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 0xf23dd92a2ce957b3e9a2fa93ce518e57d23720b3e6b60e3db7ada358c67034e9. 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/cbd97b14-6381-4526-a1d6-69ffdbacf6fd.json and https://artists.proofprofile.net/proofs/artist/cbd97b14-6381-4526-a1d6-69ffdbacf6fd.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 0xac1b21dd6984dd1e26c24a9a939e62ccd9624fd3a719634927cb9a5d568a0651. 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/USCGH1499342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb1790c65af8870a2788d0da2a69eea43b5ad8f77225f98e1f1a9f447ab7c3b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH1499343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40976fd75f1c1ac430786ce003ee15af0afaf4e83a1a3f4cd722a1a7a9362e6a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCGH1499344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa602445f98cbb6ee2f17a0fee577fa372700c07a408bedb1060e47d8d26197f3. 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/USCGH1499345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159655b69b51b8bbbb7ef5873cb254ebe83ffdb3899c256fc9e8c3835812a649. 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/USCGH1499346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe2d20e8a62c8415eef67f6a54a28f3cd4f3f7b2e135a0c0c1278b5fd44396. 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/USCGH1499348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbab5fa972130a93d154ff4158f243edf4591bac3b5de099b32e8d933bcbf21. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/USCGH1499349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7fc95bd8fce1afe8a11b838f1329a05a68a9aa963c5d27dd606bb45ee466a0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH1499350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9b17c2282e752a567e3f9d2fae92bde3b40bbcd0c82c7d8e86151a341f555. 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/USCGH1499351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241afb5e91775d7735f7266396f786ded3edf7b6f30640965e14fca49a3c1d2d. 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/USCGH1499352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542671943e8e09f9c984f3a8a095c2839ff1bf506bd7cc0422d1ecadc299c4ce. 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/USCGH1499353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fea802a798bc0062a8151aa0f9686ae62a7021166a8ecb2d6c22a22c954d4ca. 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/USCGH1499354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0d3f19932e88716304b2d65b9a04087fa87f2c586c50f47d42f27fee84fa64. 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/USCGH1499355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef456be2d7c09157658e35c89a1ebedc79b863b636d2d3798436b80c3f588e2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USHM91420241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34e140b09bb5ec3081306e1dbd6924c056e8ff1fdfef4d43e807ec0dfd0b5b1. 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/USCGJ1529546.
Speaking My Language (feat. Mike Teezy & Just Nate)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f210c2590a8b622f2876ec6f51c3dd93c77d03aff99fb1b5910e3466d8253. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USCGJ1529547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7522721a5ecf5211d7b28e8e5de0e8eb1da8229929e97d536c41d7681d4016f4. 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/USCGJ1529548.
Lord Help Me (feat. Kid Prince & Music-Al)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2211e8800de1ba538510ef4b99e06cbac8b8ec211b14d132c871e4a14c9ae65b. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USCGJ1529549.
One Way (feat. Music-Al, Allette & Matthew South)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f266c5052e3544866b2fdd1234ba0ecdd250205a7a26393268dd884c80d81b1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGJ1529550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104b9cc5b70faf1dd69e99bee1cf9bcf8f6d19eb2bae01f1b3d99731177d5ec5. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T05:20:29Z), 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/USHM21661714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4204e6a1633d561393afa14a06b9384e3af083302d46876f0addc8d7bc1e37f. 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/USHM21661715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2290a08af19d4429cb455a96156c3d84c6a8052c8807d7037c64f251f4c089. 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/USHM21661717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee923f4bb31565ebc606a59592e5adb80de34b0d26026857f55817efff001b98. 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/USHM21661719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8082ef12768ace9a57c4c032a0eba0c826c2e836e75e34bb8d13c88495fe5cb. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USHM21661722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ea1360bef8558211f30f83bf4744ddcbde138f0e48922323f29168948935af. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USDY41865694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1dceaa1db1a85dbe10de07c42bc44e92c6b96a70d8053dcf09cda9b15b1109. 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/USDY41865696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2b2b0cb7af85d2c1d037e1508933eaf39b2a7242931b2a520467be3fb483f4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USCGH2063339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39983fffcd048d646c44cea6833d8b9406ce2aaa0b5244c3b8357d7a61349c9. 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/USCGJ2096235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107fb71995278528d59037bd16b4e9ca86f150944b748d5e1284c987e53d63c5. 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/USHM82148227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cab70920caf7871f0474cd5a9bd7caf78f47622c2e1e7e33980617b047318d. 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/USHM92198183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c915340fd15d0fdebb38c63b870e87b4cec4701f8c7628fc35abf9866dcf828. 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/USDY42229341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a22321357e34021eff13d27dca773e8a371ec3e39087c48936672f84181ff5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZEQU2301181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3659e1576cfff6312d59090c4d271b287c7ad3a9ef7b5bb99ba25b7ee7aceae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM24S2405944.