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 0xd234bd4b7a6c212a059ae2b9d1924936c560671f102fe43abe4f1be840fb4659. 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/0c1dd4e7-efc8-4fd4-9677-824c497f2264.json and https://artists.proofprofile.net/proofs/artist/0c1dd4e7-efc8-4fd4-9677-824c497f2264.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 0x19925504d62fd6ef49b56b6e27859708399fbbffd677478d1dc485c827edb278. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ52190985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52391abdd603bad6f94998cf1637cdb8e3fdf418d51e3c8a1d14190f77438aa9. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/QZHN52193215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cdd398f6b1109806b783cb30eb66280ef2c73a16922a957c250a1080d6ebc4. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QZHNA2161963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4df83a0f9f73ba368ec8a6454d6576fada0e6d5bb517cf5765a8104d378aaa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:24Z), 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/QZMEN2192909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144e2875fbee2e8ec4e383fa5a3e97d19e4f437cb800bd569397c7c62e36326c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAT2189191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ce55cee54502303f5a0f761befd66078c2695d9cfc1986404e4ece65bf73f6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ22275291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d6164790a096c507d4447253a84d185a3fd5033242f9395246feabff2937e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ72239110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8012d0d781e81a9ee05ed508a1d5efffc13e11b8d8d0e99f53f4f0c9d4c154. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZK6H2016906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b968a5f894365b8519ab504f6ea18fb09387a2f44d40bd6271a86a827711787. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN32225956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c779dfde139954e74e87c7162c8310478d8433efd238eebba6cc2b93257825. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6L2284195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe484a62137d475b7f0bb4f6b7cec78f34947d85c216cf82b5b89328ea5801338. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWW2285500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879e87e02e3dcb322e2d26e35f4b2be6ebfd30cc3efa3660f01b6eac119d1ddb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:19Z), 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/QZTAS2255424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b93fc647feddcf905d817ace89c4ec1f5e2b150dcee14ce1292286ac84c2c39. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/QZTB72237103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e133379ae98cc737d48614bc87ca8671c81b441a346c62c4eec91e5959beb4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:49:13Z), 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/QZDA72329298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1001c7604d2369a1bfa82d9f4c76e1058629f6612b3862722dbd552cf3db50a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:05Z), 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/QZK6Q2339278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bd316c0b3faf0350db125879d9edf58f9bf45e863d872c11068c10dfe63ee8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZRP52348205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025517be08b609ac33cd2500d1447922f513070f93285cbcc03606ae1a6d5895. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZRP52348206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875a0201c02e5fa7cfdc49eba39e729aae80f943faa6e8fea60875d5851b44a6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZRP52348207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20c8de6107b61bff81aab067bd5513681440d9142398682e19e6e9a2a779c14. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB52405179.