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 0x3e588d7a9fcd91f8a4914879a71f98570fa2745fd463cad5617bbbf3bbca79ec. 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/d759ef7f-7c6e-4909-81d3-1d40fd750b06.json and https://artists.proofprofile.net/proofs/artist/d759ef7f-7c6e-4909-81d3-1d40fd750b06.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 0x1e1a2946f06fdca828bc389c8fe11663db92d6f48f8688c8470fb7879b7731e9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACT1608739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b7b02213234a2366e4f38a7d8cab6cb5e5ac66ec48407f5c8c5ad4a24c5d0. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/TCACU1650185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f2a48668060c92cae51c1f2fc81299836e066cbaf260aba832e608e62c201f. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USRZR1700322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2494e7ad4d9fdb3538d61b8a11b8d11754567db529ac490df6e7ea2f02342466. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USRZR1700319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1a2946f06fdca828bc389c8fe11663db92d6f48f8688c8470fb7879b7731e9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCACT1608739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371c7f4f3ec1a747eeccfdcd5190cec7339979cb013031364331b99be24bdc30. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE5BU1901419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c389926d58d163170d52bc91fb5295f576f6690bd51cae9607a762ca85f1ec4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU1960071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1a2946f06fdca828bc389c8fe11663db92d6f48f8688c8470fb7879b7731e9. 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/TCACT1608739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371c7f4f3ec1a747eeccfdcd5190cec7339979cb013031364331b99be24bdc30. 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/SE5BU1901419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c389926d58d163170d52bc91fb5295f576f6690bd51cae9607a762ca85f1ec4. 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/SE5BU1960071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc54ce93a1f830b9e6be08a8220178efa285eb460ae42ff6505b3e89d20a539. 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/QZHZ42150377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7373ed739f968a9c4ac9c00dbc28634adf1d2a92fbf4b88a1e54208a33a7abbc. 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/QZGLS2111925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66571441b9a828d32f4d9271c4cb701572732a129d461304617cba3ead539547. 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/QZMZ92080582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779093d1aab7294d691f2311c699499b77881fd533cbac8b6263cfe90a1839aa. 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/QZHZ62154328.
Kiss Me, Kill Me (Live from the Graveyard)
Scream My Name (Live from the Graveyard)