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 0x2e0c179a5613410e72588cf7227c62cf6ba537acb6f880ab53035e8ffeeefd1b. 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/c6f4eda0-e47f-4273-9008-17ddb6675561.json and https://artists.proofprofile.net/proofs/artist/c6f4eda0-e47f-4273-9008-17ddb6675561.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 0xcd85e0e41e9a4ef8c3f58b24dd4616254e3e01a89f099d7f16bdfc6e41d26787. 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/TCAIB2471767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf713eb5755a360feecb69c879fcc616c6d6a9cce2fb1703ff9f9c8698cbd6e4. 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/TCAIB2471884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ec810af053e8cf08ec9d4276037ff5636a23950c80382bf6f5a1266a7cb63e. 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/TCAHY2410396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a0c6e23625f444a3e744544b3d969cfe971dfc1a2e3336d627555c1b417ecf. 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/TCAGZ2312088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36659161891bf1eaad19089d7976c76cbab2bca5f79213d3cdb411ec02677d6. 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/KRA532100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965bc0a0d913f3a5291df7b5f60025b710ff7d2e2f1be9b52d25322734430c5a. 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/KRF632102046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d296085621f2aa642ec44e51bd529f255b4bde08b4870770f9071c94cfeccc. 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/KRF632100942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0332084ec7df15b622d523f5a90305a1fc83a11e5b2aa326b5200ea2e2dac2. 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/KRF632100471.
All With You (feat. Tobio) (Prod. Truman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63048728e42a1fa4b11a42b46e4df1cc91e78390ed78f29b22190a10656ef477. 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/KRB472001750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dc86933187294581962190b1f6f29a7e5dc269955ab55e04c16099e574d8bd. 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/KRB472001330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011f1b2c1dc7d13d5a92f85d3d644bfd8b05d4a5d3b71b3ffd031d946ef7661b. 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/KRB472000369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8113fe548a3f6df330f8be3a2a3473e8b8a58e2c45e460ba78f41a08397795. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KRB472000370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca199fb0d972a241e17324e9ba14028ca3db4bb8becab4a8620fb0e1689f6a35. 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/KRB472000371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f3193bbd244dc7929dc8fe05878125d2217863d48e663672398c3c4c1a12c3. 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/KRB472000372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80159a237c9e58831f7df9c68b5bce418c867448de99973e7e4ecaf1c440ed50. 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/KRB471901063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2843573112e9ac3d7ddc374e3800817afe25a7d4865bd51cb96fd7893c4a43. 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/KRMIM1905418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edc9fc933823e0f28976a43b7db97a08cc6c4b7d8f9fe28c58f8fdc72d4cf5f. 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/TCAFH2096579.