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 0x7d4c843e918a3048b1bf54bef719fd25ce8bb77c39c0f56fe923ed4cbb15699d. 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/32796cac-0a35-42a5-aa13-89bf56b362bb.json and https://artists.proofprofile.net/proofs/artist/32796cac-0a35-42a5-aa13-89bf56b362bb.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 0x49a1e860a099a39c58e41aa219995d249c26ce319be6d25a963efebdb8694c62. 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/TCABN1388918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a3fc519529b8c6d068e5c44eb76c8d13a0d56e6e454dac0f3cc07b33f8fc03. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCABN1388946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ae96990b768a2a6bfe919a84281ed5a57778b056351cb1aa80d18bbefe78eb. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCABN1388952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbfdf349ef46af4126efb7fac3ae3e1dda103dd69247f0f21bff52ba408bf67. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCACG1505714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367120d17b67e9abd833232c83d0933c02d641c805396287529096a106611671. 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/QZ5Y31800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8659810079da7aa94726eddce365c2777c02de358c3de08e0aadd9155ff476f3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMEU32203825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e37df8468662f862eaa68e389ce10bba50bd9588b2c399e107b9211883426e4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QMEU32203826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a191489c2d41614ab014cacfae926b21fc7cf092b51a947451e6fe4330fbbf. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QMEU32203831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44034161b931f934fac1e0c4675ec72ce59cc9833a0ecaf06e4d56e556f1798. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHG2373147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40c1c6c19bcb64ad68b78a8b2b75ee1f3d5d9451e2b7a8f0ab410280262a10. 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/QMEU32414822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c40e84897f11c207f5eb41b09fe62760c80a4e4f1723d285aba21b82516b04. 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/QMEU32414823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab2beee059eb30bc2f76092d2a131f86268a4b40493d4f90eff09eeece90c57. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMEU32414824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb8a2ac877f90271a0fddea4f114e3a0cd43d33d015eaf8a0b05f3bd94824e8. 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/QMEU32414825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e80da6bb8b33817afab62aff144bd08bc4be532bfb4d047ae3cf6f9ab19568. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QMEU32414826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f001df1d4045611c2a7ee7d699a49208b719108fa92073a430e1658d16628. 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/QMEU32414827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7565735af0a82856585daf0cef765e72873797b662c7d6619e76c9dc0d92762. 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/QMEU32414828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764c4a37d3535978bc18f7253a03939230793118a226ebe3525a60a2f164b31c. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QMEU32414829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d861ca03084749df5ddffb5150c29af8c22fc829074c86c390a434453f9b3d6. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QMEU32414830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb13493acb6f244f068fec147751cb1bcc47aeb760612ab3882aed6de32059ec. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QMEU32414831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754573e9a8fe2ebd50b9bc7edd24e080cd3e13232e89f6c775d9b2c89c5c86e8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMCLP1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84110c2de8d1a1960ec98f1ba1b08d608297129be84eeff56bc25603d1bb384. 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/QZ5Y31600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f21bf3c072f4d6c7ad1ffe801e75d1a725c49b04738a23b3b28d4a747079595. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ5Y31600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd99bd23ae36490db43f0ed488293da35a5930714df85c8aa832cccb3b99b44c. 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/QZ5Y31600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5db359d2cc09ac1d10ae79975dd3686d4c022cc85d1f9511815e0f29bd99e74. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ5Y31600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bbbb2201b9cd851078e064746b7a3470e7b2faf180b2c1257a26360d380cff. 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/QZ5Y31600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7773c1b5b2a0865bc12a1d07257e7b1dc4262f66841e5be28a7e9262b8b8d73c. 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/QZ5Y31600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0015275c7c4808c195a64f0375f8998c1c4475dd37059c226a4fd43efc1ac797. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZ5Y31600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35885b690047365cf26cebe3e4318e0adca878ac732ec0b803b9fe4502ae9994. 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/QZ5Y31600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e40cf8346e86250f0f0493599fda9dc7ea9f1130fb3672953882c3cbd3ad89. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZ5Y31600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b073941e481c8c0ab2a6e567ba825976551e583f19821cd2fdc7d9d0c5786d5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZ5Y31600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adc87a682dae5d06e6e8d7a9aa20e4642f8dbc849df1ecfccbd83b38381718e. 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/QZ5Y31600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504f7037e58020cc3aacdb09755c7c4d3a899525fe40bf6da4221fe8ca0c2433. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZ5Y31600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a1922fea079e89a9a4ba6efba9dac03d4e6dba4807d9425c98b2ab7d822f9. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZ5Y31600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937f406e6ec3fc5a82df694eeece2a9ffc0da19a7333c6698faba47ab0be3b38. 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/QZ5Y31600024.
Grandpa (Tell Me ‘Bout The Good Old Days) [feat. Courtney Patton]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c3d80ec9653be1c34b33810b97a5d29ae765abd6583072f3a499414668ef90. 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/US4AB2300015.
The Years: A Musicfest Tribute to Cody Canada and the Music of Cross Canadian Ragweed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acfdd3d0cafb572e44f06a34141878d29b998d778b78facf4da03dff14f996d. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QMKJV2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b036f8e9f5e559d3f515564cf15e24a0dfaa36e752cdd80e4676e73fa8fc3d. 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/US2762405114.