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 0xcaf8086b1b3e40397e2ad80b9eb9c107a63125a24ac1c59b15d29d8a3e960048. 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/68abcede-e073-4568-b08a-da61ef502fa6.json and https://artists.proofprofile.net/proofs/artist/68abcede-e073-4568-b08a-da61ef502fa6.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 0x68156cdaf735b17d635b053b551a40d6f08241f9e063fd2197555ece1286a4f2. 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/QZFYY2466218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ff3f05eb6d8b34c86cb706eccffcf29fe6dd7911b696ee4007afad3437f07a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZFYY2466219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76e6fcf3b3c191eb7d5c5e0f1b3318219f98120bbb4c19e4b0718050fc3865e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZFYY2466220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0d6a437214253f49bdd84ac702abe26912fc5c2fb4e0a797080409ef539fbd. 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/QZFYY2466221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5006f6935e4aa36301e712bf38978ae99e1af3600e34eb7d9968637765f95de3. 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/QZFYY2466222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde0b905d36731298b86cc1827c9a2b9e5d70e0faa0de22188345bdbdf3ab424. 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/QZFYY2466223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99710686d8471d0349a6752b690758aff57b0115a6c90ddd8d39b99a3c6b8cea. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZFYY2466224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f380c8fa80ea9f8b1eae8197d27d5fa0927e38af78880b057dc96a98d3917d7. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZFYY2466225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf1c63e6378c652e994c82d4c532c3af35521ad42fd92e23c834a3be1ab24a. 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/QZHN52473014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d82b5689cdfdc064afe134d074e55e3ef8eca1855bec9f8e2c029c50c93f54d. 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/QZHN52473015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e4e3726c1558e0fb9d3d0a0b0461b9e9f482cac308487740992824266aae49. 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/QZHN52473016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a10aabda94184c25d51e595bbd2574284561e3d54e23c9f26fd51f808bfb93. 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/QZHN52473017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02b6ed2274f81efdccd5f8e97c2ccc1d84bff5491648f250cf6b5cd07049f7f. 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/QZHN52473018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249488508cadb782d389aae0f9a134c30253bf13450fed5a7549b14b27545619. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZHN52473019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3128e48abd1ab0ad7dcc266dbcf322dc5ac17f161af7169ca9c40a6d3d692357. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZHN52473020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5f5e4dc903e2b08ea8dc6146dd2fbdfeca796508595bafbfa44bf4a82962c1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZHN52473021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0b1c0c5711eef66fa6df8b600caca13c01ef1bdfe38e542ce7e604c5107f35. 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/QZHN52473022.
Funky Drive'z Me Crazy - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4095b8bce0c0daa332e0cadfb04ba278162d5f4b30f6cd5a04891aee49103e3f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZHN52473023.
Funky Drive'z Me Crazy - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc3a5a72e5d283776cf3cd69ff493700d211f48b4b77ba83007e0eb7c33fa3b. 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/QZHN52473024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9419188cc1ab67038dbd1e23119ec7aa19c8abafe1005bbaf62297f673356421. 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/QZHN52473025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eb99b8216d8e5b834b0d03fc3b9bd14d2572b77e321d64c57f120a3c2ce2da. 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/QZHN52473026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd4aedcbee7d4498075ad3540e5990ba7de132c492f754fcbe5e0f2cc8fe68a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZHNA2459881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151188073f782f15873f8042ab9c043337af00dda890e02acefd2a1866d28d4b. 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/QZNWT2467912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a93785991ef981c9c71d45274994150b0b0ee707b56d5653e8b5e878671fda. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/QZNWT2467913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f62a87baf010d56c840205f5f43711af34da0bea56e0d5b3300e17d8002f094. 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/QZK6L2443712.
French Kiss (Lipstick-Dub) - Dub Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bf99477030532e54ec68245694214b5de8fe95e82bb7ba5a5b5261e61e0d27. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6L2443713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9995ff53425cd2c7e60ce6d7446a9d2692527df31ebfec8ab8acc50592b19e83. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZK6L2443714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763e710f289c942ec17115f004c0609e6bdade7cacfebfba53123b189007b5e1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZK6L2443715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7bab4623398646350c1a04bafa52a7a65199e8ccb45076444a9647ed29e771. 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/QZK6L2443716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515734c9d3edc0fb4609af40f8173b44595c9f7c72f3f8237a51a56abc19e5ad. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZK6L2443717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fa639e5d67141a833123f89f9ff5e599f72761cb4ccbe5a2c782e6cb99b64d. 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/QZHN82438978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb97b5ea03c6a9bbd102325b40e0308f03ff85729caf5aa1fa3c2b23ef0a7f2. 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/QZHN82438979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e76ee2c0141a211c6cd0a16df15bd20d109963ab8fb62dc9669843661ea1f9e. 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/QZHN82438980.
Funk Freaks & Mary Jane - Unreleased First Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114f80f8159991c1ac02480f8a73fff0f100781fe360a3c6937632bb4ffbde3c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZHN82438981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8978e148f8d926bbc64a0cec17b8d9c73d86f4810e601edc46bfb3df3f1557. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZTAT2494305.