Digital usually refers to something using discrete digits, often binary digits. Businesses Digital bank, a form of financial institution Digital Equipment Corporation (DEC) or Digital, a computer com
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 0x54760acd999184bc3b7ac0dc6a49e33b8a0c7ee5f3c9d2cf1873b84547499921. 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/dc91613a-5a68-4a79-97f7-f039aeb79ff8.json and https://artists.proofprofile.net/proofs/artist/dc91613a-5a68-4a79-97f7-f039aeb79ff8.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 0xb16fb0db2e644bde62153505fe3b117528e460a4fa0a6528be709817709af6c3. 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/DEFG81300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973e33fa1fede6d6633b99ab7c1973833d1ac5dde0c3c651bc265b4dbdef349f. 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/DEFG81300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23847375c4c3a09f2d096cb953dbfc5e8fa386ee6f999625c325aaa2b82523a2. 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/USEPW0800588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a919c1cdc430c758253e94fa374f33d3513e6e59494f09c0d1372674addc07. 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/USEPW0800592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478b1861f7f783c029d96abf10ac0e8ed4605e6f74d6f78bb351b42b879dc9c0. 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/USEPW0800596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28581e9eae8583aa30012110525e07d101b3a0749c90b43a6333d0a213ffee01. 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/GBBHF1310726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0cee991b4ea8e7b0c9e0f8b82e00b2669fa924b0d016a0d9e42909503ac536. 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/GBBHF1310727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a838c18d57b7c0433ba7787fa1bc35a05b5a9c810960b46fc77025154adf183. 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/GBBHF1320084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca941c9bac88af3e1d90aa876f18136b537faedb430e4f2a9876839db4999f7e. 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/GBSV52000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca966a8ff59286145da302733ec9b33457354906e7e4885fab915b0c2bed914. 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/GBSV51900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384321412fe2d3f0644f298e7f626d9ec063b6d5cbba83a68c0f3bf4cf4969c0. 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/GBSV51900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334f1178532cb85231518f67fc079c6ab244814ef27a045d68d59f5dfe016737. 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/GB8KE1858102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53db8c073c7b3503a9fdd493373a54303b2a3c0010a7644f79b3de93098908. 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/GBSV51700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b2f813530fb2e9ac711cd748f3d7a7fb5bcdfa95cfad0af4c1af3eeddae9d. 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/GB8KE1650716.