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 0xa2e61571d934ce0dc7b07fd3f10dad60557bbef32c94b1615c4f3af989e415e6. 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/664539bc-1934-485c-9877-9bd9642681f7.json and https://artists.proofprofile.net/proofs/artist/664539bc-1934-485c-9877-9bd9642681f7.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 0x61949ef4d6392d13315dbb06d82cc0cce71d209450243a46631a70eb8ed95be2. 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/QZGWW2130272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff30c90420711304d3d32c4ae12b263be17d71a923eacbce9d76f1324589f5a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZGWW2130692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8fad82d6242d2124c86bc1263db902e95583d6f3ee6ce9933bb723dda0cfe6. 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/QZGWW2130551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747bc9db21ea5a8eb5fa3c00cfb6fed6ca5f6b2529044ff6065cba778b1c451e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUBEC2038631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb52f2e35574e2237570bc34aa79101cb5cf2ad12bf89f21226cc946fb1a3421. 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/AUBEC2038643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2b7febc1b9d58503911f07503b89db478034fe2193ef26a13528171423be4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:57Z), 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/AUBEC2038650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305bf8caa7bbd74700ccefa22994eaefd57baf1a41443f8cdd19b42bf5104fd3. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/AUBEC2038655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a948c9c69910f9285ea16c4020339774ccd3d8954f4a4b1374cb0f1c35d25c. 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/AUBEC2038664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34cb4034fed267104564485755cce8ccf044aaae5f326c37297f5ff76f2af0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:05Z), 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/QZGWW2135964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf458a859c5f3984f2018b9d47d65a805688582915f393f59b5276da56197808f. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/AUBEC2041285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16af5271e5a48139aa5dfa3b5bcc928dc590e0cc6b99473d97260b21e4435df. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZGWX2146119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a3ac20b4bd5a27398708c7738137ae77d13331a89e2e68c3a19fd54908dcf4. 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/AUBEC2046635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac563c977903df7190f505ebb14d55108d297276a788b0529558503fdc3c54. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:48Z), 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/AUBEC2046265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab3d49b1c454b32e081c4f0b0b6c5056e7d345d40be70c6a4d3b69d784a45d4. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/AUBEC2055919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae410f3e1391fa61f4f99c6e9fca6d0e768e1531557526e5f49a138d16bf1655. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/AUBEC2063930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf592fe399389aeabfa8e5ff524a823de0465cf9ad05832278c5570d42a940864. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:58:21Z), 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/AUBEC2065179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd868574dd0f9ed7584fefce47a32a4507ebde4e6ed9a48a241e126f36fd3a341. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/AUBEC2070167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f098a4873455679f36fee817e3df7fdae66613768737027557c56cd8830930. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/AUBEC2072215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4ffadc17963d1812b9b49b685651236f1ab71722dac92ceb3a166c569fb2c6. 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/AUBEC2157515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78654ade102206386a1e1e50ab7e3109576515e9be28813eecd6ad90ea398469. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/AUBEC2171236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc8fc9be91d8e69ad82a174227a559fafd180c4ca0cebdae107d9724af408ba. 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/QZGWW2130680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658fc4a7eebd8bd3ecf7f79a242e6b69dc693b2f95de6b8f2755d2decb488fb9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUBEC2300956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ce464687b63a3b5cd0875328f2f88c239b47a7b0d1bec42b4b4fbfd0228271. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:15Z), 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/QZGWW2130682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13641f27963a19a506dd2c9b5e52de9062d4bb27902ebc5a7946728c0384d76. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZGWW2132740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e7cddc859b97d3a4f76a850bc684beeec4f5b78d5671dcb0f3271e5a198c6. 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/QZGWW2138388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08657b40902e9e1a7aabf51c402e548c2a576756eca529e44465c8d592f0e06f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:02:50Z), 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/AUBEC2344232.