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 0x2064714148c72aa140c68a19b67fe9fb6f2f8aa5cf421613e480b8259a8b8f4d. 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/8f196b6b-8314-405f-ac12-60be811ce89e.json and https://artists.proofprofile.net/proofs/artist/8f196b6b-8314-405f-ac12-60be811ce89e.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 0xe3e699a35caad794a73bd0152dba48cc7bc1feb3230b95a0ab41806572727e85. 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/DGA0M2301519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72ea1276497a9ac58176c6f97c7c1d3fe81d3051dff6f8434b329b2553557eb. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DGA0M2301521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53526f9997ceaf0ec6853da049f6ab87dad1ca66db2ef0df7f756c42ef937d47. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/DGA0M2301532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47011f413a07a988de63a01a34c760d48796784e01315124f469902df0d0883d. 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/DGA0M2301535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa942d63f02236c772e583376a8adccccfb22c718434c80783ff0d7bd10175c2d. 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/DGA0M2301541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b76d2fb5ae10f6b4120a7f43f590527bf462bfa5e13fe39c39148c35e7a0ba. 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/DGA0M2301545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f3ce7395acd88634ea3b80ab1b05a2e2cd4e3cdd56ebe5ac4ce21ada67eed. 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/DGA0M2301547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a048d1ae5f68ab2765b5ea54a46bafa436dba947a7ca1fe45a15f1b8c795273. 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/DGA0M2301552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dcc859bd3cad68f82c373f58244655be12c725112aa8605b791c8c55fcd4e8. 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/FRX872247357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd5d8a81f12f8c5c1a2205efe3dd0a8583c768b4c6c324667b0ee543a3e9170. 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/FRX872247358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942abb2c6b8c3f80cc375232c493748b4d2f0c14b155cf070acdcfd40f33d8a. 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/FRX872247361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d275842dccbaae3a0a0b2245a35ebd5b5f211d08dfd6cf16343f7ca09b9361. 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/FRX872247362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ddea209548a0fafb2fcbb5eee9e5ded02a87f24f78aff2ab57e55b62569b1c. 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/FRX872247363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6fde184ff77164d2bd91857b5b903b29eded9a462e13838502e5a2e4ecbef. 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/FRX762489517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c9b31fee6dad63c2a8f6c903cd46e4ebcb912c31100535d8f7a5a83c40520. 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/FRX762489518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa2da7ffac366db234a9faeae3393eea758a5b5de75b13320316b17cc51f358. 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/ZAUM72400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9c1bb79d4b598c84eb3a806329e2e6fe843b2646d76f1de4675d3a19396ccb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR59R2313552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12189f2de18ab7cbf30ae849fb6ac751d5570456569af46b3a8d6639f7dfc33d. 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/ZA4PM2200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ea3a9024c3bb9357221fcd8b4bfb40d56bf0ec10289d3140b90a63cb65c8c4. 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/ZA4PM2200552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cba4b1b3dcc03da2806c335dc45548c9bb0c3a8e517245c03b5a303defbf87. 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/ZA4PM2200538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fbaa0060b9fbe0b26bbd4121a5c170c7a51614c5494ae7b41fa00575ed31dd. 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/ZA4PM2200512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978f63f53b68f4566404a02f516c5da84fd493ec0ad10d489d295aae1e9845c6. 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/ZA4PM2200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32346b664cad43d7e582db6e71b8e9ba19eb4521e88d47ffccd9764883cfd6c0. 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/ZA4PM2100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4254277d086893bb27560083c98771f9c844bbb0b480550b19ff2fdc115d6b5. 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/ZA4PM2100288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092243a804ecb8e84c2a85b92acb93b0506ea1435223ce36450b641d845dd06f. 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/ZAC012100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa2da7ffac366db234a9faeae3393eea758a5b5de75b13320316b17cc51f358. 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/ZAUM72400021.