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 0x35530104b196127d7cb1f30d343512a6809d38928b0a0c7dd87f35f2c0f04b71. 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/d9d404de-19b2-413d-9bd2-3b830ac1dc0c.json and https://artists.proofprofile.net/proofs/artist/d9d404de-19b2-413d-9bd2-3b830ac1dc0c.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 0xbd86f9641b021f5934e040615c8781ccbfb712360ee04e06605207385b411a08. 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/QZNC62209289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd177ce8cb688f52673cf5e94472e615b8dae5861cf3046bc266577c6ecb6f487. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNC62209287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6627691ee366b4e94f2d150cdfc5b8f0ed75e6a82a9570d17aed378c982dc02c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNC62209284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153a038af1f00cc083beb5887dc74800b6e090f4c38ba15b8799cc295f816160. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNC62211778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393a0cb5b2af3510902a431b977bad59453aa3ff8fd39738c0e4a00936c86938. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNC62209285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80812250d711a8a8e8b8112a9f80f1ce48afb981704e43aa7968a08081b2b469. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNC62209325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0648a5acf23279f405591eee150c349ccea82dd9b693890853db2b9268223028. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:12:00Z), 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/QZNC62209303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6b533ffae62cf508eeba9115e2ffe8d14b200856e8825b982e1dcabf911f44. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/QZNC62209282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66fa938b904f4bb00d5d4b80ed5ce52148062e895d70750a08942a98dd8ed11. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:54Z), 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/QZNC62209306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff3b489767d435041fdf238677ebb2f396541ebec9a3b591ba6b2cd29b68000. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:00:52Z), 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/QZNC62209304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a6bc0f043104c1db44f5e95b71ced8a30809d51aeda8fbbceeb82551ccafea. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNC62209279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360b6276e4eaa6d3369f237c6e6139a0048c7e0ef36e0a579b2c1ea5c2860793. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:41Z), 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/QZNC62209995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd13dd9fd06bfb04759edc51592be000ecc6663388af939a8bee8aa4e3249c54. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:43Z), 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/QZNC62209310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759b2605f383e35f0d9968167f2984fb9d554c7bbfb633ce4a6913b23303bb2f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:27:06Z), 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/QZNC62209321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f765675675d4c917f3e4ae44dfe3d0d2f40c83837bccf97d8c5d6b6a9f2a9a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:54:12Z), 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/QZNC62209295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9790c2ad7066bd6f0bf86efde05eea4659fc3971818738bf09da2e675b1ff79c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNC62209286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fd32d2ffb6aa6c7140a66905e04ea164fedf79ff6ed597066be2b4c2de2684. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNC62209311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa321c8f0209579453cc48012686d69dd5bcd84fa68287ec19757112944ffdea. 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/QZWDW2223503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1187ed2559530991e49fa3cae4f54b7bef5ec24a1817c6e9bf22feb09077b54. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZN882398708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559cdf06ef66cb469e2a8ac6582f0bda7a153c3ace4aad0f25d6db125445b36b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZN882400832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338910520a0459160014965cd863489eb1079070096b1eff44219bb2a980fdcd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWDW2313131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08c6fc5739e3e5c460617fcc42f7568178fa6e68f53a345b016e3119f0255ee. 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/QZWDW2350642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8eed87961d740c454592702e1eab49b742662ed8f243eb0e8122d427c92373. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:03Z), 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/QZWDW2351951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb93c3158120817ab33d2431f9578f50f324312f55646d6b513679581b1d32d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:07:34Z), 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/QZZ662365724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bfd36fd8f8094b5b670bf405ddc3541fea65cc9f1526a2a1adf8ffa7260828. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ662404358.
Fabi Ayyiala Irabbikuma Tukazziban (Classic Version)