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 0x6fad5a91ac4ce17bc4f9bc62ad695d575d6e41c0d36229e7ba989356c41faf48. 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/7e2e81d2-7838-4d59-b5c3-7b3317266a2a.json and https://artists.proofprofile.net/proofs/artist/7e2e81d2-7838-4d59-b5c3-7b3317266a2a.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 0x5813f5df083854d0a73c0d3e9743b0803ca2eeb292b1478a2dc4c06cde11ad7d. 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/QZNWW2021643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dcad81dc882752cd5780a5a1cf9a192fc4731f4cf945b6668763c24a3b2683. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZNWW2021644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f40c5a7457bd8afd344c9824872ef6dc6100c9ff8b03062677484b6f6b464d5. 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/QZNWW2021647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5923bb44f98119756607df2ed6ac5821a279cd514a9ac735fc7e3e1674581bf5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:51:31Z), 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/QZNWW2021648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d49a3c7a450f64a48f0606d235e255f7af80441c8dcc280a0f7b2560c15777. 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/QZNWW2021649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f72de3f9f1fe2d3f3e85d8f3401b89cb5b0d2c093e01617b3b41cb5e07964d. 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/QZNWW2021651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e88f8b6fea888be58ddacad7070692b88ca914adfe1afb7ec9039f5c42a8aa. 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/QZNWW2021652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde02fcce79f6b2e7a7e01fbd34ed134ea06205c0e86f8addeab3f5e87c1ef501. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWW2021653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dca1f76992e0da48abf38f01bb85210c8019a27a190686d6f1c68a7f931b37. 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/QZFZ52109990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ef86bd5016c85a6f8bb7f2277cccc310524431b3ebb2f5e49b3416f6ecda3. 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/QZFZ32268721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cf8c91ce651b4e0e873fe0a68fa3c416a3b572ea1f2e9ffff24eea8d8435b6. 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/QZFZ32268722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17064b2888897ddde082171f6d8cb72036b17b49b926818fd0c040bd24a0a7fd. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZFZ32268724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f9a6197ed46ec3b4b327a8fc010ccad4f8fe179d98c7be751466c5ed98a05. 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/QZFZ32268725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29028500023de31555e8f375597c593e63932aa15ec86eb402443a594168836. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZFZ32268726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c0868bb86b9402916e7c306eabe0223aa8032194190ddffc93f90032ff3b79. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZFZ32268728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060bb001eb03f9dc765814c2c7c6b994d2ea4e550cf898a3b5c6fbe341edb713. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZFZ32268731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934a46b62ead592fb34541540384e9af062685aebf5b2afcc7b72f19b2cd8c9a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZFZ32268732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1e4143213eaf599b81827bed6788ad23f5aaedd736e2677e2b2a62e8fe04a8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:10:53Z), 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/QZFZ32268733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce81ca43691c7609c2b9fe82f0427b10ce596fcfabcfa02ef95e10255b2c39ef. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ32268734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247879b28dc543e14a70b772119752a4a442aa3efdc7489b6987ce2589497946. 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/QZTB22297574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf6b2ea07d1f909a316e198bdd6bed02e5455fc1b8d62b6fe77da1cf8aaa19b. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:25:48Z), 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/QZTB22297575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e216458c8048b0853ae8a3abf5b79362ac86b377c98ef04bd275dfff6b0a8a. 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/QZTB22297576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc832ffeba83a87a1d1e1e95d9fa76d217a6acda10f5f02eb368e8841a854ef5d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB22297579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5851419fd7bf22a80fd264faa0d30923dc925af66b66e21382f4e327fec4e6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:50Z), 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/QZTB22297580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe854aa3a0d568fa1cdd604ffd96e8ba2113efdfb22701e1dfbe4aeeb7f4fff01. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTB22297581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070146e1ec5c424f3cbe040d67cea5378c959f876f57526e1093f47d9a336826. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:22Z), 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/QZTB22297582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8df59ee28a474e66ad64776b19193548eb977a2fe54c4fc7b7ad38652c0df. 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/QZTB22297583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fbafa231a32053fea67e22e41dd6fc2afa5b96925ef634996c29563d601624. 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/QZTB22297584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8fe20848979b4b602bd242d93fbd685b9536b4d5f07435936df14534ea9bf7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB22297586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc6cf74ec5019711c646031d8d8eb7f768ba755d6e91365e0922d62b606aee8. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZTB22297587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08193954e57694db723d9e62eb0b3f0f910f08d88e06446111a6f82a8542ac5f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB22297588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cd0f9a6121b0f7407f21eac3c56b81b62c7be5dec3220c748c5e45fe7f7965. 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/QZTB22297589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeded257dbbed1a5ef23ec62723f1bdb32976226845f3863a37fbfa49b107ff68. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:24:49Z), 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/DGA082295721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6cb368d9413938785b4492111c059a5afd0d96d834c816183082b2ce4d945a. 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/DGA082295722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134f71cfd5ef5c5f396e5ac4dc13005392f57ba13a560987606920286b42d4fc. 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/DGA082295724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aebf634ffcca52a9fb4580249fda1459a854334c76b3277e68795b9e29ca55. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DGA082295726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83646bce90b0cc5041be5951a19dae0bb04fd842090929381addfe64f874ac43. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:31Z), 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/BGAAX2500030.