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 0x09cfcea7129ebae1649dcd3ff4b3bdafdbcdde00f5a43f984dd99e76d393519c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c92b4cc3-4411-4f12-bec1-58ee65b3ed1e.json and https://artists.proofprofile.net/proofs/artist/c92b4cc3-4411-4f12-bec1-58ee65b3ed1e.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 0x0e29677851f242a3bf731b314a49f7bc3ac7730048f36834c9c3febacbfce471. 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/US35U0412402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc693f45d7f9784bd3d0e110150bf01de84790a83579bf6e55f8d58c870c599a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US35U0412406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e200710481a12a64dd3889dbf993a8ec77f0af9fcea1ee8ed377b2b60c23293. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US35U0412403.
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 0xd6e36d709cd3bc6a06ad7e2e880a0a609bb8fb56dc400ff8331889cfcd1b862f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US35U0412404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94949b0714cbe637129db153b51a8d95be8579aa42c6d1b094ebc8a6619f56bf. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US35U0412405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5410445b8fae552572575e009be68803d4522b47c322ef47b90e990c8cf200. 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/US35U0407101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c95d7b282affd42342c3064dc93e8852d2c0c8b7d2e83aadebbee8250924811. 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/US35U0407102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4841a39e84ca45574860a995dce1f71cfef2a0d70251c368c1670827dcbb90b. 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/US35U0407103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9185a0ca8bbe4bb31fb7d20ffaaddbfb3cc92f6a41d13e16b6f296aa6851c32. 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/US35U0407104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd209ea94b2e07d441cadffe7ea028b9b2aa5520b353e44db2ecbe3c4cee198b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US35U0407105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd77d3b3c32ff6079cd4031e2beb39c3dff2b2039b3d0f479765024e0f9c7d7. 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/US35U0407107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8a69153cf6652251d7b307f470db0d3bcf0f88a2747ef8ba1758d95a1c6088. 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/US35U0407110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e7a6f615aebf59cff3ad484a7fd65302b2266f1a6384c0fd735ecc5c8277be. 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/US35U0407112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbf5b680070e191c667890c68f06c2107d951d4f483a4f561daf37755d8029a. 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/US35U0407114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f35f5e7fb5f4ee109ce10687b9e0f4cb07f1a59552dcc4fd56475b338e332f3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US35U0407106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7400a932db6e00ffa68de51c7d080abec374a8cc5d5043391412e9fcffee24. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US35U0407108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c1d40fc34619ad2c1fd46009b16759f41bf9df6ddb320f7f1b92ad1f15afb6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US35U0407109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb1c8849e30fdaa205f59406882c25651977cdac1c0954875abd5d60822533. 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/US35U0407111.
The Kingdom Of Heaven Must Be Taken By Storm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a1b8f77687712216728f8b60f2f67a99db073fc100e2410d70747894e7f00. 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/US35U0407113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6731fc33b6509e8b05e9f6ec609a7fce790eeece3c198072c136df2ffe0c86a7. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/US35U0407115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73138f42aa283f3c2e326013cee559b0bcc3b26a59f34805cc25c2c25e1c51d0. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US35U0407116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83842a590cc9490569b4e45ac5de2dca2fee5656d32f4c38d72e9907605be351. 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/US35U0405701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc9bdc6270dced824014a874a7ea39306628919ac9672de1290acfc1e79fd89. 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/US35U0405702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8357707e94e8dc736e764ee5d9a0fcd52cdc84a3b6e15898e4d2defd84093ca. 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/US35U0405703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ed4a87ddc4610d250eabe64fafead1f53c57e184cfee5c988d1403e38d0d61. 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/US35U0405704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eced0ef84472102e2f1d5ce0f8f5730088ceda48424d14846f661ded39325b9. 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/US35U0405705.
A Kid Who Tells On Another Kid is a Dead Kid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f419a01ac41e4326de9c0415b480f502febe49c50dd300354473bed54d10fa0. 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/US35U0405706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1576d2f24ae54646b2d6a9b1c2290e40580b3a72ba0efb44b4fa94c1b65d062f. 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/US35U0405707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db3be49ae114d7f28aed19840d23d605bba9dfaa99643f7e6a0cb06369af656. 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/US35U0405708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cf91977479e1ca289033102581a50ebb7cc1dc9d12077fd61577159a9abe4e. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/US35U0405709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45849c48242ba733eac974905089969807dfd3b25a4318bdea0b35c51969e19a. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/US35U0405710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52f994430fe60e29c80ef6c5746ce627a2d2e617e6525d371afe397d550deaa. 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/US35U0405711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8301d5636d383b4b8bc895b61d790c8384a630ca0da6135a0006def31eb1bc1. 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/US35U0405712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b0e46364955c74d04f00c31c7f7242edba1b159bba33303f0878294ed0e26. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US35U0405713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae0dc2d2712b6e15450fda038d1f39dd1fa61f9b83c325b4178875e4d6feb42. 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/US35U0405716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7750020cf35ffefe26d9748a953cb0620d83ed628418a599ac4cc8ee4320ef0e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US35U0405714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed85cc11d5114cbde49df3f201e5f498d8f135f0539b7b0dbbe73ef07df1a61. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/US35U0405715.