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 0xdf05095476a32dfcecbfc7075edf0f7a58c6f9e2c9b1b863391d6dcc8aa3ee47. 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/14104333-618f-4cfe-bcaa-f692e36eac38.json and https://artists.proofprofile.net/proofs/artist/14104333-618f-4cfe-bcaa-f692e36eac38.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 0x2e893ac5c8b213d0fd8b597e3857b177eda45565cacd92ee5ab04215a4b992cd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ROCRP0900921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7b045cbedf07c8802242172aa4a143aa667c14754dbc73d36358f611a6d222. 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/ROCRP0900922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482eaef724c0d8577ea5bf65d6192a648d1209de5b899ecb53d9387c7a971d30. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ROCRP0900923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb5760d82e8625213501997a948e2a9d9ce50f30d65083dd48f310d80d381b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:26:48Z), 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/ROCRP0900924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc5ea9d430132cef8986d8caff7eb039c3f8216a22afea334b9d5fef588dda4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ROCRP0900927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a72a8ebd6869000576f851eb8e6c7b164a790dfa34a841273129eb415ac3cef. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ROCRP0900930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc2f68209e74f07d17a17ae99fb811d5a8e952865102f6f73621b7527c76937. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZFZ31961357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1521934119b4f26acc502e2b400b8644b5329f464b6e2bc9c01e91e70ee594f2. 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/QZFZ31940501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda787863348372b7ae060a579dbc5592690d846270bb3d4033960f468e4017db. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ31940504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdb95f051a06634b5adb6d5f6dac0da36712e093157b35eb4c62256fea0bc72. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ31940518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd52a297baf20a5e020403e82638c1675794493b6332d70b13ec0ac5236212d8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFZ31939469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1765c0cf8cf77f372876791ef8ed6352540ff07af211cd76fec8ef3eff90b1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ31939474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a00067416ef969c7c1cbb1a3b1df4b30e166a7844159293f9acbfdd8170691. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:39:24Z), 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/QZFZ31939477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e32b3d50aa8daa331437155a02fb879862992bd2d03b1571e5648e189f0e6a. 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/QZHN51943629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678c44fbfe1b4c50ab6cb73b871dad08b1ff6285b867483a1ef291e67a4a56d3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN51943631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bcf477d3dc7401bdecd122276cc450e434cc3d43f668514e6ffdd9048e33b1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:26Z), 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/DGA0Q2481875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54114dd07f97d81b21df56ea60401556fb9f6514b1140cdabca8e168a2c8265. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA0H2421100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40f1dc70217f205e0406a7ee1979ea78c8bdee61c9ac1aa08ea027837a2d67d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA082422386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fe2d31ad56dc98b9030e9447dc793aaca125d98d2aae20aa8e96eb80171ef2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DGA0Q2481876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76725d3dae0282bffe643018d148e68e1c6db8e3b775777bf0b419b0ba1f8bde. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA0Q2481878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b6bdffc40b87a14663b828f449cbca8da457a648c2cefaf3ea88ce07e5dab7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA0Q2481880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7c9681791c76a989ef1b30d5daf9ba1b64fbcebee1ff29762b0c9f0c042336. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DGA0Q2481881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734133e728b63fadc98e2a34708d59279d484e2b6cc1292ad173b67b858a75a2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:55Z), 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/DGA0Q2481882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfae6ac112281b83c227457314c7d1d2a81c7b015a0dbb97f6430500f9c5b634. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA0Q2481883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455c264173a19ca95b8a1c3001893d7f37ecd005c3bfc47fee17f33b319ac55e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA0Q2481885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd0081a0bc2b85f56c0f141bccb58f95101115f1cc17f66a240dd228c949f6b. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DGA0Q2481886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a8f71e3eb0d52c98e2c1c4c30569d639d2ae017210dd740e25aae7b6c0ea3a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:18Z), 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/DGA0Q2481887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a9f4d1cc93271bce878c8201df308b86344717dea26031d75435217bc31870. 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/DGA0Q2425482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3150d292e76ad8d0b02bda706ea400959ce871d3bdc477b4a24ddd0f68c2ab15. 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/QZWFW2455987.