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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5339e56d3b1d48099f861ede01d62321b1117837b9899ea3d30451e27e7c22. 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/067e379a-7fe5-4a81-a207-ae15682ba1a7.json and https://artists.proofprofile.net/proofs/artist/067e379a-7fe5-4a81-a207-ae15682ba1a7.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f3167be95f6a9387f96824b9356bf6171e9c99e3247c7bb89fa6d9b23dd24a. 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/QZNWW2261424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d03b2dd70484c573fbf1448932bc5888f907f64d6fcd4eb6e55f634ff70fc8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZY992300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06cc70d01f78a27ee34de0be0764a29d988e5030c0df3d7f8cc6ae0fd32d844. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZDA72307658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb044eebb62e69a6c856a31fd19d9add4e02a6d587f753b915923e614fc01c7b5. 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/QZHN72320491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0484a858122c914cf9afcb9482940177f6e05df13ba5497e0a505a1dfee653b5. 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/QZTAY2289859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb8a659116b716c18bd5c06aceff8d633c33390884600664058cd4aec3ca43f. 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/QZHN92348720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06cc70d01f78a27ee34de0be0764a29d988e5030c0df3d7f8cc6ae0fd32d844. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZDA72307658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1d734997fafda1c184c87538cb0edee633636714ff4633aa8d958326921bcb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZNWU2280315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e639fc3698613e548b80a301a6a7934f7a87b8ea4d53aaf3d3ad68d7ed079. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZS7J2330692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb9d8dc04da142e494eab56227a25632eebf00ce7edd3de4aa410661eae89a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMEN2448186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40333fc3ab451dbb881095fb23ab7e43b1bf4e0b5eeff260a71c1878e916cab8. 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/QZWFF2449213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40333fc3ab451dbb881095fb23ab7e43b1bf4e0b5eeff260a71c1878e916cab8. 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/QZWFF2449213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb7621d4a2a8648a7042f1906996e3a60c6c092510f5cbee969fd576b76a168. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZWFJ2465948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4814166fdd173352dc06a38456dded21d292540295805c5177521ae677555571. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZWFJ2465956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36933c8ffb8369557cdba6c30d0d999579c02a729b3ef8827f380f9c8c972c8e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CH7819577569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556957b7e43371035872b4f47e3ae32d2718525f9b24680d4923cc6ee5eb393e. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QZNJV2592555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe6a107e8353b67856e78a3a3c5af6ff609ae7052c9725fe4f1b19a0860dbd1. 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/QZTB42209486.
Jstar Balla & Jayklickin "On The Radar" Freestyle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a57d3dfe8f2b1c48dd6ba71313affe7316b19fcfcec32e6d09b2647ccf0f33. 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/QZFZ42329744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd721cc16439941d073958f8cb5c50db9144e75348197a98b29ac8d9604252bf. 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/QZMHP2330642.