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 0x384ea96af4eff383e04e39fba33f19c381943d4545478db0483cef8dd1cb179a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccb6308a-9fbe-4a84-8d8c-6420a8c2cfe6.json and https://artists.proofprofile.net/proofs/artist/ccb6308a-9fbe-4a84-8d8c-6420a8c2cfe6.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 0x56915c7c8e59ff19bea2e932082b27b4541db905e4a5fbb0228148540155e832. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:35:43Z), 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/DEPI82458151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67613a592379becdc622ab26d774b28e27148fee224d06b0f0beab2a0b4ed881. 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/DEPI82458153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bb662cf390c684156a4006ab5f4d84d20bf370683713a07435f50c000ccfb6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEPI82458154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2ddeea900f928516ce7054f1801deac8e2ffe99f0218e47597a63c6f35dfce. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEPI82458157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1290f15695aad7e952d704432e18c5e2eb20ae524dd5c41c66f6f523d88fcd1f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/DEPI82458159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d6c9087aaa0e7bda51a2c697c25386f3b1db8ade17eab8858f2a97422d4e05. 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/DEPI82458160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143be36e177d36f7e049c2fb1dd31e7b0e3d7fb004c2a294309b1eb73149d14b. 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/DEPI82458166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6289a1af5bf17c8e31b35a17fed4f9ffcd556501f06bfd504b80c70cfcc40eb8. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DEPI82458167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48751c1aab570dcb4c50e42ff6c8da1e77ef8f9e1bd136efe136f14c56fe0cf6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:18:46Z), 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/DEPI82458161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f060d421c8fcc3351b5a64f697079cc1fa9adb193892ae1080b6e8703aac39. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:49Z), 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/DEPI82458163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990e25af63a025d4ee5ca6e210d2c3d424f80cd06838ad5641744c2d37a5c531. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:16Z), 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/DEPI82458155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79191957f390e1f99e66db05757f5fe998a80eedff6737d8ffc773b21a0e7b30. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEPI82458152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03ca158f0afd23768e7076c239ef61425d427533ebad19e474f3ac89acacca1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEPI82458165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f8fd02029784107e63aa5bad693a5ef25cc12aabd93cdb6b3abcf31477c5bd. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEPI82458162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129b9f232a08cabe26df1e03ba886c76a553657f043398dc30b69991c7af9cbe. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DEPI82458168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4938535369fdf6b5964a3785666c4f2c61f32a62d9a94ffba415ab30761022. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:55Z), 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/DEPI82458169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d2f913b5f8e4b7450f9bfd8725a62969f1c40b525fe3e0baf9e54d45f005b6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:33:26Z), 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/DEPI82504368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae688c5c0ad493d40d5b9cb1ba3dad75e071a6367d76f1e7d6e80961d6cdd3b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEPI82504369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7b4f955b13a2780fd2e6ec11c35f57ac1953c1db4e42e81bd26c2863fe281. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEPI82504371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7366585a5b0e160ae18e72b563c41a3a2e614ffb8b8cf4126bd0c3429712b3. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/DEPI82504372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc867614b7cf3a512614c3d340345a89b59aab741dc8dc777a057d6c670368191. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/DEPI82504373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4a19196b1a2680a0baa0731c2eebf6bade81c6b5e72a89ff78f8e8529732da. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/DEPI82504374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268e60e3f20cdd7a60a2969d6a9c6e8bf9a0f68b500838589a2f94f29ec070f2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:59Z), 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/DEPI82504375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f447a6b451b3b35f0b3737d5ae54a565ff21500b74a81728b0fcc348ba66eb. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:52Z), 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/DE1QW2502335.