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 0x07fb5fd8e96bc10430261f994ba4b66309e66a48a85353546aae2de43899e26f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5235f204-9623-4d88-985c-3b7279ad9015.json and https://artists.proofprofile.net/proofs/artist/5235f204-9623-4d88-985c-3b7279ad9015.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 0x9ff936166a80bc10ed860e2f02643ca2f1d21eb21e926025f7c698497890b99b. 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/FR96X2094948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86140665b41643ca992d957e02f38b052b1bdf12b9a0c9cd50d05959bc50b68a. 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/FR96X2094950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1f0c49f19002fe431b1abf362d9321a2765fc116eead4599f7dac1b153376e. 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/FR96X2094951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32911d7c49ed2392e0cd3ac4a2197bcaab08650a75a3ecee887219b7b48b2b2b. 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/FR96X2094952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0f9dffd55359a5d1b3ea56c9e229edd44f0aa70f197d34d27ecd94c30002e5. 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/FR96X2094956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6236e39123cfd2ceb6f3bae221fe34d34380c7fe25be9885e39cf29b8c56d44. 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/FR96X2094958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffa0afcf8321ad343a908ced14af788d0eec11852ae9d1dc5472a257d09b1bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR96X2094961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa488f7cb38448ca93f32297309d183ba776e1e80700f1b7298c405d3acbf3d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2094545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241702ac7b997b865a095223279db52dae09ca0a01c3aed1e5c33c368c499c54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cacc2ab7e95227e166d03160b107883536e41d4d74e3b5ed60ba8b98466e187. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2094548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220a10e16eb94aa2e7fb3247d22a26b2135ab4c1ae88c7003d7e26fd6bdd6f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2094549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fac3c2a4164f88b13f330e22b0f50ef17bf03855d1ed4bf24c4006b3741e54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eaae44711c5eeb059c5aeee11bf023ea15664ef59854c2f49cc768c1eb7ec2. 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/FR96X2094551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943adeb16abea9a56a8240fb55523ff5484ad36d269ccef42515b54cae236bb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daec9dffd3fb7ce9ea1124361e2a48d2dbbb0f32b32153d65b77dc6951dbdc8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d50641a449e902d139cc720cd8ea276da66cd1f3111fd43b4b51b87cad68ebf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2095304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fbd052549edcc5dbb44f66c4636722dd85265d996fbc4d89ccda9c0a5b1558. 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/FR96X2095305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c97fdc1f1dc5788336af612416d81b961c8c7362eb63f3f67a80cff3b0b320. 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/FR96X2095306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e993e2e947f00589e2a4894d55d607fe2028253d58db7d4843a4b9c6d1fca5. 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/FR96X2095307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb703ee9516f3d050e0c01f0ef59685647f4a3803b76857c4ad639c037d92a263. 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/FR96X2095308.