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 0xc0a8869e2ab0e91f2e8aa5771efc2313d1fb6d28c8023d5345cb10da3d486c70. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba94b92a-212d-40d9-82ba-988f7c8d5b4a.json and https://artists.proofprofile.net/proofs/artist/ba94b92a-212d-40d9-82ba-988f7c8d5b4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Miles Davis And Milt Jackson Quintet/Sextet
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 0xa0be131f3d4a0a9eb3e5c512e131e6d2f2df758578cda36da0b12686afed449c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USFI85500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb963ac91dfb1358da54fe85ad985d27148f46c8c5a2e15d4b8fe9f56ce2d627. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USFI85500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb724799fff94d5d0a25493268076ae7feb957cd6e59950759cc01c1e57cf637. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USFI85500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61218a772149f56607950cd66376d8680c2054f22dd57ebf3a770be2d9bd29c7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USFI85500035.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Chronicles - The Complete Prestige Recordings 1951-1956
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7c2e2c3161e7098d0a377bc9d298a1b0d77ea5f5dae9dcbb79fd6ed1c38ccc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182adc87d20fa28c830a3130b05a71c9e6c48970523f94ca3a64f02eb94ccd3f. 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/USFI85600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df1001b92116ec65a1f5f0dba528cb88484a4600020cc607f58410bb2271f38. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI85500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c076515451b392621e4fa044a4be80e6e34c14cd92aeae4036e1b0f9131f3d7. 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/USFI85600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8332f8ea5159142908ae7f3e67cfd2a31aae31627ed3407bd64bcd5147052f6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b963637b13bda2e9333e17b34912924036d9cacf3276f146efb4eec31711de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08e799ef90102937f2bcbc115c58aed9b85041f1615115ba0e5cc9b7fc0493. 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/USFI85100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b59b3205358a4e1036757fa3e3444d979d3ee6db5ac132bbc945d7eeeec970b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI85600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5688e068fb76a2d72b6763ddbcd182c91eedb1184de086b39777be22906d5b0c. 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/USFI85400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f0cbc1615f880cd20dc8e7fa5196208a58435028bf988c7b4ea1fc3de9161d. 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/USFI85500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda90cf5b547a63b61b4824449be7273527c3967099b065b2cc816a5c5e8b484c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI85100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36e1d73f58e381667601a6efdccb0eae6f55b31e5b9e7fab1149c85e59046a9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5019995d08ef5c94500c05053c11c8aa0ce3b192afa8092c2954f43419c39292. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9b90a9e389c2aaa795b456ecb12ef66a08086a8398ad3c7dec6fdb8d399137. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI85100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62d2d31b1629679a8aa6dc85be2a20b7683d6653137fabd3d1378af45b2faa8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aa33463efad8475fc4794cbea2e1e915d28cb1959bc0118a90e4eba437aaae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI85100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab4edade50c397f735a4684e0114bd6cc0a2ee10d0003d7a904177c44ad0509. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e8c3a693ee303c4fef00ba3066814a49170369b6c2e5ba188db5c3fbf56303. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcba0626d77377e057ce95f20d70a81c19e9f9e0fc166208ed7028bc828ee17. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3ddbd743c5a468ed27f8257f84f6d393a115a40246d3b0d1da13150f4c36cd. 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/USFI85400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8049ccdb20e614a85f88b1edd2012dbcd7b82a231c7c39d2db08127180882e88. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7e782aa18762e442d08f954322ff6e2b7aeb187f95fea2008c24ec48ebc726. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7712b250d85bd11adaf8c5ee3666f3ab32336fcfdb989987ea87c254e37ac80. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USFI85100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379340e0e073cf7c6239758ebae0b90984234d3312b2a422963d5498f8741ea9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFI85400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7712b250d85bd11adaf8c5ee3666f3ab32336fcfdb989987ea87c254e37ac80. 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/USFI85100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df1001b92116ec65a1f5f0dba528cb88484a4600020cc607f58410bb2271f38. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USFI85500023.