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 0x1d50a7be3f72f606c0be7be3df1bc5c0a204daaa3703c349fc65f3be35382238. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7623e71-3df2-4cb2-9ef5-8dbd65c789c9.json and https://artists.proofprofile.net/proofs/artist/d7623e71-3df2-4cb2-9ef5-8dbd65c789c9.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 0x87274733a77632d0330cfc06a73e8504b0bb66ecdfc2190ca92f7759ffdf5e15. 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/QZNWU2154353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce989244ebacdbd43194889b24f2f81bd6d8e77645ccb98244b5cf25258e0a49. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWT2310590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cbeea17585d8d60142e7509d2d128384eba2edb60f327c9730842bd09f663e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWT2310592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9e5c9eeaf0f5e51044924d5d34e6eb8c982612cbc31d6ef389793eba18e293. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2417239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4da7459596c10d90b5f259d27bf9830b2ed97c67ef482bf39323cd32ed2713. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2435606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8678f2afaa8f7cb86876bea1def605b37f8bd2a76bf660f8b0ac55aafd1a33. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2435607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a6e6a5b0b490900fb0ed5ca835587f0abba0dddf7b5acf36e44981273a0b94. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2435615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8162b4a34d3afcbeec59079fd32498cf62b190018b4f529de461110cb7e8737d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2435621.
Nothing But... Dubstep Essentials, Vol. 09
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2081033c7c29162714e7eba8282b626e08bf6229bc13b2a1205f5d76659d87f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2023909.
Nothing But... Dubstep Essentials, Vol. 07
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b8de42d5c0a37864784a1e9c9f0dc218735dbb66e968c9cf79764baea4c3f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM42K2590955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf684d735716366ffee7b56efe0509bffbaab86d89668e92bda34ecf17c2ffcf1. 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/QZMEN2498069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2ffa3fcf3552c042d17961ae444f46d8620dc1eefa09731981660f1018ce95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2412370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf64d270c79e055e9eb797253d8d211f2bb9bba86bc2df12cf1ed9402482dcc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2412372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19e6a0ffb8437e56abb8e134430529f2f08980c2014a33500dbdb1b6378cdb6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE2423978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4404a298a8c08d0accd2288f05912b74e54841670b0d406a08c40374638a561e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2426414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49c4ffccea9e862b9b70a6414d72c4cf3b483d24b2dfc966e4e80c3560eda1d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2425168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6594d634758738186b6ce7ff557d5c53f79fdf19bedefdd20ffd33da47bd2f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2426416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97deeba3e7b5090642cf11cf1f3201e511d822963098a2d210a3b0ef80c42fa1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE2427043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa465e573e9ed2686f8577f8fbcb0bcb1e390aff49d8c084dea76f5c6ff2b6ad5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE2428701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df064ee64f064141b1c70be241c4eb935225f6c9df0c22a00d9e8f96b5e7ae8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE2501003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fe82a1b08225c0c2f9caf2634a893921384cebbdd654cf18babf4f0f50a266. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2501007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2facb3900e652aadf0b97cf476b007c834974f5084792d6ee187c75f91be5e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2501008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c091ca9ac7f8d560fe1fa91d8eb7569ab23765beb8b82e8d40d54c76d0d852b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE2504558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601e7d2ddc10b30f4a27a8812a617652beac416495cca1e097cb595adea6553e. 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/GB8KE2504562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93257f01221c206693cd18f53b1531ed2fefa9f26dce4616ff1efcf92acb8a66. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTH92330632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded99c30928c0f49da5afa542c11f84f952f2994197072f90868bd156c50e5f1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBWUL2249316.
Nothing But... Dubstep Essentials, Vol. 08