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 0xc065dba051579c9eca9daa25b25b4f9fe63e476059c57ebcdc94167a4460b5b8. 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/d95ec6f2-0091-40a5-876d-28ec24fa3ab0.json and https://artists.proofprofile.net/proofs/artist/d95ec6f2-0091-40a5-876d-28ec24fa3ab0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Do You Love Me (Di Chiara Brothers Remix)
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 0x857cafe8511e015ee963fad765c06d5e8ef70b8b477abd0dc1e1e9877b06d981. 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/GBLV62411352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114b859ea3cc0d972c23f476947b8f0eb32e9ffdab32f9df8dcb9a0dfc9dfa92. 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/GBLV62411353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6133a0b508610b0db04c6353485f4748b844f17f5df21b8d8f2da3676261595. 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/GBLV62411354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cde0358bd8fca452b9864b4afe51b697a530c9e15f2d6c7091569fbec66f23c. 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/GBLV62408956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46e7daa702677db438fac31bf1c0169080e5d488d95a818fce530f890047e1e. 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/GBLV62408957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fff56e43b9135c6cd1c986245c58446ff8baba90b25b35cf7d403fa1242b51. 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/GB6LY1601453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7627fb0a2f63b019cf93f8dc532b76a38c27055315b0cdea28ec034657a43fdb. 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/GBKQU2413600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070df62c61d5f07bc0f3dd051a5b13fcdeeb6eadfd202d233797bed653f69177. 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/GBKQU2413601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03406da5f03d4053fcdfc8c6d1e313598f0eea9e0e8a24b58a81e42441b34d43. 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/GBKQU2390725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb5b8d1abbc13d32a5722c7ed5283ed4f715ef505dbb0b99cf3f3f083d7c89e. 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/ITA061302309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a9fef1703880ed3d1e58c7b54051d1efb261447b080452a3c08b64249fc2c4. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:31Z), 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/UKR6V2280289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3690f4cb3cf3f2ce98be0e4ef3b842fa041ac84edd4e9dfa1765cb147a88292. 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/CA5KR2183749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3c4d89debc61a9742de495a01583c9d53ac737013d9cf6f6b71d406d02633a. 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/CA5KR2183750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab083b94801d3e52d0de702df8fe38ecf88371fb64c6e87d9779222d88e8468. 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/CA5KR2098783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab6657dab8a45bc8e83adf55f4aceb365ad9c9c5af376f716fc40ee5c3f2ebe. 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/CA5KR2098784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba80cd375de46d73e8815112f3789f65a10ca8fc191a5dcde51a7e15022c26f8. 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/UKR6V2030115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df4eea1f645d4d6f480e14989d94a9e0e5de54d892d6616d03a1b3a3a092236. 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/UKACT1941409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4f015e50eb091aff64940b3f4d167f079d93c23078076c613b6fbdec4f5a34. 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/UKACT1940800.