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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 0x687c871721473445e3e9efbf5e69a8e8386be139d87195ed3fdea6f0b743a832. 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/3d2fa57a-5e42-4dd5-a5ac-0a5d2832df32.json and https://artists.proofprofile.net/proofs/artist/3d2fa57a-5e42-4dd5-a5ac-0a5d2832df32.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 0xc2a71198e6f0c8c6443ddac1a1e2acec2252959626972627aa23a86ed2c4e78b. 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/CA6D21900283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58412aa19439e921dfad7f4322477152e0da2d15bbc88ed2735b4cbd73ec1a9f. 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/GBKQU1141585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cfd934aff9e48be19983162fee61b40f6d8865d77ddd0ad3b2352e126bda0b. 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/GBKQU1141586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309cf77daece5e5354bc6e3ebb2c883bb48a33d518aedc40645362be1659e3ae. 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/GB8KE1101261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee96d6a2e186c9c93c2e1a2e41b12caaaa499780ec1ba9d97926de4e207faafd. 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/GB8KE1101262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd31914c9aa3e88e965abbb1447cc82d6a4567cb5ab285301f9e4fc2ebc27558. 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/GB8KE1101263.
Rocket League: Sideswipe (Original Soundtrack), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f9591a52dbd2570cfc365d35ddf1bd4090f72f14bcabab3afe5af23fc45c73. 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/CA6D22100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35f817f5b28779a36d6c41bbd9d4d40b72a459e5f427a6dafb424a8339d1262. 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/GBKQU1344414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4082ad4f354a5ff3ae2554d9316d621bab31935bfa6bef0455e83eb05d87b76. 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/TCABL1374334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f3476f3528d5ef8a0c1005185269842c8f30fca7a80e6b762093bd05ead40. 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/CA6D21800383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4082ad4f354a5ff3ae2554d9316d621bab31935bfa6bef0455e83eb05d87b76. 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/TCABL1374334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df9aeacfd40f8797eb6c3c89353f7d4fe341cad01a37d0ca6bd612cf8f0c59c. 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/TCABB1189203.