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 0x144e771c5b90ebfa4a202cad2f20e27e5f9df01ef5ae025753a485344ab9ec41. 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/984e0c34-808b-46c5-9146-652a0237fb14.json and https://artists.proofprofile.net/proofs/artist/984e0c34-808b-46c5-9146-652a0237fb14.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 0xfa34cbd971df91086032cb97f2a76acb72a9d635e9b6dd2af274aa4e6718cab5. 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/QMDGQ1500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41c22ff1196377bfca0f8ffbf3792baed1fa67fbc4ff03d232eee9b5f60b46c. 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/QMDGQ1500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622a1655b0974ff535a3484dc090763792c211aeed319a0a0f3b2dafdbafbeb5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GBJAJ2001346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3da20b299c66f31f5f9b2c3273d05aca1270960f440f2527b6d3ce81bb2bc69. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/CA5KR2161449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb7bbb51231325ddeecfff125c7c0882fca2d3b963b3ac82e36d3fa2a1de21f. 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/UK4ZF2100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5381daae999d66329314685863bd559ca9317c5a0f6b149d7fd5d3bcdd8ae1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTGW2100740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee4dc1c68f9efce5442e58ddd4c062a551e75fb79e379cf631b180d9a956658. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USLZJ2201013.
Come To Me (Proper Villains Remix - Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80afe3d281583e53de24e1146507524fe3c9c909865cbc2b1732487f8fee0946. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CA5KR2422864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486cac6828d05ec8af105668ca5da2148c4783ebef2b0337d818d2cfc4d4977. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GBKQU2477044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806105712e1984a873745c573dd552e1d6169a66be5c711d9bab433517128165. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US38Y2516787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e71d2d9dfdab197704423651e10a47da8864bc3affe89cd406c66e17de392a3. 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/QZQAY2576088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455156b851cf9d35cfb2bf92d5089c974fd1c589bf17cb62ce068c5567d40b31. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2198950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afc91da7671c4416c053a4844c10ff08dbb4e6344459a7ccfbeba6c3984a929. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2031386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eac022f98ecbca5aa9dd7da04b962bcc7624410b10a6db498c72517707434bb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2031387.
Gravity (LEFTI Remix feat. French Horn Rebellion & LEFTI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d808da15e212232e4d71b44e305118c4bf6c1849907ccdb50d5361795e49f67. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USUG11801798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8045c6fae9e2e5b5ec33fb8f59e1561958b9d2c686514d089514d46ce8ab1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2351460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5952dcb70b2c813e42483267c0f943e2941067b8ee134d08c6312a29afef6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2336633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee6ba14a4395d2ee2a48f27683ba9f9c8d5a43b4c3518ed2ed5ba1b5fac1279. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QM24S2301898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c74a738912aa0674c00406dfe9b4cd369235b7d8e9e3ab8dcd0f442f7217f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USC421600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1dffcf854cf32d92e954148bc32958cfc3fc68dd49c3bed286e68ce0aa30f1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USC421500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39ee607e7aa6c9c5d4eb837cad82ca1beba1c12cb478b9d4bc76a6e4c0b0ab8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBJAJ2000415.