thumb|The Ghost Dance of 1889–1891, depicting the Oglala at Pine Ridge Indian Reservation in South Dakota, by Frederic Remington in 1890 The Ghost Dance (,Edmonds, Randlett. Nusht'uhti?ti? Hasinay: Ca
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 0xd885c3a0edf5bbae63b84bf8a79777554fd4d4e767f1ae5bde1cd13399537009. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a14eaa98-916e-40d0-9a56-1de9bde8e5b8.json and https://artists.proofprofile.net/proofs/artist/a14eaa98-916e-40d0-9a56-1de9bde8e5b8.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 0x890db3a36e2c9ff89c2e26bec4ae53c3bb756afaf8e846ab1ecce90f590ed3da. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR6V81684888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231f8c051708a44ed1916d2318cada6c59e900aaec9525cf62ad3275334a7ae2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR6V81684890.
Stop the World (Deluxe Edition) [2013 Remaster]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc9343e6d83d16b2062bb427ec524a92daf35b2657a4389d5ef7dfdba0cf2a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBAYK1300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0648391244a908098bfb39cd2ee54e3ac93945114bd74a0f6d187bbad945113e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBAYK1300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb991243139a78c4b4a34f8c831cbcd2d8d4d08676e6f8a669bdb06d7a759915e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBAYK1300450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f14f5e2eef94b83100f8861849f1d25845a1ae8d28f19324769a50f67530ea. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBAYK1300452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5739fa7d93733f01707c81c700e3212aab9367d65db27c61dc51069301e2e1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSWE1443143.