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 0x1755748d47e233acb46d997213181f893c43ebb47dbe5b4df44d9e15ca9dcc1b. 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/7dfb10da-20b7-4afa-9f10-e054ee846142.json and https://artists.proofprofile.net/proofs/artist/7dfb10da-20b7-4afa-9f10-e054ee846142.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Big In The Game (feat. Snowy and Manga Saint Hilare)
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 0xa797f84de5be7899a39965eaf59988b529358198913dc83c4b0827c9a461a21c. 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/QM4TX2017224.
Everything Is Under Control (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd514216285ac56121150175094a496d11e60cadb7ddceca611bd530e7c7300. 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/US5ED2505862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4338c4174ed48a4a44f5f8493577078c19dfbd09689c3ad5b5b7bdfc8f4344d. 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/US5ED2505882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4342667902d5e74d54b63ab96141b8580e9df6661fb23fdecb6e495a66bfc3f. 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/US5ED2505916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafafbfe05c531ca3404445fd6dfec6f0ed4707a537e6bd46123053f386d43ae. 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/ESA012541120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c479ec9c04e6547633654af9a7f722eadde8bdd32cac62037c1c157452e67d. 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/GB8KE2500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2edaf1fc336f91d5bc4b0cf7afab62fffcfa844b97797349104f9608ea9484. 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/US5ED2406613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fbf8b5cbeba2d62b76cc962711231549cdc8b6a96d5fe683bfbbfdd1e588b8. 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/DGA0M2324522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14df7d4f2d8600b2f26227495fc47699e28eafa51691792ddeee4fbc7f7586c. 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/GB8KE2309774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdc0e6bc7b7253ec1ec4af1a6b11146990b1092bb823584c9a547d9c303a195. 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/US5ED2201855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638ac44ede149e69b0b4e5804dbc2502ac1b3e8ad0265af25e3bd31f234f3d37. 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/US5ED2201667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc6e5b9325535fa7dde903f496ebc94c732b8bdf16422a047dbd523e4651427. 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/UKHAU2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fb118ceafb1ccd3dcf7894b200bb2d4525f5a35a6ea0bc3a80d24350e0431a. 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/UKXN21927130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72019dd6303778faaf932affc7c605368a275f5566e328337fc2f821b2e13a82. 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/GBEXH2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40befdf8de3629a8652f683d2ad445c86a4fae9d63e2610e471b15ac7644e95. 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/FR2X42151432.