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 0xa0354bcb88c9b286e90e4853262bd73841eac49cef06275cd3920cf27224c79d. 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/3b62c930-ef1d-41e1-81ea-8ef2ce889bc5.json and https://artists.proofprofile.net/proofs/artist/3b62c930-ef1d-41e1-81ea-8ef2ce889bc5.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 0x6a2631f7343e4095de70b2097031214c770397e290c09db268d9a0fe63c35f85. 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/FRX201785658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2dab4f7a2d740f65e36e89d1395299c3758adbd5fb04608f6b8cbd475dcff8. 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/DEP999200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cfe57e11d4cbb8d886d9c5a1eacbef64847de11bb9a49f7d2275d71a2d6237. 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/DEP999200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436571d3e78abdaf985c5b02d6a312fcce596ca739082e5616ee695fb5f0f6ae. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/DEP999300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05750ec149672457b8f1c4f1c0af669c062f33561ba7baf8bff3b1b27733592. 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/DEP999300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a577cb91a8e3737ae5c23fab76a001d80dcc6d22cceef07eaed991abfd22cf6. 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/DEP999300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc231c0d4036cc9b61e5ef0d01ce6547ebf0564223b83114b005db99dffbe17f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEP999300046.
Living Without Your Love - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5557259a8f5d4ff6dd57d7f3cc0cdc830eae8687c46f46d54ea0be8eadb21f5. 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/DEP999500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f2e478b9489da5abc6f98cc8f4aa9aee307e9f05de015b15f15911ee119b96. 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/DEP999500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3da0b9a1c7e005ec2c7279980a925ba5038af849a8ce41a740b8eefa4cf4d2. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/DEP999500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcfad8d633196f6e04afb015cbee3c13384dfcf060f6eef24b310e4d8ccfe71. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEP999400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996e596cb8814f03b4a12f1d07834a4f20c2c117d46c744283de9ac09a2c94ea. 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/DEP992300004.
The Sun Always Shines On TV - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eca7dfaa002f54fa2a5edc5aa529c2d6670d174d4f4f4f6b3c856343e2d1ff9. 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/DEP999600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc97157712f058c470a3e6731ba3c8bf154f807ff9821811d13a2d8d1c599f5. 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/DEP990200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9ebf97544ab5378ef39706852c71bcad423f324134b8b535bba6b920206654. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEP990200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d548ee555aa6c8a33ed90db7bf915149741a4b90cf49a4c83036a06dab41e4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEP992300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e539418eaef06280afcabc1cd85964b5ea7a3d8b34863cf3b4c8d6e2c50990d. 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/DEP999100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436571d3e78abdaf985c5b02d6a312fcce596ca739082e5616ee695fb5f0f6ae. 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/DEP999300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b073b27b7c7be610bad6d04cecbf5e11b0262ae4e9187d00d5f768af9c02f1. 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/DEP999000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebcc04290e3ff5de03376494d5579f56a38052f7a20cdd542eb28a14da0802d. 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/DEMA61902360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828be51db0484c82a302ab46f14130c12107bf4ccbfd8e797ede8ad22965061. 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/DEMA61903830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005b81617f1ffc1a36f3518e9a6ceeca0f6a90eeadd1f0bcf5d74a493873ad53. 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/DEMA61904290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6ec515b1855bd45432902236c5d1a667db2d52be0db993eb9583c06fb9abef. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEMA61906804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aa81361b6af6c9a1f796c0665ef5cebc9e92c2d114ba50512e4db5c9887f6c. 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/NLD682500426.