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 0xb61a432df2fbd7e8539674b4ae82b19f3b3b2afb2c6931c15a43e3300cbd8cf3. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e841ff1a-2195-4a66-abb5-08f924633890.json and https://artists.proofprofile.net/proofs/artist/e841ff1a-2195-4a66-abb5-08f924633890.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 0xda71d671ab57c919fb9c98b56a595c0f7a42deed8a704396ef6affaca3f47445. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GB8KE2405586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa782fd21fe06a802178fdd9f026034f67f66d51c8bc4485993ce58d3a8be4e2e. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GB8KE2405576.
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 0x96efcab536b1e76c340fbf4c238a403bc5f4bb93e05c360ebedfa693b9eb95e0. 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/QZMHK2477379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb69842600aa8037e940c78df054600b79ee7880c62decfbb5ec92e3bdcf1ac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMHL2423366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f07876832f61582c1bed9dc38244cbd9c1e663f79784065da7c5724f2053de. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM42K2461278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8d81f2a6b4b316624b64c120966b79a01e28fe0ab678d05dafea85ff53eb04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHK2462492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8540fa7061170111594aee5af35a347d21e724106ed7498523e679956201cb81. 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/QZMHM2454616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a70864ed4dc0f48e211ced2dc1d1c62418ecc6c0d07052f75b28f3bad8906e. 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/QZS642403218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa178a2fe3c28de09d854e93452887b959ac0374de979a1d6b2eab453f9bbe1e3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZMHK2499844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80f25b8d19c69443538eec406fc9b2f6264f2d859d2ce1e70cbd479f4da4936. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZS662448703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac51bbab0d77bae9c3020dc53227a0e3c253a4d2ced7456514628d5dbbc5c77. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/QZS642412157.
A DARK TOILET IS THE ONLY DARK THING YOU'VE EVER SEEN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df294a2d3459344aa27febb40e3eab0751ed5fa0a3e848730ee37efba14baa. 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/QZS672431317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdca3858af5cda006d290c682a7ba5b1a593d3fb6a12608eedb5aa397833185. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFP52361275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76d5eaecee266debdbef69620d8727df75e0a7ee3a9194f34b93cc5f1487177. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2396954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e6a26e44e126d2b13ddf4c2f1472127f1114270cd3e300e01f5da5f471755f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS652473580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7489f50bb9aedfbe36f0014040424c7c5f7985a07aaec03b902caf106d28f24. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS662436059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1efd95c8a791edcf2439babefb17c299ee9fba85c3ed5c0291df65f317989a. 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/QZMHL2442638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c9c937783171b752947c28a8a9b33adc8e672826eca8fe622ae109e760352b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHK2443941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5229ffdb9231aa0beac1d20378b7d623d71bf5f7e82aa29ce3632670a50c4e6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHL2492100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8e4be87979e347abe7791ea693e269eab41e148d07d72c5757f720c824bf72. 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/QZMHL2428542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b2d54132d0d593337220fd57e194114f6fdedd1d41306f2430fd322c8f2e2d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHK2463042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109037620958a0a06f14bb95c2b099d88d9e84241271877921c13aa04448f0a3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CLKT22204215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3817937410ca452deb5e1c4b2b5b803d6c20407c4c5ab74812e9f44cb97f6f. 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/QZS662466877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5ab6b34d0aec88e06924738c5a88d8f5351add6353f8344e43e13b9d566cb9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2469465.