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 0xc76bff44a6f0ec75a547cd72ccc139ae00fb663889b9b877daaa80c6eaf18fcd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9d40d7f-4ff6-41d9-965c-bc7f090d813c.json and https://artists.proofprofile.net/proofs/artist/d9d40d7f-4ff6-41d9-965c-bc7f090d813c.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 0x3072cb4f57c8f42d68de2955ece8035ca7c4534b6ddfa6d3eaadbff7f437418e. 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/QZ5AB2072673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c2750316084a17d4c49708758e766d6d64a3d771532ee2bff0d9286f17654f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZ5AB2072674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a21ae41c5266b9390a93e8dfaf91dd90fe1b9d478c5a57f6bac15de042415e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:33Z), 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/QZ5AB2072675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366ab24289463ea0ef57f4a457037d6154a85c5513e3e3e043451cc4963eca7f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZ5AB2072676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc2d8b6e62e145f51437951a52213ffe309357f13e99d3c2b504268598b44be. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ5AB2072677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607ca2ed0d536fd6dddd7cea67d77a3893346176cff5ee585b8177bde996a7dc. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZ5AB2072678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19dd8f56380a7aabbd985e7b1400dd41af12887f25014d300d64a071025bbde. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZHZ31998295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d359b62dbf0f52622d358a3f823082f999b1610476ede7b8465aa74f1d22a6b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ51958405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e58727c57143cf83ddd1bf44b32efe0650f002554464313843f269bf257dfe. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:20Z), 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/QZGLM2055333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f4cd53e6d0557be5725a04aa3ed23054f8238c9a529e0bcd1feb1f2e9aa430. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZGLM2055334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3a344e1b53e78bb1ed93878d5d44ef4898b90f65d4c527c05c67b52b4e2b26. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZGLM2055335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdded1d629350c5073982a49b95c3e86ed9a8dca658641794a5a85936b4a37964. 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/QZGLM2055336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5bc6cc8d8c3c3443e121f29878157fc3c6666d25b40ac1a4a0bc4d02b0eeef. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZGLM2055337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1b1ae16aab3728f0b10958cf85c83c4c88dd8e26b277b63d4d967f75f2096b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZGLM2055338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11b4fa3779caf006f87abb279c2779226211bc7a4d4aa64fdf79f3aa36e1cb9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZMZ92135146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000bd080cd98065edddc130f7f546b16301bd67220a48ad605658c64fff0d4c6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:55:41Z), 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/QZNJX2184426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3052ef7b453a4235368500c2a7f884810346a1f0cabd48e68911df2dc4604e6d. 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/QZGLM2246925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38109f265c000c4eb6ea2f05c012c624a3e8260f3484b2f1db908617aebdb460. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2263494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd2707dee26c08af0340c4d3e4b2cebaa52baa0c0bfe23116db1acc2760c0c. 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/QZTVM2263495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c24145c81c1539ab3684f85819c25583b1fac21f7b451fe47aa00657684273e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2263496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1da58200877c773f8f48aa5166ec4673ff984a58e8d51516479a2e77f346fd1. 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/QZTVM2263497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6902f788f5998613d6e0e929b65e61fd4dd26aa3daa5ecd7d25b45a05163c70e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2263498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995b86bed5d020693f467fe48be6227961d0c46520611edaff8d220939900e01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2263499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f134f90dce13838d251e3b17947fa299bc7db0b6e6454305d05f5a9091cc3d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2263500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8edc35a2d8bb1e3fe23698f9accf067b6333dd3c288dc7abe467ed720868418. 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/QZTVM2263501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2b7b237fa8c6c06de6f233b700c8d246df201b230c813b2a17bb49080c8a26. 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/QZTVM2263502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feb5ff04bf7d9100127e0ef11fd52bd979502f059ba689982a8b3052864dca7. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZZ8A2526147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e7dfa6bf5363c65b86d4d7312df9d454bb75374bd711f2413a572e8d5a6e11. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ8A2526162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf00aae4398e1c0eb8643a3ed05fe41ab60278f91e50c3c4fc5c5f27dd802163. 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/QZX6V2301167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06294389fb0a1a60b95ad4233fc7c344f5be741ce0889fb2fcc9e7b16a68c619. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZX6V2301170.