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 0x445e0888d348416ec2edfa16e73326b2ad5fcb75961b8419bfab3459c05c19c4. 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/67d9c104-f543-4709-974c-fc867d875b2c.json and https://artists.proofprofile.net/proofs/artist/67d9c104-f543-4709-974c-fc867d875b2c.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 0x5b11c786dbeb62ccb15cb873193a7648698df410c8d37101176c7772cbc97eb0. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/RUA591501107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d39f33c82e540ba6eb995455cfe2cfc14a3aef1cdab0c03619c51b55a99da72. 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/RUA591601090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf761e6482f65e0c4e3027e545da00eede1d1e4c251519feddd22d531d3f956a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/RUZ231800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eae3d660e537c9274ccad62a1cce69ed54314221e1d376c3968c44ae65865f. 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/RUZ231900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae55df92d8a3508c45a57777b277299a4d4e03e62f4888cad4bca01035547cac. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/RUA592000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca8fcbb0544dfa56cce4ff2693cdd56aa737dd9ec7dbd095379930a579b399e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUA592000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e0bda96278e2e6d95acb0bd18426fcaac8d8ee00971c2cc8706a72cd3621d7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUA592000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d015a2bd2f2c8f9f5ac890ef92ba65004f6cbd5219219c9e990d9112d80f25a. 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/RUA592000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99b519e8a5bdc251fd760d9d8322123546f514af88bc82419ee94e42012e9bc. 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/RUA592000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc169c4b66b8afb872508fda11587895f748803b676d7946346e570a18fefb10f. 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/RUA591801444.
Ты моей никогда не будешь - Cover Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d56d3163a86f55f49abd9f434e9d72c873eb2a43250891b030766afda23b8. 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/RUA592000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829519f830287bf6cf22037c5b6bc95412d5c5e911eff9ed93278feb220fc4f4. 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/RUA582001610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0813439090f37c5535d4ad922d7050514c5a632265103ca1b50e646f2ad362. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/RUA582100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7808fab6c3854167dcc1aa94eb076b86b36330e9650c5d869a00a0a750a403b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/RUA582105067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931af87fb2a7fbbb62d289fdd924a220896737b6b428acba2187a6cce0c63fc1. 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/RUAGV2301224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd485f8f8496ea3223ba9c3e104bb76d2408e132ee662260be653d80eb880f07e. 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/RUAGT2363020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23559fb25028913d4a6cf9555860b573c958d03b34126f02e702a1b8fe8dc9fe. 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/RUAGV2406358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa541aa695087ac25d7cb6a448b3c363749a1b9d7a75e8c652b27c74d60a22d09. 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/RUAGV2409172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23559fb25028913d4a6cf9555860b573c958d03b34126f02e702a1b8fe8dc9fe. 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/RUAGV2406358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33de7e9ad880fd6b00392af1cb0fed9b4c3c3315aa7f665c42926e76b1a1bc89. 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/RUAGV2409173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832e716c76b89f87b7125199434ca7b59fe797cf69414263fbcb0a775f1cecbc. 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/RUAGV2404862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867b5987b2d19e4c0984e7aec1daf66aea99e82f346ec29c4967ac1a5347be8c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/RUA582106386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe288f53b9d2e7c412af2de0c114c3cc7f036a2ef9de3bcde8825776a0b8c38e. 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/RUAGT2487017.