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 0x0d044dfa9f138592aa9122695835d40625723fa7768d921dcc92d0b4429f127b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99f6193f-c8a2-4cb1-b318-fb2123600800.json and https://artists.proofprofile.net/proofs/artist/99f6193f-c8a2-4cb1-b318-fb2123600800.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 0x9c9d8121d7a44ce17caf4be48d3ad4876bd0b6021cb21d428cddabfac598dc14. 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/DEDH72000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd6f602144960ab77db4c2426202ae3289bbad843f05aa7583b13ba140b4c8b. 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/DEDH72000043.
Nothing Changes If Nothing Changes (Extended Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2739d2909ab5114cf009d8ad5e859c6f9f490265237ea928100bcca602f5fb0. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEBE72300919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae8b1d4434aa583310e778964728ed3ac14e34b65f8442bfee701d0bac39a98. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:10Z), 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/DEDH72300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048dbb3796d9e3653fb9857aca20bc2a7f1ef007d5cba402225328778d5f5cb4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEDH72300212.
Sunrise Sun Wise - Mixed - November 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5e39e1a0dbf0a028d1bf447e903ab30f83b68d8de3d4e387da6c71120cd4a6. 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/DEBE72400746.
Every Night - Mixed - November 2024 (WAHM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59f3274b23922998067b343c2a069e16ce09db8cc4ec2872001524a2fe45bb8. 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/DEBE72400749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b93b4db5471dd02aedd6065dbda38ada4a65fa12dac822879e18783ba11537. 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/DEBE72400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef07fb26c4d3b5910aed5d24e951c99e5cd8e6992ae011833d486bd4254cf8a5. 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/DEBE72400754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e0041632a7697bc8600ffa6618bfd9aecb8bc0b5bbeb1f9955c2154f4e8b5e. 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/DEBE72400753.
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 0x8653d5c0282e18279b1296456e84b480b29a9863ff0880fe82c552976f8ff0e6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMDA62511989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1659eff44b69bc11a7dc8ca64f12f8c9cd648264ea11bcd793f347191c24cad. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEY472577558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94736be108442cacb4b8a24c9d5dfae33af9058bc22f75eae101c2755217038f. 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/DEBE72400655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d943164f0a94e73f6234afba480bfdb184db5aec95d6959a2a23f57714abc85. 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/DECY52500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811d1271c38a09a6080a8d219065cc57b5c325189cce1899ca909fb9f44a68aa. 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/DECY52500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dba981d8b8c1f56bdbac634d9c98c1b174f5f469ebdc12167204e7433cfd8a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DECY52500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e77370e640d5dadf4f4b1b92ab4ca8f4adb831888bd4a1df85178b80915787. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEXO72266285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f601f480e71d6dd3b6f50b9d7b321262df5f1a5a418cde67c2c56e751fb920f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEBE72400549.