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 0x40ad4a06b773a2d0d0ffb565ed712c47433092ceb38088f7d060974c4b6f3639. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/429e0507-bad1-4ec0-8a3a-7115ce497d28.json and https://artists.proofprofile.net/proofs/artist/429e0507-bad1-4ec0-8a3a-7115ce497d28.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 0x5915744ae432130b94e89b11d77a1d560df6f8181fa7fd549e06fd33d836eea1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/SEYOK2104952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edc3e78923cd28fa5358ccfd3a91970cbdc80be1f9b7ef1564eb95d887b5851. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:55:41Z), 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/SEYOK2104953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc030ac8ca5e5bcc1fdad6b592a1b9abd7e52f4bf16b909bf8f1fe53e553135b5. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/SEYOK2104954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952c7bc2af98d9756614c9674242f4da56800656ec7bde792f563dea90e3fef6. 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/SEYOK2104955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18f92e50f633a07d5f69012ab2f6f6b3eb8b6c5f1c4bc546d6b888623bcfe3c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEYOK2104956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3862cb540bb5358159ba8c5639e6a268f33a1265a146871af66fba2f9a2f94. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:41Z), 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/SEYOK2104957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0f63d795206a35af2413f4ea9255d6a63433c2ac77093038c8b2829510ab13. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:31:53Z), 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/SEYOK2104958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae35c707ca201be8226609e39d9978f6a7dccc339ddf8f561b51ae230b62a50. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK2104959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421f017ddba57fa12203f883149a7c5563661e835f46bc1f397d9e8d2d6d1969. 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/SEYOK2104960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c88618603b7e358f96abedeea3f58ce920ec60abd40770be4e38ddb73ffd12. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEYOK2104961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca25ffa28a1f7584fc3cb989924daf07fb394a4a73a0e16bfdaf8ec1e54ad17. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEYOK2107258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82d5f9cdb5b8ac651d74e430751375fe2880686260c86a5ffd2c21a0f2d6bc3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEYOK2107259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7162958d42990807eeec25a80f548864573ef5fff7859036979ac63583041d6. 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/SEYOK2107260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2365f759f67dea7f29b89860a073350f82e47cf939891725097c271d3b0d02b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/SEYOK2107261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb256f83f8a36263abed01a1d6a39c2341a56e55b1d5516dc2b5639588343e01c. 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/SEYOK2107262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5930aa791b8e9efdacb39d3f8f993046d25cc40f21bfd6bad2d60ad8ef3550f. 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/SEYOK2107263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c87b03cafe822e797019a8d65a77a34c4cfde9db9587dcd54ac0c9d53d2e748. 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/SEYOK2107264.