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 0x0b3a0ea2a7740af2638282193cdd729accd35686acae3b77183e44ed1f35aef7. 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/cabcd642-e450-4349-92bd-879acdb130fb.json and https://artists.proofprofile.net/proofs/artist/cabcd642-e450-4349-92bd-879acdb130fb.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 0x62522829999910a374c55dd9ddd559ac1e671488102b86483c5fc2d421c925a5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZN882326868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3eb7452a91a80ceb1572be53eaae7963178483d8c1973ea7da14f62916c6ed. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/DGA052352168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a71f92236f4970e11f012590d8211a67cf8a9715557a130d0a14580acabd327. 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/DGA062345729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3679e5bde792f79da39fe33e3be3eaa260a6e9dadc581b11fd67dbd543b56e72. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/IDZ771801814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc464af7573e82122f8f8645d522c91d8ec3038ffe84ba6b303ed11d4469dff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDZ771801815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6974fbb93e66566356a54f31755b206248b1a34185a27b8cd925601233a1bc5e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA082391947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d68021f269df7860fd88aa8559fb47f2f274c51ec2601a0a1f93f097b4365. 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/DGA0M2331306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099af30c484c99709a5c8ac811149dbc1c7fd1adcb1d08fa4aba60a7cacb464f. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DGA0L2384692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58cdbb5153e7da05d324568a51f8401bef7bbb65e0e87008762c6ca8587f8f3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA0P2317229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3f035724651939d74cbe013725ba838c19d2018ffaefcd7949a3e106f5c74d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/DGA0P2324689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874c776b4686fcccad91ab14a2e6f5629df5064cfdb416d3af1cd73e30a63067. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DGA0Q2374575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23862dde12e9f966abe06be0bbffa515edd7b34f4ca415f1d0f1aa3e947f219a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0R2337239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0825a4ca81d13fccfc93fd00360761806be746cb7c118088590937a1a5020b5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR10S2400299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e580893f25274b18b2b98a67404cafcbfa17a42bfa481cc8048f8ef9a6ae32. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR10S2424533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50499a34d94e2dd9c77a62fff051100f29b422d3f6f7e39054fcf33ea5fda39e. 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/FR2X42411187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a0df12b966742558db544e203bed9a78e3f90fc0846cff4624945597a692fd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR2X42436375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075503ccd1dfaae79cb21f02e9a1ae64df0e90a8feee0e022ef1006c3f0ba5df. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X42477958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35575e9d29740a203298ef18ed06758d10f584afbdab30f858c082042b2ff388. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR2X42480714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2d813bdb467eebd969ee27bf0ab1458eff9b46edccf087dfda49b48ff8d531. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR2X42496947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753ebf2058988d548cd4b5c69a987ea19642ce96406d56dc771e697e10dfaada. 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/FR59R2416878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab074d4fd1e2ddd222ac36085ca5bbda5149aec0f51f3c68a713cee55dac9a44. 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/FRX202402536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aef3ee2162176079273d4783117f9882a03c147f01ad3a882d2086808a53552. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX202411937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6b042fee947a8e251b0a1f1c761d4d2ed96e6fc14e2e0fc230e36a65b357fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX282402936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd85ef3344073601e5121b6c485edafdc9093a68aa4799c2cf2731312658f7ff. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX452422596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb980a249110676e6278807d4a2382847b06cd2d5e8de7955a1e05e0590a4d41b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX452468262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa907cdd36a007b16f817caa22464f18bfcee81083ebad166a3d89eae266ee. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/SE5752497712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e19fd7dc86805c52214ce6ffd9d31f85ec9de70e4065a57656b08b3cab48be. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX762468027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf845e5f171c734774ee88a2ca0b27a480760df62b6287d19a6b81a96cbf1e883. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX762426897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87914923fe8c042f9f2501410e1232eaf1f0d6e30492693b21c6027ac902f9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX762426891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfe3b3649d346bbb71ee653d9255cfc4847b5f882584e577d2a13b0aa7c97be. 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/FRX872448004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b83a39299deb12cb60caf33edc13437996529b8ddb6f91931a732420de0cec6. 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/IDC012400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9dad7efc1fdecd80cd58f0b1850715bb8f381331ee666b37f6efce1ae0512b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA052488875.