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 0xc3a1707244b6cf81272fdb8e359193bbb5897e45df355a84c4128e5a5b3d1e8a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1c78058-00e0-45a0-8225-f6c61fc51d12.json and https://artists.proofprofile.net/proofs/artist/a1c78058-00e0-45a0-8225-f6c61fc51d12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
HO PICCHIATO UN CREEPER X SENTIRE QUALCOSA
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 0xf5d92b4e0cdba75dac1ddbe4b27b428738779e45faa2447dc52e5377601c62ee. 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/IT2J82100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8578cc246fd60af78cd2bfc3a3e2580e0966c56a18d4d85dcacec72dbf1aa38d. 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/IT2J82100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778eef75276c1c70145730a66bbc7a223ed28df0d26558c935c2a95f0e74f0ee. 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/IT2J82100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce6f7fea7cdcdefa0fbd2d0453683063dc6a5a5fc96a54d96ab79ea519f1567. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IT2J82100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2690dbc5025e0021421c529dd1ecda64ae4d73ca3518bfc47fc0660b589b53. 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/IT2J82100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f92a0289dcbc760b2e6d22b7daa3ec35ad7124cf5c183ce24b9da7786d1e43b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IT2J82100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7763bd8d74e7f154086ae4d2fc311defd5414233868f28d57346e65fab54d7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IT2J82100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe22b9767a409155a6fb225785b1aba530f472f10970cdd62cb8e0edf388c5a1. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/IT2J82100012.
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 0x52ee3f9c9407a90b18025b18c9c2a5e5d34ffb2724766901918bb4a0fbf3a3c2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/IT2J82100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbd8e95184ae7de64f4f0077cc2f92fa0716edfefc4e13c487f1b041125d482. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/IT2J82100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0288ebd84dd821d57a64d8d16385e94cee2978cdef5f68ad58ff142d3b5246. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/IT2J82100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ded4db2e277746c3d812a46c0e2ed0b6eb816eccbd9b84ae8b8ab96bc0e1075. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/IT2J82100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a16ab5d998e0039c80f01c0be876f35dce408f025840bc2d24df49f4d5c281. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/IT2J82100024.