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 0x2e858bf97c8505f1e5b81ddd4357245710a2f431cbe52929694b252ae283c2b9. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/233770dc-22b3-4993-96f0-6580bf67231e.json and https://artists.proofprofile.net/proofs/artist/233770dc-22b3-4993-96f0-6580bf67231e.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 0x7482666abaf39020d59f37a94f9b4938e241cddfe66c5a9d9522622aa95ed7ab. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZ7362300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ef6092f36b34a0ae9195c8c2812b6d0ccea1358af82038880ecb928498aadf. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZNJY2110835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f73fe173a3bdbae5ff39dab01757fbbc273187375be01553f130b0c37769b9a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBRKQ2155338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7166f214febaa18c6143c345e7bc274c4fd071abcc9e0314284d2264b85f8d. 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/USA2P1218455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f4dc84165dd59081d7613f334059168dd4cb574da0da192f21646a8c900bb0. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZPLS2122331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0731f3313055a15d5b8e98b81e3709947c4658d7bb53428be9ec192a2275cf. 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/QZDA71881408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1084c4bfef8736b07ba76197927f8dfc74673d6a6edba9a9ff357a6953699bb. 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/USUYG1361928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba12292c5ebd8e737212597ab250ea198315d4fedcc1cdba24074b2dd42a4e62. 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/USUYG1364095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457c01478d3bb8dc67239bcb828b2baadd5b62a64ba52d4d5a856377ffb02c30. 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/USUYG1364096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5acf7ac1c057cec6047c5fbda193a118cb0071ebe0a27cda4dc348bb38fd516. 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/USUYG1364097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbee4b04a2a17aa502e18bdb3f53e6cee0760c11628cd1b7e1dac6ca00a38a7. 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/USUYG1364098.
Trap Baby (feat. Yung Gabe & LoyaltyBGM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb65e00c716e8ff6bb31eb1b375d803adcad04c865b5a8b337b7661caae2c6a. 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/USUYG1364099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82089533a1aed65fd7922f5f230b40bb101c4880efdd39da34d9b2c6b45963d5. 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/USUYG1364100.
Cuatros (feat. Paul Wall & Krystall Poppin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b56a2f0d498458a8d71ee1c6d9e23ad307c780bb2cecc37202dfa51586bf28. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USUYG1364102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38715c07235ecfc603c86c2a2f21c3037d0eac43ff389b83937b22ea29c2204e. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USUYG1364103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f1c614bbf1ed4ad76c714f23a2cc1331b9407aa67ef8a101626c8b925f8da2. 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/USUYG1364104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fe6cdad47a295c25c60de1301fa689fad13e012362e26934f07c825843e660. 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/USUYG1364105.
Lost in My Jewelry (feat. CB & Mari Taylor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9caab10890d6023c96db19b63e4b516929d0f8360edc055a223fef428e2c871. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUYG1364106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffee3c6f026d4b40e44253645a31b19f7eb536192fa957354790506b5d2238cd. 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/USUYG1364107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ac6fcc865b5ee95ee57781dfef8374bbbb0f019f160ae6a7f108d25e69dd87. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USUYG1364108.
Peligrosa: 10 Year Anniversary Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e458be5681e8baa56b3cc61addcda6ad914b3688a2af259ff2cb5397871e5c8. 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/QM65B1700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e660cad23aca401e3db1adc31a0448930be7b1c7b921ba9e5409f28edf0ba59. 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/QM65B1700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2144df78659502b650286fa8c799a6dd3caeaf5b3acc764c54c41035879664. 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/USUYG1386130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf852a983cce056da666a77e96788be9c279e6a59eec821c2eedd4afe85d75b46. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USUYG1386131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3e16dcc9a47c775440246dae4968f01867a5b0bc9e8c5262d54c92f3b85f05. 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/USHM22471868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29fb2a5b6ec4f788587c4544db017080f0f231b2fdeded7b5882d84283f62ce. 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/USHM22364632.