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 0xb44a39189a758a0f61d9b9d0a302b7b7cdb0be5e81932499645b75181d9003b7. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8fa5495-ac17-40fc-a59d-adfc392ec154.json and https://artists.proofprofile.net/proofs/artist/f8fa5495-ac17-40fc-a59d-adfc392ec154.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 0xfd03fc3cc1920fdb109d384de5d3084da420e578b1d23263dc7b33fbdc374071. 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/ARRFR2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b51512368b97538b8ee0c3161e448e31117585553eecbea2c6a7fd5ad779eb5. 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/FRX452076742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4877027e898d36f2a139b00f9493460b9b51e94fcf0c151d3d0fcfec01bc3d92. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARRFR2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69151d7cbef8fa8f21cf985fa889dec55dcfc8041c3ed73133b8bd24dc7a1560. 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/ARRFR2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faed93f9bb8dd50fd58178cf401996c042456bc65bf0b5b46238c09d4b7a195. 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/ARRFR2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98dad50a955e2e5b7b9c52ad8ae1b0b71e828eba45226f9054d18462b3f1c11. 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/ARRFR2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bae0660b2e2ef151e87f3096baed281c34b39ed9c1a55d0c08c076b86d3a613. 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/ARRFR2200004.
You Can Be The One (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30629084d43252245b0fcca0988890c61116724531a67218c3f0b662a9b7ed75. 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/ARRFR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b640531385c91fe2fbd6540e32ade5649081abef600a2268d5542d6c6bd5d72. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/ARRFR2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ba33426c810765d9299bf91c583f2ff1a3b929bbf0859b6fc68dc7c4400746. 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/ARRFR2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fa860502ae3b51b8801f85c7122a2b988f8fe4a45593c56f801b6b7f68adc5. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ARRFR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56011616ed7394aa2c2920010ba91d894aa8df8730c4cebb01b515b08ff9a96c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ARRFR2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ad03141e7b90462d584766e485dbf81fd994cc126b6ed7c0bd80badac766be. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/ARRFR2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dcdc9ff5fce6536d5f18c16a7a32ba36343f16165ac7d2e892ef70ce12c6b5. 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/ARRFR2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6181a8f6ea0c4ced624a733d0a682f74e8a8350991e23638e4aea70917b3ad1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ARRFR2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5980e5b2e4e69c5c14492714d634577efd219cd78f646f029e21cc294beb4917. 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/ARRFR2400009.