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 0xba15471bc29f192e81ec7745e7ee30db3ed1cd24a93b287009214aaef43cf47e. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a404afb-3afa-432d-a8b7-2a78961d233f.json and https://artists.proofprofile.net/proofs/artist/2a404afb-3afa-432d-a8b7-2a78961d233f.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 0x32c8e8a136bff6b24e515ce8267871d560f082e4c3f9fe90a4348a355db51f76. 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/TCABQ1333146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9277b4b811acbf9dfb2b74dfb4496593354749f77202f261f228da3a9a79fd. 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/TCABQ1333149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda29bb5a4f4a5df5bb49f34455c500479f9da2ac8ae3b6d05eb13b4e4ea27bf. 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/TCABQ1333152.
On My Own (feat. Lataisha Latrelle, Ampichino & Yukmouth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fb398810fc51848942f56ba4e3cb397151e75bafa9b34c0b63019106da2576. 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/TCABQ1333157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4b3923d17720aaf05fc9002cdcca07b8f823c1fb603ddf2190f82bd785e44a. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/TCABQ1333161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1179d99068c85b250724aa76cd31722eee07940a98443bc44a216e225df53e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCABQ1333163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3bdeedadd9a5b0fd5f296d8a832d0ee53c849af6d3ac0f9ac1edbaf5945852. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCABQ1333165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ed5e39a0a3f4cead84771df062629004129c9f4ce713227750329ce158d43d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCABQ1333167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bab9dcccec4dd1bf5a2018b05df9d6f82586e626595fdbf335624439f5af7d. 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/TCABQ1333169.
Paint a Picture (feat. Yab & Showtime Domo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec875228e821c559daeb84d75ba923ca0341c3b608024e961e4a7714910e8e56. 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/TCABQ1333189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faaa620cb2b4455863befb2a6ead96c875c1261f45bf088911ba3e3845423f8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCABQ1333192.
Heart of a King (feat. D Rek, Dreper & Street Knowledge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde013bfdc0eaf300a15e99a0b6469f0914cc6eb7b1c18cd15954b8967b310259. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCABQ1333199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac7340e02f0801c739c3eb23dd76907a5cdcfdff849bcbe123f223f1bbd841d. 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/TCABQ1333202.
Couldn't Believe It (feat. Lil Rue & Sleez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe671ada4ee133523d83995378c5af6ea7634bc29660ee4de06c67d41859dfd69. 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/USUYG1199680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd645c7f0738247e32cc823c32d4fb95dfaecf88b206ccdf446d5afd660d9c97e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USUYG1199696.
Polo (feat. The Jacka & Sirdy Wit The 30)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8429d6a271d774a644b072eca10be7ec563d83686d97f1079fcca66a9b5af8c. 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/USUYG1199505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aae8ff0ae78507b01167b40aa83f5efe4845c848c4181e2d5684c0320c2ccfc. 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/USUYG1199626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3ba9a2e8456dd04bd749089cbe047b2ed4e791f01d9facc3a596cc4284c8d4. 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/USUYG1199629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82df064e6ba9aa15bfb0c06655f5f455465ae56fd7bf8bb9458528153bea00b4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USUYG1199631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd95f45900968be0f84245b0d9bff32db2b10feee9a0889d6f2cda668e4515d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USUYG1199635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcd467b5f02c69cc8801de6963c71cd5cf71d495fb7989abbbce681ce49b3db. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USUYG1199627.
So Many Things (feat. Bo Strangles & Ampichino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d65f68d4e3aee85fbb4f372488bdd35e14017c982cae2fdf2f8f56ad52feaf. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USUYG1199641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301fadab56b7f8054c36086000ec18aaa11abf4a06c572969dc37f2dbfe684ea. 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/USUYG1199633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb23d6837719aa2266c8a0fdfdf7e1f5b600a20f082290efde202e3528dcca7f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USUYG1199639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fd714d4f176da95ea0c192618f5a36ac49ddefcadca772bf18c9ce46db1c33. 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/USUYG1199640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aecbf4513026b29294d94b2993ea87f9a91a629bee09c93334b052892058dae. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USUYG1199642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2a83c1a71a2cd9eb7e8b1740adc9a0ad26e7ac146831ecbda5d376f8851c6d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USUYG1199649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e5634de4a61416f2724d5cb3a85f5bb07d7a1c06f4e4787f3b494628515046. 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/USBAE3360576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32db8e459b40bb03e89588601a969c54c7be68a1d558b5dad1fa6ce4a6f52cb. 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/USBAE1310623.