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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d66607ff169b6a7f1285985fffd7fd3d21d0f45e72fbd26502b85d4225d5e07. 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/4e5c9c16-b804-4868-b12c-87a5d265bafb.json and https://artists.proofprofile.net/proofs/artist/4e5c9c16-b804-4868-b12c-87a5d265bafb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc00484664240d6607e5ce26998131d97d2f623c7347724e44e7b8f7332ae645. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUA582105467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74011c1adba01e341e97465e47727dbaeda66ca8820b5f72d49afea8faf68ce7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/RUA582105484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd658ed363b2c6a11015dcb1fb3daee357c67fc353e49acef54225ba14a901d87. 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/RUA1D1706148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16496afa9f92de6237a2fe19909577dac8c752671fdcfbec86cde72a7d4d94ab. 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/RUA582102678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a8f2d82ebc1a8ea62e72a0364db39ca07a36896f45ba5119e243eb572377f9. 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/RUA582102676.
Чернобыль. Зона отчуждения (Оригинальный саундтрек)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1e58a7b1e4ce20ae46ef6795fbc89c5927e4825f5a2f2922d918de8f9526c1. 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/RUA582103658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4f13f7d9db3ab72347d408784dc7747788faaf015395e449f981bc6862d5a9. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:16Z), 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/RUA582104168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aae001b342aef52a82b9633cbd36435889893466443dcf1023799a1f32614a6. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/RUA582104172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5439841317f4cbe0586d331915cbfe59d439d79253da0b6829140af719800ddc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUA582104173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b28479a4bad899047c8556364956e0a49be4db8e846bc27b8ad5f060b77e871. 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/RUA582104175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba75da36bd46b7e013c1b392653023debe9d97c639919dce3ca2acd198a07e5. 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/RUA582104176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c4db256fbbcf62196d23a227da062253a5edd72203b328667d48c284f8fe29. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUA582104336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f39a2001132e6278faff19a619bdce31a6aa61c4cbee02342d2091b38212ba. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:35Z), 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/RUA582105589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13114523ffca616a51cc8745343cddf828682f92256d9ab0a41b5f3e06314952. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/RUA322200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276f57555c47029742fdbde6497781df77cf37153f5bbb4ed2cf3efa6c2dbc4f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUA1D2258035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05c3701514c9cb54544e060135ffb2a7e2c571812b38a6b520b55765e8275a0. 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/RUA322203530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02b979a7aedd98ecf81b2e154b348b6dfb7721540dd319d53fec65e86985506. 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/RUAGV2303642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc9571b5088127dec0d5979b15756ea8ed8241720b2d8df4a1d448232ef2630. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/RUAGV2305099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05c3701514c9cb54544e060135ffb2a7e2c571812b38a6b520b55765e8275a0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/RUA322203530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872c8bd4ee462e6d52cb8002d1024a9f2f3e0e3532a71b08fac02eeca9c03027. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUAGV2305100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2141642f272855cfb3ac442b575b70d3d555b7437f3f4703d0096e190bddae. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUA322200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57668d83288eb0a07b8dd1d0ac6428f4f14652e350f9523351fa74498b19eac. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/RUAGV2301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952fd75c38fcc7cdb4301a869e4b35d3bcc884027df4d6c3f8f5d6c5c282397c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:00Z), 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/RUAGV2305102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf44d84122534c9bbdd3e66aa48c1350abc057aa64831d703e22503dbe056d72. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:41Z), 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/RUAGV2305103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a1c1b86e55614bea94fa37db9cd7c6ad6e0f76231f9d198983505fdd95e04b. 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/RUAGV2305104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb5a90887862b9b33ed17692c58e1fabb9b533d7bf6049826a4302072c6d89e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/RUAGV2305105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b897a385a8788ebe51fa6a173db8b93793de16742ce3e588af65f95c563fb8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGV2305106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dcfba52160794e101bc9d432047848e9238bea301b63c9e7e0e8ddae79dc9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/RUB422104133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf28f31166938387ec9156184f366532393ae6e4eca488316fc40a163fd0f67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X1601636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfa88f453835c672f0a3eb52674e36ac5e05dd1db7c31417b69201d749897e0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX762161760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b9f37042af83ee67dcd79d227c46504671968b0c3d5fdbb72ba35df544c89a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2540666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd775aa46755d011a5eedf40b9d1953828be4983312c7db7723d7cb4e2b05cf31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUA322204588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e79d1926d7a6f161fc18e74c0d09782f5d3908a46efc726245685486b9aaedb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUB421801666.