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 0x8d7fdd530ab91ee28283dcc920f713e9476d57f5778c68c7d5e570bd173a9cde. 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/4c61c2c9-21e7-4746-b0bd-93ea52132e2d.json and https://artists.proofprofile.net/proofs/artist/4c61c2c9-21e7-4746-b0bd-93ea52132e2d.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 0xb5694ecec3a4aa18087939efe75073563cb57bc927328d27ad9dd4a10df4a54c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42478678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c575126e9ee88df18c84539140c75c8c1a628e53a10ec735beb118d6b278a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42445364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4459a4dd515df8bacd4a50b30673052d2aba8c022ec821268ba45c7799c1413d. 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/QM6P42478728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5bd7b914f37673f05f10804131e3ff8b82aca8b5b5a5eeed3b2e8f93818b3f. 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/QM6P42478681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce83063dee0cd24f1d6dabe7ea120f581bef4b141cb471ca9798c36f8153a9c. 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/QM6P42478682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e0d5adc6311c61910347cdf4f42ac9db08843861f7912f7b532f793fd5d141. 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/QM6P42478683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfd27534d727573f511f7baf27219de6b9305459a601c970b646a392a86f13a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42478684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d17de49fcd5baa1bbcf7f07b7ab1cdc6d9008a6ca8eef713aaa17f1d2ad639. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42469401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d401ea7d9fbe67ba1ca2262709b7fa7d9155b11dc85c5a1a91e12b1b5b6dbf. 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/QM6P42478686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61670a3008e1998b4b87403e6023e0e8cbea0d80e3165ed2118d3e9d50452f44. 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/QM6P42478687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae233e741111c7cebe768b404e71cd7c2adf991afb609c706dae0a63825cf77. 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/QM6P42478688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5963c1eba6360f6811a782b760d59e10bfa4dc12c02ade98152640f2854488fe. 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/QM6P42478689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6117b85c37564eb28b490b4fdb85d7e4745f4eb53ea2225991fce3abb72bfe75. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6P42478690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e9d3ed016da7caf579b41dff37c7e1ad25fd15c1a72e9e63e51dfd8f4fc2c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42478691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b32aebfd495f1025e113fed0bbc5a22b5ea3cc0e6621dd5b13e4be425b90e72. 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/QM6P42478692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285abe738e0e9c2ad28c2029a9b0e1ce9c41484ed1708de0ee1c9b95ff6b7da7. 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/QM6P42478693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0660ee53935beb74e385aa93f3d535461c2274e571e278846d6e33cddd827e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42478694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b92829dfd4da89af7890e9d08c51345748bd6d35ad35e6fe3dc2975cc0f63b. 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/QMFME2461147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed10562c7219b6fac3fc0138781ad646d0bea65dfbaecb6c7ad43ae4478aad0. 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/QMFME2461148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efb1e26119834aae1fd087413525dfcd672ce6ee4511d7f439183181e2f31c1. 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/QMFME2461149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b201cedd879dc229ca82cb2c3cba2849cdcf8372362095c39bae1d645974cc4. 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/QMFME2461150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2043e338e7095a98921b00fffcbbe9ba06d9a95fbad66bd76781de7c7b0fb7fe. 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/QM6N22484500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe149ca8e10ea272b270a514b1a8ca665e9f3cf51257c3850c92fbbe73a9a8ca8. 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/QM6N22484496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79628ace7956d5975925e6bcdbe60758d828ae902b3a0dc027d615190f6968b1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22484497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79513d837c2ba3f9e9bb2adda9a52356f7e0d0882d494d7f89576455f9df1427. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22484498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55845cb547b13357458fd43525c41f00b3d80d86ce28bbeb610dc868ae4a135. 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/QZMHM2347868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d449505879cfadd81335adb186f980c22ea35022761fe806375cf38c53cb448. 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/DEMM42401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca1f55b882161172c362bc552203db5b3762b04f016f95c05b53ac6b182c39e. 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/GBMJG2324426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8473ab845de0e669704151103b7b55d01a1877497f0b0c96154f6fd90de4b92. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMJG2324427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156a58904da303907d64ca39044397bace40eeb4be5233207c2924885f13098. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMJG2324428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95997e39d0798d291cb783734226b78b9d05f113aa85acc4a6e1215b566e5f39. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBMJG2324429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a20946acdc0cf9f25e7215b4eddcef31f0189c8c917766fd274233e85aa9036. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMJG2324430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b54d657dc4b8f6077f9f98dfa96df8feac2ea4bcd0e090db089e5d33eaf6142. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2324431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d409b81bc255c33a8c49d7bf2c659ee591035562712da03945ca63eee0a4f81. 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/DEH742301191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfc12a2fc807b1280d21f60ff9bd836c8942af5d6e521ff6cf1891c2d45f427. 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/GBMJG2223036.