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 0x45e61a3710b99b2a3bebff08184233c20b2ec96795caa23cf4de1a5bf8f953a8. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9a126d1-944d-487d-90d2-ff77c52f28de.json and https://artists.proofprofile.net/proofs/artist/e9a126d1-944d-487d-90d2-ff77c52f28de.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 0xf426e6a23c9f4ebb3d5796b0080fedf1ea653d06aed9a6976b50f554b692c73a. 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/QZHNB2413340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc46579a3823fd9c1b423397cdb256e6aa8e39d280f00967666598551c92ab. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:20:23Z), 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/QZHNB2413344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd2c75bd411fe1188e1b3354f8afe47a6316b54d86bc98ded453384d23c60e8. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:37Z), 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/QZWFF2424762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b790a486509e79e2e5fcca0c8a7bd14d5788a53ce2699dbcb275792a82befdb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEP2541072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6d1370bd5a07250f5b61c8707b7678882fdfcc9fad907289aa4dbe8fa4c5e8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:30:57Z), 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/QZMEP2541073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7ad0550aee3cf21062ceb38455baf2a4903c3f4d953823172d3ce30abc4402. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZMEP2541074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29cce46e0ba4c7c7ebe8e35de496872f0094b0618dbc262a982476746aed28f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEP2541076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344d938679146b8cbb855158a886c57e7a579c7f773b2e9dec1f26c7d1e8e8f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEP2541077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226c3c3ac31f045948ee75b809448ccaf90d9b0134eccb1972ddb2e7e35fd580. 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/QZNWX2506257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c48ab4f8566e1634731cd0634485719dde78e347125e9216fd0c5946dfd3e9. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZNWX2506258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d815d86c6a2b49a66c6744e98049918159e8927d25de0c7bdc0a214f8d9fa0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWX2506259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c03144f625b0c8faed7343c9435477288032bc0cc5645b60fef345c4bfd93c. 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/QZNWX2506260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd96417fab7a4415b6f91dc32d71e1941bda49d0b54f1bbc763204710f721bd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWX2506261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f19a845b5ef9a7fd57521d73b8c681aa341c4fc86f290745a1326a309f7c3e0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWX2506262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92233b30e1590c478a473fc6c5a7466460b4d9520b1178e425e1676508cb35cc. 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/QZNWX2506263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb630d4cdf8dcc9aef648e9da2808c681eee79f21f9eaf7e033506bb3bcfa14. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZNWX2506264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa655f302eb4e5c7561ddd9f7e22e23aabe9b9aac39bf5783a3a959735e9ed77. 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/QZNWX2506265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3334ad4c6336e6d0e7315cb4a4b9feb16a8da28fe1c6fd96d9e24e891c7495. 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/QZNWX2506267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2cb30f112cefc8e64744cfbea89d46abaa1cdcd9026999057115e7e1c92be. 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/QZNWX2506268.