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 0xf41732efae1b7cdb3f3ffbe77e6d51d5dd7f92028a66b96fd7cab591abcc0ef9. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd62ea82-cab7-424d-9b29-86fb521234eb.json and https://artists.proofprofile.net/proofs/artist/cd62ea82-cab7-424d-9b29-86fb521234eb.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 0x46d3edc8f41cd83f31054b654705d19d32befba4a8deb9612b8450be2cda4221. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES82569506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7680f989b371dc131f45e20fb9817bd7cc465a07d0c2ca0f8b1a890acc9bd6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:17Z), 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/QZES82571435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c4641f2ee587bf11bb5a4e04ec08e2af4f3333dc346dd6e717b27926d04a36. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:21:38Z), 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/QZES82570333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2628edcb60ab2323ff40ed6239cc07ebbdcb8acd84d47d51ac6fae63a4d4bf89. 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/QZES82573863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dd96fbea993176ad08ca428e115ce1de4846c3a130a1a0eeea8acb734b6c3e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:09:16Z), 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/QZES82572456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83cd63fd0ae04ddb5b5bb99a3714f84c1dfbf06dd31032b688935dd679c1fd8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:54:04Z), 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/QZES82572454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0ae7d3418f995e1ed332c4a8db939b122c667cf84c91627b73cd9aa5c0acdd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES92516105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc543b194ddd50a162798b68f1e4ac6835ab40a321238fe8e5b9f8b68f5fbbf. 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/QZES92571599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02853447611b91c7cdbe89072dc8b1ab7d1996b93c4f584a48ccf9313f8c3268. 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/QZES92568925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab4fbe82a54f8f3e2ab455d7adfff70ac5243f4bba1ac9a120f6b56be19cb8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES92568485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b10fb026e4172b8d867d6213c7f45509113f3a9dc445f4a10365c2d26ca870a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN92584285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfee923ef379b7be4d3bbfe60344d126768f0dbd9f1130771413a8284c574410. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:00:27Z), 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/QZHN92582131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8530c358aa6958036e29fec97a82998f85e460208ff7d8fdc83f28fb9b6d1f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:50:06Z), 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/QZHN92585651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca9621aae5b67da97b32701dfa7ed473ae3b2e441524023c905b0a682f10372. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN92584290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53e03866d88de53522b989f11811f952513193805dbb0c21106f1221035a405. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6P2511390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0b2f0da7190335046335b5e35743d2a78175741e17b4fd353739424db09571. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6P2501871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d82f78907299c1ce1a646ec05b325567997709b9d964f24fcd21cd8cfad1ce. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:16Z), 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/QZK6P2503654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e291cfa2b13a3cd1f9a684eb118e372797e0fc3fb79e9b1950e29072a3d6b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:08:32Z), 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/QZK6F2575667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb496194cb6237bd50b1d527dfb939522f531fe5fd29d1af6ae5bae32e205a416. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZK6F2571708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9228e74b4f7a7742e19a29a11dedfe17816da66b42823ad0d696fa1a60bc67. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZK6F2575697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85da31d1ecf37a78e5bce40ef8122f228a02271d58b096a99d2f62c61c46eaab. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNWQ2572866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa898a51923dd31eb9ecf9ae6bfe31b3e010c46814f72c2cf595d7f8c2d4ded3e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWQ2571234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9830d97281f520693dace675815e8950a46816c5ff51f07579564c2f4c3f35. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNWQ2572834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365ef3e75502f1cc4cb8f17f06ee89ba5d9025983b8ba4698205f3aa9ddc17b5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNWR2517571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27fb95ccaa936aaa89950664216628256b099edf23eaaa246790411b04bb991. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:19Z), 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/QZRP42503797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c635d93c3178d7212294e715331d06759bb9fa4c07b2f54e7942abca87e45af. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZRP42503811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23caabd6d89f09f7a85bc6dbc0b67c6ac5faa57bdf9b7d5d8cb1ad6b60b26c31. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZRP42503745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7236cc42fbdb9e1eb99138e812f65aab867bbe7d045d18820cf67ae9d77598a7. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZRP42503803.