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 0x61eb1b206bc7b4df115aa87ecb7ca0cdda00a440e4ed6a5fd171983fa748bd89. 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/ca2fb90e-17ee-4ad0-b844-3be815d77393.json and https://artists.proofprofile.net/proofs/artist/ca2fb90e-17ee-4ad0-b844-3be815d77393.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 0x775940d2c30c33d7a3869625bbadd225b723a9da61a629f75a80a0aaf5b48e8a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYW2076261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77000c8a2d519f385688242e55292e043150ac6809fc1b2ad1bf41e1f69d011. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:46Z), 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/QZMEQ2156935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2dda560e8b03d938818942f0cb48e1f406c517d72ea2100bb6448d7683f533. 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/QZRP42197238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f694481ab701a39b88c3a061ba107614894c03f8fddc5fbae94c0addd95b0de. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFZ32303014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25035d07d4c331cf8a09012faf43497ab3652452a08e5a06e841abe177830713. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHN52485853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57810a0c03e7754960ab9f8aef20229225f84ef4c1099a3b0b47e50347b1bae3. 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/QZNWY2476393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dde57dec1d003a1df0e1a8d9fd1cf376bcccf844f4a57b5da844cd10cccbbf. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWFG2436756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d1da5a3a11afbb51e5610b8127d624e4d23303c17c19528160b4cb47afa252. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:57Z), 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/QT3EX2425356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a3c9a2ec778401fb67a42a88e870f7c2e778dbb7b0ce211c981b0bb7858acf. 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/QZFZ32519922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bcf6eccfe50930360fdfb1f84b3366595e23534f3ca3a55ee211c110c4a80c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES82502074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17992a8f8970ba3a87a22955f84975b0bac2e73263f92bea72cb346baa837f01. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHNB2586169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec80b6a51f35f553e7e6930b3edabdee82768e05aa8eb25d8ac4030b0f9f2f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:25Z), 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/QZHNB2586171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa4fc70acb7bf45cc9a6441a224acedceb7ec4295cd15a7222a03a04a948ab6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:53Z), 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/QZNWT2559939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dde57dec1d003a1df0e1a8d9fd1cf376bcccf844f4a57b5da844cd10cccbbf. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:38Z), 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/QZWFG2436756.
Love me, Love me not (Floaters freestyle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc930a5936603d3ff35e5cb2adc8e64802578d150bbd68a84e502fd7a19e1af31. 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/QZMEN2379525.