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 0xb8383dbc7238b1cff6b6e7696d15367b00c90e2f3165505e7c33355085fbe70a. 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/39ace992-c9b6-4947-afde-42e5cb67c5bc.json and https://artists.proofprofile.net/proofs/artist/39ace992-c9b6-4947-afde-42e5cb67c5bc.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 0x6f1b2b09d9409d7e91fdedb23cf578eb9fe18f8c7b1bbe7125126b1f3b72b8d5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM4TW2332968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b7f6263eba1e5ac4bd227d42775abb6848d6509edfd203de0bea1c71a58f11. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2332969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0580031cd287972173aea1d1ad05437eb2e73eab5ec5c3248a08277d5235dc8e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:52Z), 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/QM4TW2332970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d5bfefa706d1ccfd9ad31da2e3e331ee60f3045a1c649a69116d56c9939591. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QM4TW2332971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898a763b5cbe96f8e45db9b4347872138fde927a5bd5dbe847d04f451e0c89ce. 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/QM4TW2332972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8318ebd132a42e4b89c4a6fb701d26e3b79e02c3f21f9d96528819e7da0f5fa6. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:52:19Z), 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/QM4TW2332973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27aed595346ca4d122db4e50b58ecf56f60ec2f17fb7563cfbd88c2ee2ad5ec. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM4TW2332974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea0a2a776b9fbcace41114ffc93d7935e1f8f1b14196d0bd41192a9675f27e8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:41Z), 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/QM4TW2332975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067c06912e2ed5c39a154ba08428362fb5cdcd5b689beff7443ea12abaad59a0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:59Z), 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/QM4TW2332976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1042f5963b90846ca2262841e6c2eb47a828f5e37d9fb71b32b2c5820d25d. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QM4TW2332978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8665c01772dc6734779f6a8ec53f8c3ece74093a83fb0dcd697133e69c94daa6. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:39Z), 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/QM4TW2332979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9559d986b926e1aee0dc6327ab583e3c9c5716a0df8ddb023f820c3b209c26d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM4TW2332980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659096818735b9e87c33315cac38c73172904233f42c9dfbbc4a0e6f14b4c16. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:12Z), 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/QM4TW2332981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4645692d6eb8d37d3473380b96fc2c8ef586b4b2188ca8ff453f378808145e3e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4TW2354031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec98a9c9a8a8b277343ac049b3c575f27c64d4fbc9a2de1ac6b9f859265d11c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW2354032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd96272392abb576f3ed62e139675c6d3d33ce01e5a54d0b3d28fb4fa78d0822. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW2354037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a309e89cd1af7e404c181b85baf9763f3fc3f8bb9c743d4ef58c0fc2f28a02a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:28Z), 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/QM4TW2354043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d6e1cec7c43c17a3ac56bc168e0a22631e8b44339ec7fd2b9193d9403c4836. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:04Z), 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/QM4TX2351640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b43518627e0049fcc96d7425638fc3bb2866fb85d3355f9b8991fcd588e9b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:49Z), 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/QM4TX2351643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba4cd5ef4cde2bce0270d881b4c8c4dbd799b7e17ae229cc4800182d6815274. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2351644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00a47c4403a56e8d60490323698cb83a3b8dd1374ded3f3a72bc3b901d5a181. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2351646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b2dcf13179f0d97241cb99c497bb6a710c1c9bf6a1bb5a4cdd36655dce750f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX2351647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fc7f08ecc749dbfabd7370ad1faded9ab4f6601fbad63eaa2c0ee7c88b1ad5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2351650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10569c9ab84f8858dd976eba34158cfba79ce9fb00d30f322311d2626b87a8b0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:15Z), 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/QM4TX2351653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b754451562a5655fff7ec3dc946370afff140efcb70a753b0b87126cbc0406. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM2347286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fcfe10b5c9d35bf00f30dea949d21420b8360e644676ad0422dda8578d4867. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZVEM2347287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062fc6433b0f770b3cd86ad4daa0933d67a47099109b9f54e8e1f31de8bedfa4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZVEM2347288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45747d8a90dd93b9dde37218a9c2d58d2a97e35dbc5efbd90789003b916d47f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZVEM2347289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8515fb3ec033a067aa5fe01f1f73752d36d0df38539237f48f5bcea64e9384b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM2347293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fe48b976287f589af03d0cedbffbe4fb1bcaa1717c1a3b7bda4baeae9664bc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZVEM2364131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca02b9283463ce3f549d9227d5bea8a62d0dcfe7f92ecf1e3b02e17aa010bf. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:05Z), 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/QZVEM2364132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc998c822863367cd95e12f56240fcd7323582e835903e03945a185c9edcce2f8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:37:31Z), 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/QZVEM2364133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c07ae0f2933bac05e6709416e43477961aa8a324087a20db3426ee6d85944. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:45:25Z), 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/QZVEM2364134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5fc05770f47781c6f72e9a7850c51099243a586f5257d9caa1997c8d9c5465. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM2388214.