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 0x8551784b3188b474f7250f9993357684d1bcc4614664aeea80cd0824009e3871. 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/5d602123-253a-4ec8-9f3c-4dda3efe9f3b.json and https://artists.proofprofile.net/proofs/artist/5d602123-253a-4ec8-9f3c-4dda3efe9f3b.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 0x7e6925cab73a7ff93baa17e89d86d56a44854192e44a68adbbdfa526c2de006d. 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/USL4Q2230749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac7c6139ce03876eaf360ee335ed6e1546bb7aab1527ea52e7739dde6995c31. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USL4Q2230753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ef0bcb570e63ca0f5c35711fa2248036a15ca946dcd8caa0cc95a088f745ce. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USL4Q2230754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07104ba5f636e3723bd76813344a07e58bc13b41ad9c6ddd865f692d02b6b3b9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:31Z), 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/USL4Q2230755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8bf3b276eddcad3da708525833f85de406e0ee072e2beebc98bf469e82d987. 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/USL4Q2230756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f78e9b408e4310ef9fe34492838e857bdba8e55407558e94bdea4d29b6bd811. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:13Z), 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/USL4Q2230757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16391e951b9a90f17b55aae6891320d17a95287b0728628c8e59a5d810a0b3d9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USL4Q2230758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321fa70bc7264b873473baa4051d449ba88ac7f4755d44d5991b2ed6c02e5aca. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/USL4Q2230759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dda5600c51a785e6b2724294643afd7da3dd8aeac30744f8dd2ce9d9bd97c6b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USL4Q2230760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dda41cc78d4f9c6f0d872285d4f5b081696cda13126c46bf0c35efe11e95619. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USL4Q2230761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee6db4ecce64a37095816f57d9c86dde83f9b4ccb21bc60c106b67b8c2c4c8a. 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/USL4Q2230762.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf75889a981fe70769b3c3379df0011beade055cb2d4ba397de864a7decb34e7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDY42403465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d6e61ab196480055045a0b47d1885d51288d376dafe22471e849b394af4a1b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USDY42403467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe738c2073882cd9e760a11802038855bf2703103f5416ad9a0db6dfb37610e6a. 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/USDY42403469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b42e4492625ad6a40aad10f201f862646255d8473b5b680b8b2f36f4d402754. 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/USDY42403470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52940673d9e3a5caa1f4a27d679762b11e5522cfc5766027831b19e8d1ba409a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDY42403471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a2abe0e077e41cabb4cf25b68418a2d7354a4fd56c6c75b3a7fc36478fa648. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/USDY42403472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e815ac18399864534296fe27860e2db9f4948e18f0726a5309ef8b2c4ee011. 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/USDY42403473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ae8b82843483e2b4c65b456c2690784b752d9b81b9f2287943f0948a5b8ff1. 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/USDY42403474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df90d9d97c71ce1538d5acecfe11f38ed32d9fa1696d3b0deae2676c418e05b. 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/USDY42403475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850b24f4d9abf5c57004252958f7518efbeed9726926dfd67515cc4db9911bcf. 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/USDY42403480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70dc1fd5b25cae738122c4db6338cc72c5d34399e06eb3f4eda861cee0f2479. 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/USDY42403487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6557c2e671a132bcd471f216866c472cd613fcd288a40a520ec06e7f98df9438. 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/USDY42403491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bee83cf33bdf212d633562ab6093df27836699076503a3a3bb5722ba1230ec. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:41:24Z), 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/USDY42403502.