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 0x28635cdd4899ced51e215996d6f1cddb48c2329c64e5bddc537c476e26740634. 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/eff447fe-5c5f-4e58-a25e-d7c32cbc6ea2.json and https://artists.proofprofile.net/proofs/artist/eff447fe-5c5f-4e58-a25e-d7c32cbc6ea2.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 0x8bc073d1e4853602898c198549f8438f318e324983695d13cddb7dd170e49e61. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6H2059135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7e953563402f5a8597eee8c7d6c9dc95168212c7015c0c01f374af84a897e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92253001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70085bf7cf9efeb2ec2fee1ff675976f350fc72fdf6786fe2b79b2161c39c6c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92253002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cb0334e0df51aa503cc6410969381b35f5bf27fb07be399142a9173e230efd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZPLR2188989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3358828420e3bbf06b0c608d274e52ce4b3ec3b6a1ae590f7500bdc6f98037dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92253003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a75cdda64790c0b7be29ef72931a92bcde17757dc0fce7b546f572e6bbc5c8. 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/QMBZ92253004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59377676585f4dbc4ea1f258e217c45d9ea16512eab9a2549f66b606a93d21f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6Q2126022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba43f23c427b0ad7b0572aba1d227771f772c6b7d7605177fe9febe1297aff7. 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/QMBZ92253006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59059dfae53ab112619e833f3f511c3f15170c8bc0c77e77e767510cd805e71d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ92253007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270d30678f0c8cb707c7bb3d43b009206af5b8d49902f83ce978ba235ff3bc78. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ92253008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd807ccc66f44e1da7714496000a521a3bd2fbd23aa185e5813f012bb9b6147. 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/QZNWR2455633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccffd4315d2da55563316f19b123ebf5b9a9fdda1b03b2f799c1eea9f823bc2d. 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/QZK6G2429274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c668e791511f4334a9d74b742574ba92ff58ab5637bd49944d79b17fb046c77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAW2460535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcb7557801c8c2953a6eb213d00de658e582df442db6cb413567722f85e4706. 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/QZHN52458273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59059dfae53ab112619e833f3f511c3f15170c8bc0c77e77e767510cd805e71d. 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/QMBZ92253007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd807ccc66f44e1da7714496000a521a3bd2fbd23aa185e5813f012bb9b6147. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWR2455633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccffd4315d2da55563316f19b123ebf5b9a9fdda1b03b2f799c1eea9f823bc2d. 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/QZK6G2429274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcb7557801c8c2953a6eb213d00de658e582df442db6cb413567722f85e4706. 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/QZHN52458273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccffd4315d2da55563316f19b123ebf5b9a9fdda1b03b2f799c1eea9f823bc2d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6G2429274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcb7557801c8c2953a6eb213d00de658e582df442db6cb413567722f85e4706. 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/QZHN52458273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b7934861c8c89546a34febe9e10e883ee52f098311d4e6ab899d0d2eaf869e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWQ2320641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa556c79650035778da03544258df16d19488cd977f21057e602a6955e18cd666. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN92390671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35befaec01e2cf22c3482fa16d2a7b7042862b2c27ec7d2372e085ace44c4bf4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZHN42305937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309466075142ee91a6d061cf00a9adcc899c2aae276955aa893ab581f3721f6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHN42305938.
Pink Eye - Frankeyz Remix feat. Sam Darkoh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c30b90635f1eeec188f2ce055ae05ed38d38ad13fbac7f80e9a3bb0bb8e89. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHN42305939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59377676585f4dbc4ea1f258e217c45d9ea16512eab9a2549f66b606a93d21f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6Q2126022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db233247588605ca398583038530a904435d220db3bde3f88597475b6e2f301. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYY2079274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9735dc452cd41a4a9b753cb3a49d369880b09deefb084e2a2e821c7d3547c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYY2079275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c0fb1986d178097a787d7bd5796294794622d6cc0b05417bd9022e646a4d38. 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/QZFYY2079276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796d3a3a13629608aad31c77d91e094515d86113c07003ecfe4a21dd2744fd39. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYY2079277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe634427baa78a1aef59f360ee1a785b35841aaac8172cba01fb812ea0451e96e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNA1953102.