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 0xdbc0d5fe104df3e01ba9d9ec771b7ad491e91986ff0b2658ab45bee5eb781e6d. 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/ac4f7333-f126-431f-861b-faf0fbd19750.json and https://artists.proofprofile.net/proofs/artist/ac4f7333-f126-431f-861b-faf0fbd19750.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 0x5336eb95790a93fbf93582b30caee5755728d9e4943c94563c004c31b73842ab. 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/GBCFC9900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24b5702e1148b4c5e2201ea21efbba6fb8e5ba6c966992547e6fcb88a43d11f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBCFC9900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5311d1e5fda877ed6434c48610527174ed4c10f5fb714bb07ca1c0a08c2c54d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBCFC9900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b3e4face10dddfc82b4600a23bdd5694eb3dbdc4ad517179a95304a53a099d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBCFC9900001.
Jacques Your Body (Make Me Sweat) - Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283ed1ee5aa5f8c577fe23b94c185114932912d663141a784b3494afa24714c8. 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/GBCEN0500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5336eb95790a93fbf93582b30caee5755728d9e4943c94563c004c31b73842ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCFC9900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33be457a50aca5e1deac7e76efb082a6d5de8d64901955a3a4f3e7169cf17bab. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GBCFC9900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5680d068a179a8ace756d3bc0394d148b1d7746eafaafeef0c96ec7d5ca4719b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBCFC9900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a678fb600251df4e9c716631dbe58e40a4633e4014b3b69c24fe2c226fcfb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBCFC9900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a8d69ed9cddb8d4545cd1956d5e75832e6e2ffb5fcdae66d68e1e79a70e5f4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBCFC9900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84a837513f91da1778f46c6ef656e6a8126e77872fba38c1072d4f9d83a108c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBCFC9900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93ac767ac76e799c6b1b227d27e5b17030e2bbd5294b4a28e0c4cb055177aae. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBCFC9900010.
(Hey You) What's That Sound (ft. Les Rythmes Digitales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ca850f90be227814afb18160b608add4870188b848972eefdb34156cdbfcac. 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/GBENL2403921.
Jacques Your Body (Make Me Sweat) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b883cb1744660c490e5c3cd26746759ad99ffab9aae64cb62d359dec27604ee. 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/GBCEN0500050.
Formica Blues (25th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a00decc8313fa66d71f8e1f8d7ce612f91a52dee7f904d03f63f2026649f5b. 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/GBBND9700090.
Pure Morning - Les Rythmes Digitales Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac66d4961f24333a41b3ac06c5ae28cca8135c805ec862713d22cb5f17a85ad7. 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/GBAAA9820603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c13c4e4a82cbf3407d17c3c2b29c8a91b7e6ef9fb758ca438562e59aa3229f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMSDU1300352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c13c4e4a82cbf3407d17c3c2b29c8a91b7e6ef9fb758ca438562e59aa3229f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMSDU1300352.