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 0x079aeb26ff5b1d890e7eaa3836d1611ac6bb461063377a76790d87db29fbb1fa. 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/d4da3b8c-27b2-485f-a82c-fc60b5e18551.json and https://artists.proofprofile.net/proofs/artist/d4da3b8c-27b2-485f-a82c-fc60b5e18551.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 0xe4ab5d40d4c90a5136addae4895c3e61dda5ca650887661e438a0859f1e45291. 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/FR96X1966199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c8d356f1ce630a86d956893aff618d8824d664bca1c4ebcfc9b836c019049. 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/FR96X1966201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb733a43f8a9287c256c57a5b3f1decc14905208dd0155d85da6a01a6758ff26e. 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/FR2X41886650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129f065d731d8b72891407b81fcbb3010fc9975b18cf1346ab9d8008fe29e2af. 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/FR10S1967326.
Rul Solo (Corona Lockdown Uge 1 Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b470ebf71758b6182228f22b2e37186cf94b4d28ff5b2d17f179fa436a62f7. 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/FR59R1703083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485d4b76066ffd033ed909366cd74c3f27dae6fefa923b1d6de3e681913dea7a. 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/FRX452528646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ad96d8ce354f9b8b642bc948a7623cdd9fddc2d6291ce5bcd482210303c738. 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/FRX282569447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e16f2493057faf2a251bdb01e75c4048fc403784374463781301591b264a0da. 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/FRX282590923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145716d5336bf302d5b0eb46f38363bdf125e9c894a6e74d348bd6c250ab034c. 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/FRX202576611.
Du En Lort 2 - Mighty Mala's Hip-Hop Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cb25a91515932aa37b5ed465be7f739884d3502d3bc83a4700f8c32f3b97fe. 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/FRX202576612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa30dc6a948958a8fd46d995990e4a29b9c840688937e4e2893f55813bc6aba8. 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/SE6SA2456703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937873fdb5b62dfadf488748f8746c78aaa331f10aea061d45220af3e852b7aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DK92A1200805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96525e1b23670ae8467b086f51c75608a4458532a0e406d1ccc1c70979bb7d98. 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/DKCC21300510.