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 0x3f2ee278bd5d92e959a98db1822b24b9f5dd283e629c20b2295b31dfb16e2173. 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/2a102054-a54c-4eac-b532-1f7d4c136852.json and https://artists.proofprofile.net/proofs/artist/2a102054-a54c-4eac-b532-1f7d4c136852.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 0x0975824f002bf718201582b68463153ab77b251c9c7e663b81d71607cf1919bf. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLE712200475.
Poison Apple - Ciaran McAuley Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eaa0612c9d58cc85eda5aae926d03d34cd9d2eaf531a685cf17c12fa5fb07f. 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/NLE712200474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a418816ff8ea346ce0234939f00b03d7c9250c5d638e174208904b6b765d88. 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/NLD682104253.
All I Want - Craig Connelly Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc4ac54a1ebe41e383e8a445fb0f9f41b6aaa470ab809604650225a37161cc. 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/NLD682104254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a0e5cc57b0c39e502399013fc088071939a822482874e898e1555c02330650. 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/GBKQU2098757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97452026bd1afc6873f6068d575163f10c15fe92b2c7018f1db8cd4cfc9a2d3. 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/NLD682001199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c575b29ca80680188ea3d43c7034b4b099be141f41b182c55d0dd79b4b59d9. 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/NLD682001198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d63b0af6ecfbcefd26285a58d65061b7f07e3e763928a952b7f85b7596417f. 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/NLD681902499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21c57084f31455e23ae5584d6f67411c5a6b548561132d8ba4ed791e9e17e39. 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/NLD681902536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a26d9cf77e39dc9f83bf5dbb8137a5273c8fc075ebf85d141b05de9ea32b0f. 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/NLE711800606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7118529a1255c9880068f35fc448a157153a96d9eace618395231da4f391cf1. 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/NLE711800605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af489621e40939368a090323881e412a776a06b964b537c0b9df63a67fa97b6. 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/NLD681601423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6962bb9d7166ae4a5e5c19dfee8a7bf28b82dd9c79e2a990276df33ac42ead9d. 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/NLD681600982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cfa7729a30276399d42623e77ea5a519314fb142dd766f669441e173bf9a00. 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/NLD681600983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f2a553c4b0ba8ba77f1b16b3e67daca10d343aab3d0d87f4a35377040b136e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKQU1640530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcf1413b81887f366e744279779d2245a4977be959082de73da4799fbf16bfd. 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/GBKQU1640532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e47cf842aefd79b032f55cc9b68e6365cacc6dbdf876773fd3d7a929379c5c8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBKQU1640534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9847c65ba3cb9abb78c9536237e4c689d23d1eb1fb74806c47e688edfcdc23. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLE711500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efd4fe686dc8d3c6490ff813a6a80c960ee0a50e97a98ef5b910648058b701a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBGWM1510052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7355fdfa2e3ae517bf0e736f7bc0bd5433a2f48325fb84d77ff0ed6ce7d4fdcc. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBGWM1420001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381c13368212bd4921a06853986221629883bd51f84d7cc0244d4bc3184fdc04. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NLE711351802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9527b9a059ab93dacdb7491ecacd345ac59bfde18b7aceb93d2177c205d2fee6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLE711351803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026a6cfcaec9959d9301a538419f0f6f70e8173d6d5184fdbae95ee3c1044454. 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/NLE711351804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf200df7cc96b58a1c3a57d5353d4c017a3cc05d52d7aa9da952adfedd6b56777. 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/NLE711351807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40141bc73b3785510398c027ec3ebad58107e9d85da9586fdef5373efd328a. 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/NLE711243701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2142e689eb857928f2dd8c18fa7abd1e5cd22a5f6cbd000797c2c41e2274745e. 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/NLE711243702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e8a4923f5f035b43782c8c40bfd07d900dd0d77e6abec181d49a822de2314a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLE711243703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca18d021e899c784559a6562ea196c230b665678265101b3e45775936b08e68. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NLE711243705.
Nocturnal Knights Reworked & Remixed Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568479d79b45bb25d1f40eb05c8a132969383bb57e5649ff981725eee5040fae. 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/NLD682004081.
Future Sound Of Egypt 600 - Sands Of Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef765624c146d01344644e3fa1ccfe3cba1e6c7c6c716e2961e88496063f267. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/UKRMQ1900623.