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 0xe42c9cc461bcbf452438b6eaf9e53b0b71ac57ab8eaf601ab1a3ee994845a3fc. 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/9e012237-c36b-4ce7-8e47-6afa32a5992b.json and https://artists.proofprofile.net/proofs/artist/9e012237-c36b-4ce7-8e47-6afa32a5992b.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 0xeea356021683ad4d2865d056af07a4ec98dd8bb0d8ef5ff8b2d7e8e8af0253bf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB2LD1700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101433756ddab1751a87b71e8660b5c95be32576446be6d135aaf191f156be01. 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/BE4HK1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc5b3eab83cd6fdc603cf87f68d22b5b24f71d413d7c7861dade32eb100a1d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BE4HK1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c44e19830e191405eb5440171f0bb6cad701a0f7b52a4d136b7e1d7c33eb5a. 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/GBSMU5619022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a857d93b52722173a434c6a20fb392853c0a6aae7126db6692d9f95d08833ea. 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/USLZJ1693383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9967243cf99a04cdc8ffad5e9fa680faf427119c08d73964e3611b27248ae6. 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/GBKQU1725143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ef93ca02f7657a99f490f2918b3829f182dcbb9d423618c1a91e09d7459f75. 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/TCACT1626796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f50a3e4df10ddfe6c9a07214de852c52a55df9d9b641888d4c51fee652a59f. 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/GBKQU1555255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d60bf9d6d75968d8629847c69e13363e57e137b6b62efb19bb1a5443989627. 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/GB2LD0901955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd9a6494c3db95c64f7dca6357cb6492e43898e51207fae9b276598ec10c40a. 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/GBLV61409156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa5773c72d981020e30b11b42ab1390211e1e107f7fecd53f8b942d402a52f4. 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/GBLV61409157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952640e57ed7fe9a2d0f299a556c2fb9e99560e24d366d555bece9958db46b4b. 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/GBLV61409158.
All I Want For Christmas Is Bass 2014 - 2015 (Best of EDM: Dubstep, Drumstep, Dnb, Electro, Trap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa143eea131978c82686b37ad09971456aafe3b92ec26356a9d6a09fbb7ff62ca. 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/GBKQU1482371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510270394c806c8df065e64b324d86cdd51ed3b6bf7451dc04145707f15bf40c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB2LD0901585.