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 0x3c411412f0226925d065bcfed7ec5721a1df0e8671ef9774e06cfda8ce65ea6b. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c9fa69f-fd87-420d-af42-c08831a1ac6d.json and https://artists.proofprofile.net/proofs/artist/6c9fa69f-fd87-420d-af42-c08831a1ac6d.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 0xa579825043a0be0a856a2b3c53ceef31f95d197a3f8a3f16c3208f7973e41e1e. 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/TCAFU2151293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708d75f4957371cf84948611888dc0c53d36113432d5243975be71b34feb8dc4. 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/QZMEN2379733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970f68f5fe11f455d7d62d2ee1f8f4c05badc3f3e1599c6146c0e93db33d1914. 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/TCAGG2249971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505a87e978fd36827df68d339eba95d219d4540e1755ac1dd6675a1b2ecfeaec. 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/QZMEP2342989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708d75f4957371cf84948611888dc0c53d36113432d5243975be71b34feb8dc4. 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/QZMEN2379733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df58e9b948a3887274ca265b2b65f851bc4a02010df5c935f929ba0753bbab4. 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/QZS632193535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c40f8cfd05cf226befbb391f72cde566840f96d1e642a1e2150309daf25643d. 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/QM42K2218908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa973bc735c2e53cdf2be082e5dfc8d4d60b04e6599910d1201af15c46ea4bc. 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/QZS662144760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5c2d60248a1ddca398d6b36e438f3bc4533a74d06fd30bf6d190415e52c26e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZARB1868354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c9e2b4afa8b2b3752b8bb3080429f3489e57850e896452480f7a25477e12a6. 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/TCAIY2492878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5091306da592b8173ca7a1370248975797b84131af8ed4a89ddd594680cd20. 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/TCAIW2405426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1cc38f9f763cfcc764373493c8dcf3de140112942b3690169753cd4a4d3d06. 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/TCAIK2439300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335074349c70d746a9a58facb21ec1754c000ccd09b28a1a4c49ae05222eb895. 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/TCAHW2484442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8cb40773fddcff6fa539c73264ff408044f7f3036b72b2ce50d453296bf365. 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/TCAHW2484443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4777474fca7e4464771b8668994c1839ba28c6ce223ac73c36984dc4df68a78e. 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/TCAHU2410438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e07952cbc37f7c5cf0c89c77b4773fbc80213402233bfefc7bdf6120399449b. 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/TCAHW2484451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b211fd64b2cfce9b4cd81ca7cc38a10f5deca3d81972e3ac482da1fc2fb56a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAHW2484452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4777474fca7e4464771b8668994c1839ba28c6ce223ac73c36984dc4df68a78e. 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/TCAHU2410438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57926104a5b53be6f7bfb5c6310a827a1f6c9432facbe95b8557fefe2bceda0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CAQOI2300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5c2d60248a1ddca398d6b36e438f3bc4533a74d06fd30bf6d190415e52c26e. 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/QZARB1868354.