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 0xb6d9721f1fb3110338cdb3011f66c3bb9dcf66c104e4e2cc5d9f8541a45941e4. 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/4825ba67-4972-4778-a3b5-b75cb030f29b.json and https://artists.proofprofile.net/proofs/artist/4825ba67-4972-4778-a3b5-b75cb030f29b.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 0x1de8f74b08e71911980bc607163613d5748e931f70400b36d75031690a028c56. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZK6N2498483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaee30546258908f320517ae5e6513c08df629c86c6fe4097ccc464dd0d343d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22532363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06eca569237c3ae9385ecacf9c1f1b82be6e6c19107a3d96b2383e992527785. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:48:16Z), 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/QZHN32408592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797f6b37edfd93af539840b64fcb2d6a192d8d1d03c6928df9e2eb1670c92261. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHNC2501110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942e3c38f25ea72b5b174baa09e2cb981d77687af028950c78ca0757232d08f9. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:52Z), 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/QZHNC2501111.
Bang My Line 910-203-9983 - Mixtape Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19501dae00e8b292c8d725ccaedcbdf497f93c2582628aafc41becf220c660ca. 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/QZK6K2532499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71075e8c8ef66b512bda9fece7d316c45ea68cff91259fe06831a3a3a06f438e. 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/QZK6K2532500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce8a09536f0cee1204a2e65cc203da656539d8815d3878a303c4c1dbe9d3e25. 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/QZK6K2532504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d69f7079bcf08b23714d699837ef2a2d783a1d006da9e36429a110b8ef3b2. 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/QZK6K2532505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4a03ebfd5ac7606fa52ba602826038e56a869f92fa44005eb2a99b948f97fc. 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/QZK6K2532506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa826aaa36c4c5c8da35d3e75a2acfc1228a0c617d81846103870c12f3d2b0cc3. 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/QZK6K2532511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9324b7745fe32fe975753c96ec4af8fc71bc72abe3b06afeacaad5876abe9d0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6K2532501.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3c8f64260f34f0caed37efff98a941a42fa830f88c27d6823c3fb2dd9a93f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6K2532502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05b88403f50148cc6a807c68ae92031d19cf5c743436fcd85c1e3df27518b2b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZK6K2532503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83f782c87e22fc0e16c6b1f22d6581b11d6cd47ed95af65a5e92bc6d12c2ee2. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZK6K2532507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4e12a959eb18f360c9c26bda664172245e916e9566c6b381846d5454b01b2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZK6K2532508.