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 0x37a4447c4bb14704823fb14fa5ec724de34f75726d3cb9b047860bc47853a55f. 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/2c187e27-0d8a-48bd-97b2-36ec72184429.json and https://artists.proofprofile.net/proofs/artist/2c187e27-0d8a-48bd-97b2-36ec72184429.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 0xf63c2d90a5a0ffd16c68539f85c6ad06c2b2960effd4472732ef716601bf4ed5. 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/DEKF22400215.
Backflips (feat. Abra Cadabra, UZI, Geenaro & Ghana Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7e4ed90bcf8556122d27a0678d4497f2ecc10c25a18320e48701ed4b1e1b80. 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/DEA622300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1daa9ba8a1ac52ca7ccd42543e68cbb2310563dad138fb4c9e75f4c401dd70. 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/DE1BG2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84646bbf4e3b4692148c52038820139f580b9fbedf28784028b694486d792cc2. 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/DE1BG2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329878ce60e80c0d2c8b7c3a882ad88f5adc39eb0daf730127604d11ed188d47. 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/DE1BG2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba05fd6344d9c031d488916af76358b5994ad8472e60058e8b26e9640e7947e. 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/DE1BG2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8359c06f8cdd8822a5f3fd19ecf13a2840dc9e75af84d85fb46d252dea7615c. 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/DE1BG2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4fab9b168fb39fef0005020ad3e2d2ab98bf67bfcb08210fd270a74ed15380. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DE1BG2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0049c489aae8d4f743bb913d592f0898a6a122ccf33d2eaefe3c6b8b034966. 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/DEA622300815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a9b9c8ab7d7bb325dac51f8b2ebd8b045c5f990185bc88f65d0b24280b2c01. 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/DEA622300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189d970f3d08a966cd639a1b4654d54f1c5c5ec13445d5f21aaf70a0c13e9f05. 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/DE1BG2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4fab9b168fb39fef0005020ad3e2d2ab98bf67bfcb08210fd270a74ed15380. 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/DE1BG2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba05fd6344d9c031d488916af76358b5994ad8472e60058e8b26e9640e7947e. 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/DE1BG2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfb4b8d1edb2230d616b7ae2325a263da6ffb57290eeca3f87596541cef6500. 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/DE1BG2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8359c06f8cdd8822a5f3fd19ecf13a2840dc9e75af84d85fb46d252dea7615c. 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/DE1BG2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0ca6b7ffd4d52bf9027615b4f19a8dcb187cbb3958e63670a438417a9e3b62. 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/DE1BG2300044.