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 0x0dcb94a622c9bf797f1e0e11c3c15dbea22335f43f619124ae515c224c6cd1a3. 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/7671b326-c563-45ac-adb8-09197671e1e6.json and https://artists.proofprofile.net/proofs/artist/7671b326-c563-45ac-adb8-09197671e1e6.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 0xb7ce8cfb38b08f308c67c49815174836173b097753502fd0c0a83c7689980ca0. 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/QZK6K2441062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce8cfb38b08f308c67c49815174836173b097753502fd0c0a83c7689980ca0. 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/QZK6K2441062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b4bb4a8321e309198e7462044116fe5e2cf14bf06a90da657dfc645a9e93bb. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:54Z), 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/QZZ782477986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c7df88c4e7600b27ed31832d966145d7d8a54e5c80a06dffb0ea77a39721a5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:21Z), 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/QZZ782477987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aee914361aa85ecd64f08a8a746007c4435a39c2fffa9d3102492f843d93988. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZZ7X2467944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d56b906f23d7fb36d5e5c06a67dcb6e3c7f353053052f7a3c3564b780534e9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:51:14Z), 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/QZFZ42548918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2916f3d360b76fdab3c84555f7af9960cc7c365b3e7b2ac2245bbaf998f6117f. 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/QZFZ42548928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170aebc00a776df88a4ead588aa7f6f9e3a1492896ec12c1730bed00e6f8d78. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHN32576606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a1213a3760a933e05ddd71d1d1d9c8dda0bbecf66858aad12693715c23985d. 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/QZHN32576608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf60b7bede45584ef339a5e6e68996d3e116d9d463e10eaafa76eb70d21e3f5. 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/QZHN32576610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a082fe3cfa482ee8306290c2460c90c089bcfd9a75a7f3b9bb898db1873880. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6F2547114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e0339d62ae27c75bb2d168ad684b974b09646987306d84ecc395d0127ea0e6. 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/QZK6F2547118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc315de39f4e4a180a8676615c9caaf2fa4e781a40cf41835d3db9fc0aee2e170. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6F2547119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65192fb1101f634ee3430a0ffc62a93b86f5e85eaadaeaad1794df4e73ff907f. 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/QZK6F2547120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcca286b466942c41339237a2f38caa479d46287334e06e585c58826d63e0a06. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZK6F2547121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff4e8bfb93fe72c4921ccb500a88aaa97c5bb088c0f14b0068468b342d580f8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6F2547122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7264f1780bcdca86eeb54efa22df80e6bb446b28b2feb504a1bd80d8673751. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2547126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d56ddfda2fd7c044975d11fe1a6ee4512b7956870a5ac3cf68a875f4e6af4c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6F2547127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1ab248ccba110ea4a7749d96207c490a0171d7321d04de5b01b41d220cea2f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:49:48Z), 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/QZK6F2547128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fa35058348191cac0c59277927ce8e8277fe362de43d4a21fc9244e7390757. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZK6F2547129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5c58ec11608ccc2e849c5d441e912862d01490090d183f03bfdb589ab30c40. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6F2547130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec462685afff5e78b331ea0c89733be76dea218db181de186c9944f75ac71db. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:38:47Z), 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/QZK6F2547131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3e4ab773bb23b28f1313fac2046fade6bf742daefdab22b266e63aea9469a8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6F2547132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85f288995c5edd212cf868bc75527255a9bf38e0a457f1f34abb2b5f4fdcaa9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6F2547133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda411c0abee581557bd1c69c178538baeddbb09094de0eb7a1700799291f8e13. 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/QZNWX2548215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca8d2ad5c206aed5928242ff0500ff48ea1f21b845d6d8e2b5aeda8da8334e9. 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/QZNWZ2549763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd618d6f5000943f66343328905305b33ad60b7ee9795cd69317ca7167c4f0a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT4K42527938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3278423e797a98bd38f2b371c0787d40accc4f86d86e594e0af4b407d226dd9c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3EX2571726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81535a19390f2ec8907e09aea883ded18810c091a21102bfa8c14d7a0bb7ef49. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3F72587881.