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 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 0xc4db5ab880879204f03f1d82ae28a350be03fdffcc1dc2567b7c9f51437b30e8. 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/5a2b20f7-d2f5-4b37-9c15-dafff1f6dea8.json and https://artists.proofprofile.net/proofs/artist/5a2b20f7-d2f5-4b37-9c15-dafff1f6dea8.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 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 0xe03bfd077b894bd845837786c7f54d05d9824747e8a1ca9cb6562fd610209ade. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH1995083.
Coyote Ken Tucky and the Navajo Bucky and Their Perilous Journey Through Corsicana, TX in the Year of Our Lord Two Thousand Eighteen
I Wouldn't Treat a Dog (The Way You Treated Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ee4b869eb0a6e329260234584fe2dc5f7377ecea1778072c8f60cff8f11658. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US2762202339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba61cd6d16b9aa428bd7bce0d1de752765f6e82c16854a9df8491b41e9a28d2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US2762202055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50223489db9adb47c7d05135cb8db882ffff79fb52b36e034bfb647f2ffa52d5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US2762202056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc28c799ba6c5f0432a17376a27421d26dd91d71425d4f015b7a8ae7a32a7ef. 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/USDY42255936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b01631cbcca2b3cc9f962692626f9765400ae589b7f785ccb9aa6275e7cd22. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/US2762202341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6634966d2ef254234902e9f45cb1cfbba951c655945049c4671bdf300845c38. 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/US2762202342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7898ecede46c9d55d3405fa027f224408a097e817e01a0a909f1b46194456e82. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US2762202159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32eae89594289b8b7cc25d7f93a45c8c911100679e8ac6842afe55d4c260efe. 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/US2762202054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703c9711703b9585a780455714822d2d8369bd8601f3ead0b6eaeb2c75f5ff75. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/US2762202344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8568398e365f76eb2c299798dc82903a2433803e443e1e445dc237c6e439a58. 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/US2762202345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224e1aa6751ad11c168ad629258e2bf1be357b60a5622e36fb39189e6e51ca5a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM7282471050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4701b84148b50305dcc4bf09852b863fe7be03feaac11f398c39670439f725e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM7282471054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c1e31b6dfd8f8181513be21074521f1424c87dc76c9df7e801c3469dd29a40. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM7282471053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224e1aa6751ad11c168ad629258e2bf1be357b60a5622e36fb39189e6e51ca5a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QM7282471050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c1e31b6dfd8f8181513be21074521f1424c87dc76c9df7e801c3469dd29a40. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM7282471053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4701b84148b50305dcc4bf09852b863fe7be03feaac11f398c39670439f725e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QM7282471054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019d7f2c8ac6f7ac63510daedfb3ba99a16865d3c332b2e221c15ddf4a979e6c. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QM7282471058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3b86a939664b1763e9fb3cc8b32de1f5fe0c745040c868c199ef2650f4058c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM7282471059.