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 0x5d31a8b5523db9493b477f7106c60a2a29b8a16e72ba00424f640ce5abb29eac. 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/c46e0ebf-bcb9-4834-af3e-6b49c335a444.json and https://artists.proofprofile.net/proofs/artist/c46e0ebf-bcb9-4834-af3e-6b49c335a444.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 0x1b9fb5b2d5b97593536783109fd588c0b1df64d2935ed646bdeaab8f8829e82b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P41514236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3fdb844a7483febd97015d813837584d812b3d9a9096247d54dd02dbf4702a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM6P41514240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2368f0dc978eab6ba2092fd52abc02f0b69f532cde1a292b3f1c7a7c0e49b76e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMBZ91409841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a15b81b7c509aa14553fd6f799dbc66d187c085f3292b82c8a3ad23840458c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QM4TX1764699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ecd90c2027c6253dfeb31f97825bafab22c37167ecaa221153c9e5dfb7915c. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:36:00Z), 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/QM4TX1764700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd8d25495c8007e91a0c10bffa6c248828f0de2d17327cc1496ddbbf338332c. 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/QM4TX1764702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29b12c6745b5a141264fefe17702f6d0ca4ec5f603aee92f874228134b277bf. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QM4TX1764703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4317a1e80bc968a03a7a20452bf5c41cc6fdb5246092762807ce29bee8a57b8. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QM4TX1764705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dc552f848d98035aba04deef6de45f7eb8943431dd25adec75618419a5b33c. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QM4TX1764706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a312071788e7e6d85e3a278c0febe1eabbdde33c082b20f5d36b63cdd1e7aee. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:34Z), 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/QMBZ91409716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd62e75c606b6822a932cf285006e1724db576e7cc90affcb7b36f8e99be70c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:31:47Z), 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/QMBZ91409724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd05ad0b8e29204bec84ad260d11b17ae57794f4467fbefa780569dfbcd804b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:22:07Z), 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/QM4TX1592125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaaee677baa5662c0abde1f85245eb3f5931c8961ee3002a3564a1a147e5f99. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM4TX1592126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d8d779bec6abbc58aaf64b13b8b227ff06ef50fa857278f038a5886feda6ad. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:00:16Z), 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/QM4TX1592128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e7c84eed5fb8d406e6670c9657d22a437530b659cff1f554345b4c1fb60cd3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QM4TX1816437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30628e9f3fda08e707a3afa747f65c5b222d155999a848025833a552bc35000. 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/QM4TX1816444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14409af6893e896e52f5c5245be0971895822a143fa695ea089e75056edcfb8. 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/QM4TX1816449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa688397d9c54b1e9ac61ea3237083a4b20d302bc4d3d2cf9d733f42b96812ba. 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/QM4TX1816451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d0747aa4d92aaf823c420b0f8207f981ec1a490ba9debd799171e95603c5d0. 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/QM4TX1816454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dfe7e5f4bedd7cd7924a789c3e9e9f35a00bab3914ea02721df84afab52907. 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/QM6N22031123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bcd39b95624e3497050df2f04b16250e1c081e88da83e111045eeee0652732. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:21:56Z), 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/QM6N22031127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5adf930277e96c123f2defef4fcdd5e85f3b88cd36a3dd8748c1598ee1a5d0. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QMBZ92022287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e471e737f5309a29e0295579218acfab2c02d10a30b085b6c71d40b46babab. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMBZ92022294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7f53a28b7d7e0a6d9979fb8514e4d1dee32fda1de4e7523a0a3aac115b9f3f. 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/QMDA72142105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7962c2c8ad8db4c18121a840e0faf409829a045f1bc940acb1d8a5413f47cb. 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/QMFME2414998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e599280a3f2231f52683f6f53dd4ad5c75bb86e41ec344f7556e9fb540e016. 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/QMBZ92553828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb9158d03955f689f5d30617dd5978b944c8b8d74a5a99fa45f84927bc1b35a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFME2506074.