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 0x1c6474162523f498135bfb49a9c7daa96fa7c52cfac006562dace0ec765d241b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbf7543d-64c7-41b8-bd5b-6244025c1aba.json and https://artists.proofprofile.net/proofs/artist/cbf7543d-64c7-41b8-bd5b-6244025c1aba.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 0x1349c6bd10e67f2ae2319ef5d786cdb41b9b2a7ac585a231ff5165e06d2c8381. 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/QZEKE1893348.
mikumiku shit (feat. hatsune miku & kosame)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08218d591397b9cb776d64ee3e3ccfde1544050bacd9199e1ab55682d9052cf8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZEKE1893349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25571827e6eba78d119d116c524f30e44f2233098638b0adc098d2d68cfca6. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/KRZ291937293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8c619263dc166833340b271472ac243aaf5ccf7735887dd4ff2ddb605a7ef9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:04Z), 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/KSA012227320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7d066605b0c6ab4b1644828cb3e585d5a9351d1ceffd3f1fd668072a49c15f. 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/KRMIM2352240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d95b135d24246959b0aaf0267e6518dbc59a056cea7e564da82531fa2d3513. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:32:18Z), 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/TCAJE2506013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f787bfea9338e826125dd5c859367508f394aa60a5f247a107281f637ad225. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJF2566561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bde567e1e30831024750e8286f9e306af67adb92f06103c1aad16944cf66ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJH2562990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6527a13d3652b01782389b76832dd7109741b77987a891ea419b2b4ab95e30c3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAJI2598939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd6fbee987c86589336374ce595c717533e4462e57e3bca4ac83e8900268873. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:33Z), 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/TCAJI2595293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839e864841070028eeee30dc377c386f173fdb594a5d903d759bef0a6c43902b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJL2544165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aae420b5ee477b4a0dd4f68a8447b8f2f4571bfe886fa4e8416de65c00c8f3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:08Z), 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/KSA012382862.
VOCALOID × TRAP = Tensai (feat. Hatsune Miku)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdb40398016946d0f0c14ab242bcc00fd2f375e92cf2573600a338385d1cdef. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/KSA012382863.
Lil leanie syrup in my cup (feat. lil leanie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447173ba30aa5f0b69de1a4c09491fb9cefb04467730e57ad5fca273159e8641. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KSA012386706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e726c05b0be5faa40dc79c13d231f8d5c71a85a737419712768d17074091a51. 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/KSA012386707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cc9bce2ccd26c4fbbea4958ee1de1cd6c87dd2ea84c5b5cae64d742b68058d. 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/KSA012386708.