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 0x50f0f3d1f9908f4df091d110f229c8c0b4af2c7e7f9a844157d121bd0bf5684d. 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/60ca0e0c-5c95-4cee-957b-f00e5c7a255d.json and https://artists.proofprofile.net/proofs/artist/60ca0e0c-5c95-4cee-957b-f00e5c7a255d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Мир без тебя (prod. by appliexe x cvedem)
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 0xcae20f9b489804922da44263b6dd45f860f78c4b4a703c870273e48531d81a5c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:11:22Z), 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/RUA1D2161808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9a99631726cf3f194f79b85ca881afbd08146cc26518f46564a45f2d021db8. 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/RUA1D2161809.
Новая мелодия печального оркестра (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b26199ae8ba9e37c5c301876788121c7494e38d489c1814dcfe3cf9e796f976. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/RUA1D2215294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5500adc528a525c15ba9e657accc591fe164f87c35145ffc262157cdaf18bac. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FRX762220549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff33533423784cd6ada88430383fd5443a888903652a3f0650ade27c0e139c0. 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/FRX762220554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f25804876176b54313ff8f778398b465ca25077ef7d42d2fa7c34d1d96ef6ab. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/FR10S2336166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c71b41f7f7ccb983561db448380c47f30309c14d3b6e5dbc890c1931b7b522. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:05Z), 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/FR2X42383806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fb755c98e354cb494a21da9b67184dee0b83a3bcc982ac370cdf1abcb53233. 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/FRX202367980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12773adab585d806dd586a1659fb713099a87cc80ff51b2fc33c830aa4f8d70e. 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/FRX872364301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446fb49e64eaccf0b664d4528c9fe87fe5a3ffd957c7a348b34bb8d1b230b602. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:36:24Z), 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/DGA062369496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a12c807b931bfc37d658b7dddc0aa18c22f791ce6ef9bddc248bc458e5ad5. 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/DGA0Q2396047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a35162c7fc26a6476159ebb056c09f68060a7de40e414df1ffd3750d07cad9. 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/DGA0H2441549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ccbddbc9721cfe4949c8dab512543b570d92f1900bf7a054aa5bfa64ab3072. 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/DGA0P2406608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d51d03322f1c9165906037395148f5d34881070e27df5eccc0e954d7b300b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX872508076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d27797a566bc05178b347632f53cd22ff1959d148d9003df449d5643bb2f2. 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/FRX872508077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1f29a314955e751069f23c57a9d790709a41ebbfd665c4da87cd66e0fc4542. 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/FRX872508078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed822857066e65719b0ecdd2c7d0c782a2f2440de74512b88e942f27b5b29c75. 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/FRX872508079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67623621b32bbf11a4d78fbf11c4e504110ef23cba7775db3adc7a0e9c189e92. 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/FRX872508080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cca8ac77cb24f1d2e7a01ed4574353e2cc98e8f46424ccb125d9f84b22861d4. 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/FRX872508081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920cc787aa266665e3b5d93a02f7c5631387342c46458fec6920ec87dee26c72. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX872508082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abcf2aa1098d299bfa4baad2dd1bafdf680c39caca1c32b41931cf7f4292604. 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/FRX872508083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de65d238919b1bfba518933cf486ae24fbb65daac661a1e453e968e9f079ccf. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX872508085.