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 0xce4630439a9d56692eb09c98f67311751324da101a869141276ab7c2de1317c7. 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/5a19e0c5-da90-4c0f-82b0-c86fe21bba81.json and https://artists.proofprofile.net/proofs/artist/5a19e0c5-da90-4c0f-82b0-c86fe21bba81.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 0xa4514732d0e28ea17803d88a85b63a247f48620895e9926460cbd4569c60fb63. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/GBMA22432712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6be498ba6f6bc4906e8f9fc4fcf19ddd4df3b7afdaa65db8ed2e2bdc0ed21f. 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/GBMA22432713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1ed198872d2a77f1d26c5c8e1db7e312682ae1e09f6686a2a9c1179caa19f2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBMA22432714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0651860d5270796b30812e082b88b8a00dba15e563e3c250a8d6cd55d1458e11. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBMA22432715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd284d0715f0bb655b2ca88b4d5491b95e0f9aecca3c16d612493bfe160d72ec3. 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/GBMA22432716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea28b016b49fe0b6dfb9e5a0729bceed2efdeec21f24c5b25b1291f12e4da932. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBMA22432717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619fd86ec8440845e108ec0c7d910c0b644b432496c09c4fd95460641d78544c. 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/GBMA22432718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d63dde327696f222c6124f66acae0054f2514b7d6fa034a09fad2620dd6070. 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/GBMA22432719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa7c0be7e422e2d1efbb7d93dfd760290ee7c7b5401ab027e581b79073dea0. 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/GBMA22432720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc422a22b408978cd9253d333dbe790bdfb3fd2e75b3079a11d9ad7204ae488c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBMA22432721.
Abo Nokthula (feat. The Exclusive SA, Scotts Maphuma, Kabelo Sings, Bontle Smith, 2woshort & Stompiiey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a59f47cbd5da4f7d1bcb4e90d9f5c0f79b48e1079151d3eb583975858addf4a. 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/ZAA012400339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dc7ec384885ab7b2ec8cf6830598bb98b2bc14e38564b14be01d7fa276187e. 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/SE6XY2566184.