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 0x1d1eaddf96cd6c9b672920f0cc376ecd33075f90c0b4e3f6739976d3d2a5e881. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4aa3695c-bcf6-476e-8c37-fc908999d744.json and https://artists.proofprofile.net/proofs/artist/4aa3695c-bcf6-476e-8c37-fc908999d744.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 0x0801458d6f4bd855f1516b36190cbf7eba60dd18fe0e7cb67e4e4268c6ea23e5. 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/QZK6F2027827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f64b51cf203e3fcf4992fbd6d657fa47855b16d2754cd5e7af57cda7962119a. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:56:44Z), 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/QZK6F2027828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1711c8d39bf46357510f9f0d0f48d946531875ad7248e311f8e6c46180e6c18. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZK6F2027829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb596e78b1ec760af5459c4467fdd39fb9a4448ba8ea362537172fc63ff72474c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZK6L2095667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccff1c385a8de3e75f4801cb91d24f48755c86dc3da0cc3e5b7c0dff1b5dc6e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA42143359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07cd06fd97da564d5870fca66e74a76b45f8fb2c85e4edc6e3ee45d26b24709. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:32:39Z), 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/QZTAS2104948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d1c008fba3662a01539f54434e9187ef6b52e651c11bc9e6f67ada6f4d8351. 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/QZRP42129182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1b1b1a952f2acfc01e6543500992af30e55b366e1196c6a3d7fe15664778d0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN52128196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5cdba6a0e778643b5edb4355285a5d28dad72d6945e02ec578d395a9df97ae. 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/QZTAS2104949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece417e242355d126ac4c417b548330edf4de2cf954b6ca18e0b87f5cf490b89. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6N2288404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d2c4fdf6d1034502ead92abbdedc92d5473758546c81b75dd3f7f5a795d34b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTB52288681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1b876b9a12a6a548675936cef69d9f926ee8be580bd42d61c45a5b9fcc2c78. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/QZHNB2399120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf285b1ea66a4a21788ea244f7c1baf41646f36ed75df22c5ade07496791a47d4. 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/QZWFN2476691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95ec9050aa4c42de63ebf40a9bdb65ff2939123b06e7ffb84b1ac466237086. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:40:53Z), 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/QZWFS2451843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fa946715eb720f797f5097cb54b3581b4b386a16bc5591ed9398d65f116e1d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFU2459335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe528e965e99ef63ef0cc3a052e1924184165f9d3f696e39b29ce7dbc5d94898b. 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/QZWFU2459336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845e83ed4a98e089867dd786679c872e06ee05405c01c28f7b0bc654caf4dd21. 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/QZWFS2455771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95ec9050aa4c42de63ebf40a9bdb65ff2939123b06e7ffb84b1ac466237086. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:29Z), 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/QZWFS2451843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb475d5172cbde474c930a733f85271da1b7964c7fc230cc6ec95cf7efd24618. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:59Z), 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/QZMEQ2275118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece417e242355d126ac4c417b548330edf4de2cf954b6ca18e0b87f5cf490b89. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZK6N2288404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1b876b9a12a6a548675936cef69d9f926ee8be580bd42d61c45a5b9fcc2c78. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZHNB2399120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9e0ec3ba2029f76aac9c6ddf8add0f76e7333764d208e0ae80864474a4cb6c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFU2459337.