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 0xcaa482e9aee4e52ee1822b2d03450a1f39270b645fdc23913f217763e3e9a3c9. 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/516c83e3-1c5e-422d-8709-3990800db752.json and https://artists.proofprofile.net/proofs/artist/516c83e3-1c5e-422d-8709-3990800db752.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 0x09a6cf4d759bc0a7e008a1fef318b44e0100916477a5ce33b7b975812afca361. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITDF62177044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabcbf82784769313b3f2831742161421ecea6c62c9d9f48786fac902a619833. 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/ITDF62177104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b050273f296618e206e2d14eec2b58506d3c34d7b615c85f58f4ff2733d79c4. 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/ITDF62177105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86d5e990f215a706ba65f47169605f890e6087e1032b154a270b8167815d536. 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/ITDF62177106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a12c5d429ab06cc0c7e3f93e7c4ff8a9c9b833fed60fdd1e024f8a519f30b3. 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/ITDF62177107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87ca6725598711b9decdedb38cc33d44776303113ab69bb3ba5499a9737dfd4. 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/ITDF62177108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d238d1cedf3b5a47e5fbb881653a1e16d700cecbed036e92a624b6c3c0a171c. 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/IT7000300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0f0517b0db7053e6ebb1d14fdc16292b066033f9a9bdc57edafc11ab61d451. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM71300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130abcc5c8c3147f07c322a9a86f7201ceca86424a8a2caee56eeb51653e63e6. 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/ITDF61977035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304d079e13d3205fd155a4ca198bb414ebc16680150eb734a1feb6e1489e29b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITDF61977055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507303d934cc0b4acf01fa3be43b0f8c7479d4b77a721838f3bdce9f9c7b4333. 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/ITDF61977057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001a391875765e482835b5850da4109dea19c0633a9589fd31aab89182023a85. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITDF61877068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402b9e50de926c2147e4f0b33e1f02ed29605a52febac4221e1dce9580220a81. 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/ITDF61877069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca92dbe56adc1631b0ef43a3767dffc303401650b3ab6fed727269ef9f72cc6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITDF61877070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dde04c4d0144414240578fac99fc8351f5b7a4778494e980083e856733b7c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITDF61877072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f5d172f1bedb0acc5051f3fe65a86770d474449aff8656e713b812d47ecf3f. 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/ITDF61877075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4289949e533d037998c829528ec818eeb075625a7a030462c2415fa6aef235f6. 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/ITDF61877076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace9a3e25c2d7ebd25984d89ed3fdec5cd3ba800d6d9ae48f020fb46e7a43348. 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/QZAPG1749339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1c702441623662007f63148a93a1c8fc9cdf9b3aa5c83238e8e1b2465c5d01. 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/QZAPG1749341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7628755a834e6923033f3447f53c02a8c003b4e265329078add7876b4301b23. 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/QZAPG1749342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a4e9a9e0ccc307c0699ef23b516f5cbc6a6a8a8cddc582e451711c955a6735. 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/QZAPG1749346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6cf4d759bc0a7e008a1fef318b44e0100916477a5ce33b7b975812afca361. 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/ITDF62177044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130abcc5c8c3147f07c322a9a86f7201ceca86424a8a2caee56eeb51653e63e6. 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/ITDF61977035.