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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee80cf03a24276b971ada81b8e94877d9e85db3644d327ab98bb18b7b3ed2f3a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cbb08f0-58e0-49fc-9043-08306d65996c.json and https://artists.proofprofile.net/proofs/artist/8cbb08f0-58e0-49fc-9043-08306d65996c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb0dfdc21b6233f42e6897cc92870de72dd3e9d3c22d7e218e50fb9d049382d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZFZ31936058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9a94a53ee149422ac162885c1efb030293fd981ee36edba494d5e346c21d22. 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/QZHN71952674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611c346b289abfed738da38efff310351c14a74583a3890efc00bafa704eedf6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:30Z), 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/CALVP2027061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad425c96a379e3e89c812bcf7680e3cada1c67e2fc02e5c2bea129b930997830. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAENV2063949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe77bf0813022f5eca1e7971dd4ec735e687868202c317e8a0265e017e5df87. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/CAENV2063952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9ea52d37ac1b9fa69473a691df40919a1ef738ce70eed8b7bb58773ac9fdb8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAGOO2042869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883c9c4e62ea1b3d8d473c59e0b2a72b670d7b36e3186049582a1c04023c3c1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAGOO2042870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056b6c634a367ef7fbd0676c1ce38b9310c7a27c00fbfae81778c3a83fea9da0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CAGOO2042872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ce08f7047d19cf82ffc053ef021ef4be3fee4aacf4f69504f9e081b58ceef8. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/CAGOO2042873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b2f06f3f49bf6487052c8e1d1bfd5c94f3a69ba02741b789be4986ff3ce0d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAGOO2096783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1447cd86bd06edbaa2231e4d1fc96abec0b0eb7d0905f827cbc0d7312a0e7d93. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6Q2146170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ee0c7a0946d53ced8d48e0889b2e1f0822aaebc396bf9100eff15ffbdc576. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:16:28Z), 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/QZK6Q2146171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42420d2739c27daf21c1d5c426002c1299d7b0cba404aaaa1680436821c14ad. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFYX2267218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6136f630c6dad9f9aee77c32654baf6053c8c406191f46d86606421b4f3ebe0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:36:34Z), 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/CBEYJ2475208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610750c98b78866a0e002ebc0860a8542e5dbe208701fff12fd5b780400d2a10. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:31Z), 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/CBEYJ2475253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d545abf191cb9d126fbfc38fb4289176df1f6b9d1d8fbb8b986dbc59a532062. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CBEYJ2475265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff8900f6d3dec038685a571b05e27954e45ae89eb747872d91a92924ffe2ad. 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/CACWV2537122.