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 0x8cc0a14af9d49f17655ba3b001c766b3bc7a7cc29981e1bf69b9b113f1681bcc. 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/03315d94-2a77-4a4d-a77d-367b2fd3cbd2.json and https://artists.proofprofile.net/proofs/artist/03315d94-2a77-4a4d-a77d-367b2fd3cbd2.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 0x21bf5f742b0c162dcfa7411602aa6515b17a2c220abe5fb5f221188d0eec3c09. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACR1622083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fdb650df8944093bedfd3fc826875e5368dae6c540a3eed4ee434fdbac5c0c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACW1797008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd3c4c656ce04a01c66b00d88991cfc3a7767c7cccfcd4fe5095f4f6febf93f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCADB1778518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacab0f46306e5f6bc7afe6940df89d9be3cefa2a781a37936f408ebd5cf89d0e. 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/TCADE1781767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5732af7c7fb62372cffc10dbeb39cbacafa7417c5e3b47f78e877acd786da0. Chain 2 (Bitcoin): anchored in block 957959 (2026-07-14T05:54:20Z), 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/QM7282023077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d29dc013df72d3b1bb040e16f2292471baaf84d201d23e6ba156235ac0313c. 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/QM7282075979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb4fdad82988e2da2aae43524a9c86651f62c4eaca0c1304cd930771b196705. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZSYP2304203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca88966c428140ddc7f000b759b06afd1b1899c201529aeaa0b55f6a975a2471. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZS7J2442786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf862f338b65dd3fd0c85bcefd9ca54974533c522075d714e6a388684cb119446. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZS7J2404293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe919816ab6639b805faec7dcc29935a4a2a130cdeb9f3a0165d5f383c5950a65. 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/QZS7J2421715.
Fire (feat. pennybirdrabbit) - Tyzo Bloom Remix
Fire (feat. pennybirdrabbit) [Tyzo Bloom Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc9b74dea97b2627f0885f0608d37daef0038ecb11c1fe316ec7ed92106736. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USUS11700362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29bed57260f12d54b91d52aa9d470e4d39eadd4155446547b234579a7f6c9ca. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBKPL1791505.