a648972f3611b111f322e5793e37a31cb7c0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dce29d2175b91d9c83467d0226fdbc02f7e070e84a5893f9cbf5bc148327ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab987658b2e91841eb7acb40e87f1d7cc008d0db78d5f6295207791ec9e3c6a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b16b5b51170e42158ae1c6d170e08ce0f360ec4b16f83e64172c0fe1924ad22. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308033d3a7e163c2634bc8a67a16cd107b6b3e66d672e62a980646f85e56f4da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG1900756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53ea7f25c3b3016c520bb0b581eaecf42950e39bc78e8ee1120022c6b362389. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f741156404c4927f07334921851f7a572d3a62974ee2f9c80123d19f84f1eae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKADG2000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b15bbaf85a7f8e6174953b3f0fd864055e7e4454152817d52e1475451918d0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24892801e0be671190b04ebb65d3b7cec7ebdb976a46db6cb4ec2df2aa914f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6ca7431432df788b3d768d9d47fed1dc92100dac7831af99193c4aeb37215. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72300642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e968f10abb2fc0a6e5d17692e29e436de468849cba6fa04bccc41512a4a8815. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62143032e9dbda7877bf168ad88abf347d2ed9b719c7404e9c69fc87ab86c51c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72300644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf66b7726c1a5a1001e31ffb607a6599803f2f0a5878a05a1c9e163ba33ad79e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DK4YA1911906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb88fcf8a74503f2d391ade2a3325a42c2f3ca409d0836c5bb933778bd79028. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fe429d6bdb6d21a00a677afa1fd532499098f36e4f09812672e4918d5d2869. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72300641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1d5c080393b80639dd53412f26398c51ad273e1b7b14dcc3f4355ba23658f6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM72300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c375ae1bc3d97988b42e4ea8c575657c19100aa3018d491d6c77fb1249c8c25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3ee5ee7372d067530a9d3fa08dbc8774a08ec71f716e5f8f078806dca2627. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DK4YA1503501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcb49749d72db7c902b26fee6c7168cb7e3a4cacdb8fb2a5d91098534b44d05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DK4YA1911904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd17778f9ebdecbf35053c159bb45218299bed7019373f887bbdcab7fb2c56b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKGL51600802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abb1b14672321b0c7a27f1e8e0397816d902eaba7a02f33284a254647313a0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM72300741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24365b398313fed207ec212e5941a0f8b193641a5f574bc21cdc7a2763eb880d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM72300643.