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 0x9a177098c2e1bfe9eba9e104fe6319e8a8ec3f0badaebc1ee08a9bf608155deb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/caed3a5b-fdfe-4a66-8701-6dd699d924ec.json and https://artists.proofprofile.net/proofs/artist/caed3a5b-fdfe-4a66-8701-6dd699d924ec.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 0x4dbf3b2058dad46f5a51e3743fdfc387470f3416cd92b13623f55be0cd15cd7f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USHM82200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aca3f827904d1d37d7a2b1707f2c4a407e3aa4dd5bd36bc9c0c70ace2c2267c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USHM82200716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53bd44ec008c5227a56b8da5a71cc6bceecb4e720841d486211033cc849f2ea. 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/QZTB82240845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cba0a66be2c1d8ff3a1e31ffac7aca5f052573f5cfb76df69e8b672589b80a. 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/QZTB82240846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ea24652b2fd1fad9459b8f927635ea769e70cec46d0cce1c9201cfab00d24d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZTB82217533.
Silhouettes In Blue Light b/w The Animals We Used To Be
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07776e67bcb8523f30793c3e992f298f52fe16caeef17bd2ab5be1a79017ace. 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/QZFZ62488650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465b02e2de6e1b1263785c6d8e7c1b8dbf37e93ea2dc7678b104d8f5ae77c82. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZFZ62488651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2568f8321620b9ed01d00d733c3aecf9fb469153d944def18dd2fb9b8edae5ff. 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/QZFZ62488652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfdd69b683d04513e4dae3b69e908e626325d60038b62e37efab5242036b52c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFK2381821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7dfdcd9a8c47ad221197ec83319da8fe5e7c4443f2df2a364fc5123fbe3657. 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/QZFZ62488653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ec390021215c83e7d2ef03f418ac9d9b5edea1f1dc75a11840997ec18df50b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFZ62488654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b7f81b8efc0ae9da09125d878891fa6c17215c4a4b32737e496a2460d87c89. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZWFK2378653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17976c34da7794ccb20d3e85c6fc6fd9988e97f7f375b7c0b7112aacb748b4b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZFZ62488655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad81b9ee08b083ac1c52481f7cfbad5886156651786f5d12e12b15cb8326454. 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/QZTAU2435405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed856b12c7bc0b66e274385848bdc599da7a43aaf7b651ce2aa6e6848e74194. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFR2482129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96457392ad303c546d777667ab1211709ef985b354a30b5e82e765d756afd609. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDHM1622420.