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 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 0x30de2ed12f14958f7595c2ca22b5d17405ae959b4d78dcb1214e6aa08aa73f85. 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/8e9e559f-0199-42a3-acaf-8c7dcb89a64e.json and https://artists.proofprofile.net/proofs/artist/8e9e559f-0199-42a3-acaf-8c7dcb89a64e.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 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 0x462e919a5b6968e297f284468218566155b6d5cf1b1782176f859c3f9864a8e9. 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/DGA052040052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb80f360e517dc059a87261b6f0c28bf14d704a875b61710c060c8606ba04c0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FRX452197362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471ec800afcab58630b3c0151932e709e0c31962c1bca44366f5e08b6625e10. 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/DEZC62131135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093f2766fff93f0c3c8f44d05c325e95fe10503682ea89215111bab981872cac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEKF22101215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca6891a9afd36a436e89f1c8f7748c4c7822980df7eaf74350f89215322936. 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/DEKF22200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe744cd38454c92fe6811c1af352ee4b4bad2b9c630fd5ab6baac9dd40d35e72a. 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/DEKF22200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5906225e43771064142a9cc5da05095746192e1809b9995d2d0e4a3f671563cb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEKF22200498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dff8417997310bc09aa9061f5d4b8e3199edb366af15545f3c4a662329a4ad. 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/DEKF22200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093f2766fff93f0c3c8f44d05c325e95fe10503682ea89215111bab981872cac. 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/DEKF22101215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38449cb84c3a94001234b24b36e078d762bf132ad6e647433105a78f0c5c2b54. 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/DEZC62127237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a4ebbf20d9be06b3d05dbc54ddde5cdd69c8c71da66b9fe7b55797903de117. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEKF22200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0376a80b7d745c7ae1a595ce2d40f20320933098d0260d0ec374d9418f2ba1. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEKF22200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e64cdb854b980dbe4adaf5d0bc705512cff0ee3757a85c98cb762a0cf3b33ca. 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/DEKF22200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe744cd38454c92fe6811c1af352ee4b4bad2b9c630fd5ab6baac9dd40d35e72a. 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/DEKF22200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69da950eb4be57fdcfa4cf35dedc3e687d9d1e979905de6b021dbcea3dac326b. 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/DEKF22200505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe427a56426740aca171bc02b4fef039e18f1a96bf7893afd2d52fb25c62fcfb3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEKF22200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8780ecd117188b2a5b51fdfa7734176182b0bb802498e074e025b40e7b1f4323. 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/DEKF22200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be94758d59f7857daa394c1a22a1ddce3ad6f086d716ce7795eb1fb0e31148d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEKF22200508.
Radio X (feat. Kana & Mavie, jaynbeats & Andrewextendo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80632b28460344fa4e26323be302bad8dd59d0b63d45f5438386acd23d43db60. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEKF22200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab724e2867af54b002a4d87a5612418b36f6707bb15ca3e2a74df26f9fee686a. 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/CH7812360843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c647124e32d745dc0e2761c43bcea187828417fd64f67d2c73b06fa4c0783b. 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/DGA0M2374757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad4f8f19151583a23d7a538cde16763db7c00c45e7cc11cd565c22cec461ec1. 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/ZA56E2416299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0acfa425b10f171125bfdded2153f6d64635ba7118cef1b1b79c7260fb6b566. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DE1CZ2200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82907904c6d922aacf6f638eb699b90b213b9459fa02a6ef84c914e02af51f6. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DE1CZ2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc527c9f00591da84d6b6fb0f3215ef34defe0739ef249fecb5acd345bbb512bd. 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/DEZC62363065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae81acdab44e5a0dfe1efab3667bb4dcfbcd4d5ddc54eb639c9c5f4cd10ddf12. 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/DECE72100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef29cf38793839ffdba036dbe4a33d6913f586b9e5069e34ac9b1213674947e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DECE72006813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64737a71df7a7c090501868f58749e73988a5db1dde9e82361f80e8f5a69507e. 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/DEZC62256476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6118d597994e69c0d1b2091909eeaa7972554bd0edf8ed6a3bfccd788e38c6a. 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/FR59R2115808.