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 0x1f1934e77dae0fa776f51bd91986a369a2bc996bced8e0f32ab12159462cff7b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bab2e30e-0527-42a0-a515-f6306b4220b5.json and https://artists.proofprofile.net/proofs/artist/bab2e30e-0527-42a0-a515-f6306b4220b5.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 0xb182afe57d4453695f6b678689501a7efdd82312afdf2eef15d60e05245a45eb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:38:01Z), 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/GBSMU4259211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee70e2b5a37ea8ff0e63537636506f771b0c5646f176c394b10d6b149c45d5c. 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/GBSMU4259212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025829f1cbc274c25ba45f8039d4c1cd235115e8d93a02f7f4e7b7196af05b5b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:20:20Z), 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/GBSMU4259213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a299f4b2f680df6dadad0c883312bb6439ff366ba88d3046e6f005050b710c8. 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/GX3HH2311175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daad43dbc58e99e02c4b9fcd3d9d044e81fa20311e4604c4d8fa31237ac0024. 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/GX3HH2329997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf4c57b42c01cbcdf1ec08875e50a01a5f10f21037dc4c387b25368e8639dba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX3HH2327555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe880b42b16a81d2d5c5447c3d2fe233a74dc13e8fe4a1047fad9f3277da0f8dd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:09:31Z), 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/GX3HH2399148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f61cbf553fa29a7116bc2992a8444ab39f7ce814dc5ac568c4f208ab72673a7. 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/GX3HH2380031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa16a7308014f8e5e14fd10efb194d827f395b0430a897921a88bbc836d6c9c2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX3HH2313152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dad2a3660f1afdea8ed224886832d48654b47bce773bd1d1bf9c15208640313. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX3HH2383758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d45ace2851a4fc0a9539214707621d2f6df39ad9a8a86395b8fdcc8fb006cb9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GX38U2492512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f55cfd997f35a8d771874635fec065902d073cc1f8b80e82115d153ab9de3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:58:46Z), 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/GX38U2491185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe374c9008909662b585ca5709daef97af4b122d7638cb2f98d8e17df18eaa19e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:34Z), 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/GX38U2449608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66143b7418d7118e5b6a0169f4a5e6d1df34791b2f28baed3149e2ee045c6aa1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX38U2415526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028c92ad14a8b05090db7079824d588d85139c288f2c8c6cff45fd663045a7fd. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GX38U2433048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f2d7a066c3006ade2485379ac72ffc90e27134ede4ef40ad7161966254fbd2. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:22:10Z), 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/GX38U2403836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76f2784ac005e91a6855ff7a245bd771e8bffe7951aaf3424c61f03d4ee81b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GX38U2464942.