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 0xfab9cebf154a7296ce3b2e1539a2769b094081c163baed1095ea3117a8544cd3. 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/5c59140d-bd8c-446e-86b8-dd4ecd7d2f43.json and https://artists.proofprofile.net/proofs/artist/5c59140d-bd8c-446e-86b8-dd4ecd7d2f43.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 0xf86660499c93d25fabdac5d62881ad3db483019af189f48239f591f4fae28123. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZWFE2413029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692646730d5fd91d32606eea2a5e82264b56dd69fb78f6ab65929164f4d760be. 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/QZWFE2413030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67d539bad669a40bd220a41ab360a123ad958a3c653f2d2231c492ac70cfdc5. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZWFE2413031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c659d1d39ffd5314c63fea53331317ecbf0740808f3d726c12852d727dc0e2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:08Z), 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/QZWFE2413032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fc02ee006786c5fbe1dddc56d7b84a3d297f7febd34e318bb028936aec27cf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:34Z), 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/QZWFE2413033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78912eb553e70f8e13aa74532995a8369c504d42775c5dcc4e7f6e7440565e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFE2413034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7993318378df6fced74c4488632a95c0bb5553ef2456dee4dca0b7bdb46c10fe. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFE2413035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07a6998482007b27d07448c2307a84d73e6a70b26aecd42060c2fe80e311dd4. 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/QZWFE2413036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265db2ebb2f7bc22bd47606dc335f00721bbc2a129d08487ce470a3340b429a4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFE2413037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e15edaec4d7d2a3ca82cb2b0da11573278b973e9192fa5fd8a3945c9ae562d9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFE2413038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1183146e07621a9db0ce156e26e8e0068681c0b0b82777363726eb43f3c4e8. 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/QZWFE2413039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe039f21090848c9d50cb8275fb2e68d96392c5af4a6887471dd82328e7890a25. 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/QZWFE2413040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7497b588b3c2a89c04b9a9eb4535d649a3a91811059f66e84c4262da12284c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFE2413041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f67aba16c80155e23bca40d2de0cbf6575a87dd9210f2d43c5ad532a43a0a9. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZWFE2413043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90dfb5d959f1fc39a17e98209e7c0d01962c4066962a6bd0e2b407a90644a2. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZWFE2413044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a4d31a240c0a467efb2d1cd3c239abaccc21a67fe5ef8000bb1569a9a239a0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:30Z), 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/QZWFE2413045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e226eefd591cd53c1c229d478510844c86930bcb8faa74f3d23e98b7495482. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFE2413046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e1be9dae16da5db5b0129d1612ddc3ed282d58ff64250f173bb56b219b7598. 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/QZWFE2413048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebd04147ca3b25852819bc3c3ecfb37e5a8f5dd4d62da0e3cca5e7991393389. 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/QZWFE2413050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae5b231f9332cea37378666fd8735643baba758f44398cb26679e7e607fc5f5. 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/QZWFE2413051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26818277a0e1218aae53196ef044940b455ae838676cc5b0ce2cd8635b0a6757. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:38Z), 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/QZWFE2413052.
There's Nothing Holdin' Me Back - EMOM Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4c6e09f27a0f394309cfa028b6fd342f9dcc2b4680aab36cbd59da5e1afe76. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZWFE2413053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cdcf7b68aca6d7025254064f287cd84bfa69ec2e9ad5126af353c5ba6abbea. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZWFE2413054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb631cdb73d5ceb716846fe8d85879e351a323a010d48275a917b8eaa16bb1ba8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:04:20Z), 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/QZWFE2413055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806c72767886ba48c2c00112e3e6b767b2bd4216e0e90a7d5e5edfcd1b7cd893. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWFE2413057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ebbbe9328f7211e218b09901ace6dbc3327d0499acd240925a7dcbf33d4679. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZWFE2413059.