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 0xf16d53b6ed2d7447b282a029aa860cbb0a5c6eee70189141e0213a46d6ef4f21. 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/af98b384-ff3b-48ef-89b4-c0ec159bcb35.json and https://artists.proofprofile.net/proofs/artist/af98b384-ff3b-48ef-89b4-c0ec159bcb35.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 0x39e7774c5e4296d2eb9cb415120bc327be42c9c42c451042f17006c99ec525bc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TCADU1859719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bf15ef253f6a22f4b9e5da124e5a1c2620c57b68ae45cbd01b88b58a803640. 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/TCAFO2189524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7da8a190110d654fd78235d410e41b86905da944746b25eb34ca94ca678590. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAEO1973100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34516dbe2144181e1ea1059541ea540074dca457b0ff765fba0bcf83564da185. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAFO2171057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea1fed0e11b6777048aee7fadbc3f27efcfacdbde30d01a454fe584d8ac0d5d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USUM72217978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff5c4836adcbb154f121b9537d5d0f647db8d4a52c316ea45d29c001a872fa9. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/USUM72301830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26098bd0b1c414f6a3d14814b4d74150256f7cfd93413c9d2d788ad3a3bee3f0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USUM72309049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61c6682210c07fe3ff2f7beb328c7fe18065b82a68fe0cde6a5379943dd4078. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USUM72309369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b2cfbf1a8dd9f1761473d087edbd66234c97b9a0675d8098835cc083f486a. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USUM72310982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bd962c17818df7603113eafd5e0f1375559f649dfa26b365a3c6aa0ec16d57. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USUM72313127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd67c3f2b0cd3c12472f750c2ca2aed31f8db57b96b9827708cabbc3384acd7. 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/USUM72317253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1057b3cea41ab7c86dcd31cfc3afeb22be1fb7d3bfc53f865f637cbd33dae7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USUM72406199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb023f284e08c2b9c35ba1a418d1c96818b52e045a27120f74be66fd1eb9d3e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USUM72406201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3026948bfb4cb894b9f608bbb5dcdc409d53692fe45fad93743e64f4b45d221a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USUM72406207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222a156d28a43cd1d70a40523961683fbae6327d37a7a39b094bfe6152b6b383. 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/USUM72312646.
Be Someone: HoUSton Population (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d6be56b2059314d3b717d4cf6e6f9e2bb19351aed8682ae65543a8146bde6. 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/CA5KR2243037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe2723be7f8250fb198d5f51527474c919d923d7e436835977c73a4fda38a85. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CA5KR2299952.