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 0x24ff87b17c513985d2ab9a2775a77e4cbddf0319b2e2d4035b3e40448b17eac5. 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/445e5eb8-51f1-4fa0-a93b-8e3e4f0ce4a9.json and https://artists.proofprofile.net/proofs/artist/445e5eb8-51f1-4fa0-a93b-8e3e4f0ce4a9.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 0x7b210a8072d6e12c8a65d0b4d521abbbfca114596d757c2176a9049155363f4d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZAPG1700340.
Interface Original Soundtrack Vol. I (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70078215872c111bc8251f128d1e14ced4c2964885016500a7c44c19e107975e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZES71916517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5031c04927365146f1d48e13b1cc65a47d968ad4fa514e94a2a0c20b40fc0035. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES71916518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44710dab4ab57d101d0026e55d1ac4a3eb8be150b03610e1e9d5fbb19926221. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES71916519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ecbbdb81c0e6bc8a8ceb09baebc4206d9d8a033c72e73e7521a7eb4cded084. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZES71916520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2701e498b1a71c6f65d885b290e438d04cbd514e010ce4c3421d4a2d498f056. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZES71916521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5b84d03a22c0de1b02bcbe0e193b2ec42fc04d5d737bcb58ccf18cfe05b75b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES71916522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5891df1391c35283e441f5484e0281e01c71364b6ffa21a1e408e584f83214fc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES71916523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785a197c7553f8590bbbce8f7e191a06c174085ac364e747f632633758745862. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZES71916524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825e8a81decea2af33b8b48dfd91b681be914558ff2d0b66da06e3f69f1ccbac. 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/QZES71916526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3727c10df5a6d517cbf3dd3f66a11abd1e27e8a183d89140c3f23ac3cd9c776b. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZES71916528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd7c41e2ac6bcfec678f8dd955ec757485ad0cb8d6ca1d259d805e10b2e5d5a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZES71916531.
Interface Original Soundtrack Vol. II (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede90ca6319c22c01dbcc2e9142fb432690a5a0557e5ef029786a1f931cd0223. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZNWQ2164224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ec8f225f39bd130503c970548182aa80adf15981d1969603d4ef83cf9aa3ad. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZNWQ2164228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b11037d3423af2c22f106ed85dc44cc31b0e1a7a10ae65df086710e1dcf13f4. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZNWQ2164232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada9a3831c54981db892c9fd3b5c20de4f06633207321dfe4f419992cca1b38. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZNWQ2164237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d25b1958c2c2642b46c7c4295fecda740ff62c2ff105ae578f3e757789ccc3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWQ2164241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e43cd0f72d5b2be5219f01932138d131dd551d438286ace309dd10804f41ae9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZRP52157532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2be12c5d6b376f0e72cce0bc40048e4f3b7222d263113f8b913ace98f7d607. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZFZ22220175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0d32a038961a6868176e14fa748b219701870d05704b8c00c0e0af737d1946. 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/QZFZ22220176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241efec3780fffda39ccd51597df995827e73699ea2e15a5f7580e6ea4822ac5. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZFZ22220179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc032253bb7836abadfb34a317aa590a8f5f08cdcbc5be357ed0b53ee791bbd9d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZES72210062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3800ceb01a66ee3d639adc25caaae401fc77caabe7b0300e36244f0ccb6410db. 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/QZES72209594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf459345b126cc6177570855cae126a5a7afe0365b2e3ac3f85c21a9b70f8e9bb. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZHNB2258109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e4837fffa367268db9343b386ffb666eb130e76de97fda53e946c103ccc193. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZHNB2258110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34573be4a0ed45622e662e56061d1bfa389cc1ec53df8da72e98a198e12c441c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6M2277682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a725fe87ad5064c28f6864064948fde35242a1d09a6a30d869356975b09532b. 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/QZTAU2220626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5703935c119a1a139fa1cdc382a7a7ef68fc3a5998ea624e267bd055ad4358. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZRP52317982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8255bbeb54d55fe55987abe4245795855f17a586392e78036336b09e34b10013. 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/QZRP52316567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c1cb94df1acee4838141fd53cf0cfb3971b195775a27af492ae9e2bd310e95. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZFZ32466111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2a4d8ceabd9b61266c588c8705ac6a6f61b38c617d253abd503d36ffbcce6d. 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/QZFZ32466112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba86907bfc471d443c67a3a2c6b0b9cafd66db420b77f8bd86e329e8afb81333. 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/QZFZ32466113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9450d5fe65eb68dd281c374a320753f0aee9eb4686e17f2819e17527cb90ddc. 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/QZFZ32466114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2924cf798826b95092722b66e49ecb1d1820e05a37ebb48e1c18deccaf2ab14f. 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/QZFZ32466115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3906ee4c3362ee2695caa92775a868a75371fdc9a65e7d0276890baf13447fa0. 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/QZFZ32466116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110b94582acb745d72cda961f36612db38d99dea275904ea2ec085c6e7755197. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZFZ32466117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabca8595d7292f171d61e6f17da6126236d7ed693942007bc75bb2f9040fcd2d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZFZ32466118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e7fb2751ac1357fc27383c445c7d19550031833421a0fb8c8fef85e5c01af6. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDA42538141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd87046097e0719595e6a0171a946dccfc3c4bb4cb6b5e649269234e7cc44de. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZDA42540135.