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 0x67e44e3969e8b91ebf30049e455b955768e13c3f7e4cda45288d74cb472e1ddb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d1c1797-b291-4d1e-b376-083506453759.json and https://artists.proofprofile.net/proofs/artist/5d1c1797-b291-4d1e-b376-083506453759.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 0x6b93cc4e361f83e01f010384384e5b9593f74b8dfcd2996f97fe052930e0db66. 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/FRDX62210360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967594f7362bd6d4aedaf2733b7726552f639e6e6acd3607f8453e3671f21d11. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2407082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec4ac9b9fd06dacb27550b0ef3b90de67a7a08e05632c8bc2d0cd4e793059f4. 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/QT4K32576373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ba68f60f55e1547882ea34c8f8ceb0da992caf1f8cf3a3729a894a5bef1b5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QT4K32576374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70119a8a93ff5e89ef26745ec604d676752f3ee11edca1dceaac2011ee9225fc. 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/QT4K32576375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b93cc4e361f83e01f010384384e5b9593f74b8dfcd2996f97fe052930e0db66. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRDX62210360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9076e07cc45c2f6d738189eacc3cabb1e5f15db32c8c193b60324c58fe9050e1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLV61800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bd09dcef7367c92a1a192713e4daf7a43d4295b5b1fccdeef8e0bed5939964. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRR642401813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f05f3a37eafed42a34a3dd949f9ef3212b6b5f7ce85c354c5a534273a4c035. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642401648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07fc43ed5a8e87f05d747794c4b01cb5f1298ab99535e539311a54efa3e1e98. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642401815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80ecc1339eea7b4726751c49a04e23dab2f192959cd319da181a2729bc11fc. 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/FRR642401810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b462e737deef447d2b1890136f6d87f5a1db1afcbd155ea363dd90ce249eb8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642401818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73364c36a7600d216a163b29a6e12f2ea6e186b7caaf4319bf80b209af00196a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2423627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9966a71de75a7c4cc987250b8721e43c26cb9ae38acb82c8928369d2e8fca66. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEW872004239.
The Reverse - C.A.K.R.A.W.A.L.A. Alam Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd27dcb40beceb4c34511f80152008787eb024d8ac2895060b3cb41cd9da5ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR2X42500990.