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 0x93c02330102377a0704107306f01c8a7eaac020ef3cd141e68774c2d48571589. 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/02caf2a4-d774-4cf2-a92d-36190e949594.json and https://artists.proofprofile.net/proofs/artist/02caf2a4-d774-4cf2-a92d-36190e949594.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 0x1a2af5332be9cfa77684a035ab5c41ddeb793e5014583c7d57e2489233cce622. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/ESA012280654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749d1e2ac1097c2af246669f3ad27b247cfc98005af7403a9c50ff4a58138518. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:04Z), 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/ESA012280655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd754099822c2ce00e93b0a1b7ca1b04bde3d6d0d0420e7143e7c1bee0195acae. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ESA012280656.
Il était une fois... Les prophètes d'Allah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb952624d198c77e6155fcc9ca769505edb090dc692c9befabba956e4cc5b6d52. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/ESA012280465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8616a72a62dfcf5d90aee846a42bc4039132ff5113dd1807fb9c2dd1cd2251. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ESA012280466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8453d4613b4a5cc745200a6551b82a001d0269ac811497c05b2af35477592351. 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/ESA012280787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a738d978e6f37fbf6536b3786c962355733e3afeeac5511dc44cc3c8bac9518. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA012280788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6d925b9d97b518e7f89cf77976cc8057d017fced54f52186db274d494a126e. 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/ESA012280789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b5b019e6841e913c9fb7d322ed90788e404d4a839670750b2be1b6f042b4ba. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ESA012280673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673c2eef4a562096d73f8ee9ef1c6b03790efd1390c7407ffe069ed5e20c9564. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ESA012280674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b800877fca215697a0e878894ae30f807945eb2988300a9386969f0b02dbf43. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA012280675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21509da7c31add69f8f897eeb8171c4eba70013ea4e86b751785ce9b5df137f0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ESA012280676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c139a743e96baa09db90092ced5247668515b9a8010dc7134c7151aa043490. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:56Z), 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/ESA012280677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ef1c753dc5f2e1cec6a1c1866018f27e94298a8bb00411b2633cb6ecaf42cc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:29:10Z), 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/ESA012281033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040a5b284c1d7c9490065e8e2d0f907b233558ad9d8148b135b415d11e10d744. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ESA012281034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264fe55f9e071985871dd89bae7ae57028ef58914cea1c316dd6dc3db8578ca0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA012281035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b14b37a970f77e91cd4537d62c382357e6657b32507ab155644dfa9f33a367. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ESA012281036.