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 0xba9848703dcc3d390fc568ed1978e0d7589e8b4f3a7bdc02b91fc54994695df5. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9075789-505a-491b-ba4e-1d74f2eb6e77.json and https://artists.proofprofile.net/proofs/artist/e9075789-505a-491b-ba4e-1d74f2eb6e77.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 0xd586136bda299192249891937bea4960813df02c00db3c3859e614911a4f4b25. 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/GBDCR0700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0d7bbd7dd4956d61634c58e89cf3345b9f83973f448727d96351a9f8aa2ca7. 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/GBDCR0700155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7ff9e65a744cc98fae0b6b6c4ca3c1d70eb7696186f49d0ffc3af111a9a153. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBDCR0700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3c56d33e55abc600d91a865a47b9d62a290f42cebdcfee58f907dfe0c92215. 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/GBDCR0700157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4728eb18c8f6f64ae732d458df48970078c0011071fec6ae028f5c6447b19dc7. 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/GBDCR0700161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec829df04dbee96ac0c53590e81d2e4543eade25748a3a0a1b765918d1bd0b07. 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/GBDCR0700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b0791b821f99f1cc4a654e49adeb8868287313643df353b3ecb1cbdec2f51. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBDCR0700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bcf614ae059b8b47b2c29da9179c7674fb7d6122ea3183c2379e90c6212b93. 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/GBDCR2101087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deeee3dcc9844badae40afbd8f1139f4181823fc1da38fcd7dbd52d34c28069. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDCR2101096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236af8e3e76677d488b0c7473e5d27156e36408324b55029b4e6a57232f56460. 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/GBDCR2101097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223c5798af640e2c39d938bc8bf37235bf744231d1901970dcb8e497092fc1bf. 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/GBDCR2101088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44559f7416919b41a80a518145f18e72d4306a48a4764291218cd1b8ff2fe4a8. 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/GBDCR2101095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2c1b5c2ea5b4927b41ade9382127e236d457b05bfed77cb5e2cea948419e39. 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/GBDCR2101094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747291902fb6911ca92ae5a878247ac334ea176736d754765c438364f32f6a16. 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/GBDCR2101092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0d7bbd7dd4956d61634c58e89cf3345b9f83973f448727d96351a9f8aa2ca7. 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/GBDCR0700155.