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 0x3256af25193c24197e9153d33de0f27c97c827350515805a7a7ed8246db7a105. 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/456d49e6-bdb2-4e07-99aa-c57cb1674ff6.json and https://artists.proofprofile.net/proofs/artist/456d49e6-bdb2-4e07-99aa-c57cb1674ff6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Secret 4 Notes to Speak with the Dead
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 0xf2753060b7f881bd6ac7652606ff77abab622df3810cdb7d4b6ee43f4c2f6991. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USL4Q2186302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f19b4ebd5b57ca4d2615cce2373ce83a3c9e4b90798338e8366f2b9cbbfc32f. 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/USL4R2164044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd137f794ecc14f3ca864e4e07f4412f5deebb2fca108cac45dd46dda290ca875. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USDY42238851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf97303a919ef38610d8a88332a40710299f2dd42b70446cee5b9dcc258db455. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDY42282554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef63e7fbfe0e7b5c21c36202edcf8753c7e83fb9283a9829681b4fe71d3bbce. 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/QZK6G2221426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06814db61c0476ae425c3f31eea7238f0c9811232fe7505525e999f4b75bd2bd. 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/QZTAS2298164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2708c78e50b5d853292748f62172a7fbced02faabc04eab03da4ec32dd3327. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:14:00Z), 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/QZDA42330927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed7105a5bbb6effe5ae8525a61c667cbdabcba7be7b6e0180bc43498f3f4f3. 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/QZHNB2362377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5c2b9c0da092fcd11a47e6704a0980c550e7089ea09a6da606af22c8ea1dc. 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/QZK6H2398100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cc7ecb173cef15db23e43e280419f8a10c0801d72cf28e36042011aa6d4842. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:29Z), 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/QZNWV2395554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28baaaf8ccc4b7f122d4e4341ecd00c7373540c7b71033fe53e42ade7e54e5a. 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/QZPLS2331574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8286976ece345091e220293508c8d91bd9debef308ff721d9670d115e34f48f9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAY2378123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7fba810ec9c4532504d3414d85c2a588377d9bf794ada64c609a06c802e1d4. 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/QZWFN2349742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3437e8483f7fc422d79403bf5fa0f8d806cb59438184f025e5eab31f223e02d9. 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/QZWFP2373063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc38ad05271dac70b0a28149f5c6fd01cc89d842bf323b08319ef0cb257be4c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDA82401936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb2c7fa38c6e784efc0a4395cb54c8d9194023981bdffea59c27ad5aa0d586. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN72499633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d6ec28c10a15655f7133f3fcb80c5d63fcf32b808ec6bce0ea1ee5ff66ad9b. 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/QZK6M2424524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caceec5348726b4e92a75bc133c50963152a940abc6cc71c717bf4782fd9446. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZRP42445921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49744e15e48389405443472bb7d4508781fa7e71855d66ff46c20a8be3892f81. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:03:54Z), 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/QZTAW2491200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d81a1a267a995d6049de1ec72ae9f9fbbe49707d9548f014d1944692dfca3. 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/QZWFE2447271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5732ad51d43718faf9cd82e66d625fd6739d3d2b9329d30e3ac3d411e9ae6949. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFJ2473836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3824116dc59d4a9d82d3245520723ec6ded1aabc9e09fffef1cf4c07cf6c0b8d. 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/QZWFP2451158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3720b1344d8e97b34a0dd0ab1b10b54d566b472445ada537e6e0eb8567a12550. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFU2424440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9137e0b37363044a8135dfa28b301c2dda27888fa94d2058d41ec1db954743a1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ762493918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b3b74365575e6a750559692b79770b3a910839402fd168a4b3083d6eae91e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3EX2451002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b854b6161be8cb9edff8d8ecf93244c6a9bf34edded0f47ea46229d2463c8d0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYX2587919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e515aefed5d4f7ebb74dda581416705c0e122fc5400405f520cde7ed06fc1b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES72575752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131cf9df32139e4a642d14a62622bc41f6c434127ee6ede586a0d9362cf78be0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZHN62584377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb85aae619d66dbaedb0d73ce4384a5b7cda224e3dcbd0b8ad6a7ac2dbb174e. 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/QZK6G2585966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa435f7e1671ab44461b171a8967624c99910ea466f37a83f2fd2d72d61f1be. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWY2556635.