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 0xbaff537c08021bdf6e642a8ce7fb0aefb80fc2661b347211e0083898bde5559b. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29f359ee-3264-425a-8f30-0c756a2f6124.json and https://artists.proofprofile.net/proofs/artist/29f359ee-3264-425a-8f30-0c756a2f6124.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 0xd2f78558c9f7253bfba5aac4c0a168b119feb10620acc3be3b2afdf6011b9610. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:27Z), 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/GBDMT1300938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe802d53f23eb925f7b9ae2bc4e805639668c3dd1f6f2e81bb166862745fcda7e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:34Z), 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/GBDMT1301000.
Say Something (Originally Performed By A Great Big World & Christina Aguilera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180fb31ff3a241b67b789b69d48d184119977f65f8b8f2baf5a9491cdd6b126f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBDMT1400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47990550b674d01a035ed257712a88bf8804fe2ef8dfc11cce7d83dc19caa1cf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBDMT1400519.
The Heart Wants What It Wants (Acoustic)
Killing Me Softly with His Song (Acoustic)
Killing Me Softly with His Song - Acoustic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acc87ae97c6ff33e9663018f5e876d18a99c81795e3cf719e4ece217376ea3f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBDMT1700382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a3a69ede27e3b1253caeff93f6c41b26346b4ba03ea314e4e3bf9e396f3d52. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBDMT1700444.