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 0xd09065927138afa0245e7d7c66e91f1434277b2e334b32947791e3a733c51d09. 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/d21c9372-469f-441f-a285-4258fa4d2779.json and https://artists.proofprofile.net/proofs/artist/d21c9372-469f-441f-a285-4258fa4d2779.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 0xec5afec097fbec282e3f0fd86b68ad12d0ad639ce7c8a937a0aeac09f8affe26. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZ6GJ1601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a1f77a8662a7ba95f21173197476e5586faf5b0166accc4f9e930b6e931fd8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:11Z), 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/QZ6GJ1601003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ecc5db2dc4c0b5a6529ed6788095bed3694d1ed6db7e951c8d71bae522f45. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:08:40Z), 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/QZ6GJ1601008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853bb3a5af8965487b2df1f67d59766d8e0b663fa04a904786e04e7d20b3ac40. 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/DER412100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9438a106d544417e7c67d0076d589f5d6144645ad39715e4b3e28ae114be7b2f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DER412100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82936b3b245a6709766c0986a13d46335bb3fc2c6236ccd447e0bbc649addbd3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DER412100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853bb3a5af8965487b2df1f67d59766d8e0b663fa04a904786e04e7d20b3ac40. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:35Z), 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/DER412100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05fb215567997dc21c3e01b6a9ef8cf6d22e8e361f54c293a182ae75a328ead. 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/DER412100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadeb0bc67550ce620e2c850776dac49e7429d67204bcde15698f3e3252768bfe. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:59Z), 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/DER412100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea4193d929bdc1a9300a01863a22e4cfc0ba60b48b6c2a7f68fe7172f5c6e8f. 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/DER412100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a8bac6da94562adcde1887f21f22067c068b20a5c806b95981de3ac43237b7. 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/DER412100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9438a106d544417e7c67d0076d589f5d6144645ad39715e4b3e28ae114be7b2f. 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/DER412100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b750ef985f316f0dbe095d67370297f850e021a6825a4336e180e48214d2db. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:02:30Z), 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/DER412100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b807244bad85a8b86927e39c1631e6f7bbd72c73011dba0ad3e6f62b6d80e7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZAKB2314185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59401475f4e40f43ceed30af3d4f3d234558b093e556a73b51c3d5db80e9b5f4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAKB2338897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8408fcd276279dfe7d7545728188d9ffe85b0bd9ae6cd43a17bf4333d97b107. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2332893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2db22fb484478a543ead46aba1dd03d76a24b1973606ee360d7449941063cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZAKB2338900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60b287d833b6ed6a77246b60eae3c362435044ffc6fdf83858b5e7bf4696f4d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZAKB2323373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c018e66946ac27bbfcd25d3c2d1eb981e0039a3c794b0426d2d22dd816a4f6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZAKB2338903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af433ee5cdb9fb9b43438698f93800ae5f8a008d8afcef4c506d43555142d7d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZAKB2338904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb398947b177a97785687b784acb8928d3dda54945caaa064a220e2895323c70d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZAKB2338906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4cd1a735c6794906585624f2f3dc6e6390f24c434392370e98d16aaa6ae51e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZAKB2338907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37486486c6b16b3cd301cd4170a178b1e1b28c4b4b0c79957eb231e6891db432. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:21:04Z), 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/QZDA72501896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd54e96dbe6ad097149a7bbe055a3669498673c8cdddb13aaef361dd325ee3a2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:46:06Z), 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/QZHNA2508778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5146f64086ee1ec53bb8d11e6f513cff9f8d8165571ec4bf0170008e09afa16e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZES62575677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37486486c6b16b3cd301cd4170a178b1e1b28c4b4b0c79957eb231e6891db432. 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/QZDA72501896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeb201518f4c8f01728a7700acf574d6b912f50c1a8f53f68b23928e79a1178. 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/QZNWQ2592682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5146f64086ee1ec53bb8d11e6f513cff9f8d8165571ec4bf0170008e09afa16e. 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/QZES62575677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd54e96dbe6ad097149a7bbe055a3669498673c8cdddb13aaef361dd325ee3a2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:57Z), 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/QZHNA2508778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291aa25314801075fc70a1635c91189e76aa948f2ae6cdb74f78cb185290528. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBMJG2029368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291aa25314801075fc70a1635c91189e76aa948f2ae6cdb74f78cb185290528. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMJG2029368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c40ed0b777399c6681e1bf23d3881cbf84115f7af4393c52e7259e8a8c44d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DER412200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2d8606c3d7e4e0286600239349f70f4ab5e91a433ef385c4ff0abae04f6dc6. 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/USCGJ2258077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e1afcd2f942f3ecc7699075e6b8b9c59273541afefc8b82c51b6cba38fa73e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF2425198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a620b6fc191ffb4fb35911ebc6b9bc12d41abe54dd38a9d2928e3115e075c4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ8EV2200003.