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 0xddec02da051c67015e6c5afb68fd784e363e9ef4882edae3f5cdfe7870d5eef4. 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/812116e3-cf86-415b-98c1-1b90d232666f.json and https://artists.proofprofile.net/proofs/artist/812116e3-cf86-415b-98c1-1b90d232666f.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 0x205da7b01da5f110996598d333c9020362e907dc36570c97e2ffdefc074bfb99. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDVP1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60214c69fd16f44528f5eb68979d8324b3db6dc636c64d900887cc98cf014bd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZDVP1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ad2e40dac5332f3dda9fd1ea95ea7c7c508999a3876ce3cc1c667869569e1f. 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/QZDVP1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349312d01ce2a878bcd2e2a45696342f24355a0a7b7cfa02dad98d68eb8c27b1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDVP1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f70df2392ec75bc63c95a09acf11d80d4149b2da04c01b979697c6ccac32be. 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/QZDVP1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33db19c88306df5be48ac3706c248edf6ce2e4d603fb18e461291f1e5c2f59d6. 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/QZDVP1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637874545c9dde737178af91315f4e38550d9f0c8efe5940836135cb2b660201. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:59:10Z), 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/QZDVP1800025.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d6ded80cc6a3aa738f12152f6b3c299bb3579afc72f8f92ad579e85b1efe2. 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/USL4R2121000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09a4f08c6d9abe32584eeebea48be77ca2bfb9e285a842a952a0a9609320479. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:24Z), 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/USL4R2121002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8638ef3da35b19c36a2d56212f0133c9efdb1190d5a6c36758ebd81255afb5c7. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USCGH2209467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb28a5dabc9e543312938fe535690fa81659fa0a1a3acbf3762deeb077b6d4b4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZDVP1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018900c44a79c7bb10f894dee4d395663d7d28b00d2e7a9310ff7b296724eb6e. 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/QZDVP1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627e6c8d2f92fe619d3c317bf82acb124a2dd3424be95b534b8d93fe5ad0ed6b. 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/QZDVP1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cb401591287d677b56f4ab6df3082634b342f42d7d923a191586664f0a0dd1. 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/QZDVP2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169b39fb7d86d68b6e28f8e027c6ea1a30a7e455896b5ad23b769c91da2f8a39. 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/QZDVP2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae155381fc1258d72ecbb213ed4561784c360e04b5a45800d6381f13a5534fad. 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/QZDVP2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43831f15f286c7de66114bff47960a283b9a46f2bcece0f1b4ad0cf633c1b96b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:37Z), 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/QZWFE2337427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6d001f628ebb0eb6ed20f740d0c34436d42066fbc2d4ed5e4bbd88974f6b5f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFE2337428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf156afbd251d95a55d2c967046e1b1b969edd1ce2824114ae6455668ff6933a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:19Z), 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/QZWFE2337429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbab27abbcbbd18771d1d7a0ea7b7dc1321487561037cb09eec8091edffa551. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZDVP1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0ce87bab2cd8a255b55ebb1d950468e623f0aa2542a15ce914ff0a122d63bc. 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/QZDVP2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcbec5c5a6bbb38558437b03c680b70ef367383dbbc5611d1572f5e6b79e6c1. 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/QZDVP2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacfc20ac13fb9788ca7ec83d518df1ee3c75787b18883e756c67338e7852ed2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZDVP1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67497ec2072c40e5dade989ad44f9986e4514a5d992035a5c4c77a405004633. 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/QZDVP2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415d4737452d3305da96a90d123225db2c414b59b1076083dcb61b9648d7ea05. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZDVP2500071.