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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c62a44e4165d378603cfa1f73ac9402b1d6c5d03e659f3ccf739d42b921042. 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/31ae4a24-767c-4490-9028-fac596ca42cf.json and https://artists.proofprofile.net/proofs/artist/31ae4a24-767c-4490-9028-fac596ca42cf.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04a9ca294b27f0032b4f0545b1d2a07c330931b3db2efcc6a31aaef69a9c32c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZ5AB1705469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07421c602803a53a2e849782e14c60eac6f32f9bc9c7d89fe2ad118a6433bbfa. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZES91887309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48406dd055a4e35c1461bf94abc6f3fee4e9980c7d6e85b7d1bb62884b018a65. 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/QZFZ21994839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe385ea93e1b01db9e287e3a705b29a20b529ba90b55fe0a9e765d28bb86122e9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2044784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385b72d63d1b682d4f904a9bbb63822ef3a98ac1d84cf88fcaa9793bba70c12b. 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/QZPLR2017454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5edccc75b6bc5922477d2e28f9f6385247404e5b46b6141edc31e1481cd3d73. 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/USA2P2107209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba99573c625dbc778962f4527a3942757436995f8790803c7363dd2a2eed91. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USA2P2161520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8e25a55f2b4ad8e022ba26874721fc76936982cac95a76a56650f06457555d. 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/USA2P2161522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2acc00f33e9adfad6d924c48587332bd333f4f8e54cb8a1b3a15b72557261a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USA2P2161521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8e2df20781468f0d3759a08f8d3d0704fb4c07a15b7b2eaa0c05e1f5e98ea2. 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/USA2P2234003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23f75cb0b1447e2149dfc97b23c98bd5fb8b67c7292023eb533d54b60419064. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHN52482259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb037a61e418b4f29eb5cf22709744dc6312fad1c9bc3d799d60978643639fb3. 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/USA2P2421576.
Hitech Mania: KiLLATK and Friends, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d09e4c6fbaf69f1d4fd2215e22396c8c9615d206379edfad3c830c098f6874. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWV32432701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c243fef9136811b415ebbd207a56510a915630d782241082f8a9a8df38860e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWV32452465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df89d60ebf4541f2d3a74b325cc2845a290d9bba65668b6a341e193240f4f62. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWV32494101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c727fd2887efb45a3959c6e81b795971f53d2822ed316afa1a20d1fd229b29e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ8A2406938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125745eb2b51abd39af5946f54134d67f5b4c37f08707f21db1762d0b187266e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWV32478228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3eb1ae9870dd212d77858c4272aede6c4eb76ab2e86d91789615db27a1550b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBKQU2109529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102e61ef910c4bb963d2fa0e7bfd61d263caa70eb754d97a2850281a49940c14. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2094224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed654956ba28a732146992ff505914f7774864f95fb352d10ff119219b9a25. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBKQU2091382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1ac0a99391b6700434a2a5dc5b3a894336751954fd17e73d679657b7f5499f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2125053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437fbdee9102859ea9df5eb143a90dc65d22e5825f400de88c48fa71540e0918. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GX8KD2442052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e866044e41207249d7f7e1bd676d0e1196fa6ca6cb25507970cb846275ed2. 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/GBKQU2294942.
Universo Paralello #16 (Compiled By Swarup)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5686d1608fad69c1127ffb8d0b49d8b630615b86800b81882f806ef232b13ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2314151.