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 0xabf2c6a372e883d19b60b890943c0461013e69a6b912455c6ea0fae6fd9fe329. 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/a3f4a17f-91f6-4293-9352-68ab3d79aff9.json and https://artists.proofprofile.net/proofs/artist/a3f4a17f-91f6-4293-9352-68ab3d79aff9.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 0xa37ec97d7580ee3d9d35550651787b97c26dd5455041e52e11c88198a7a8a8ae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUB421901610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19611262822f2472ce056d226cdad42ccf783bada069820421881aee7759d058. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/RUB421902019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae80795ca1d26f53e06198f4f3fd01cfb1954b6cee65d8e3edbf6d2ed00432b. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/RUB422002592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba20a0fa123c495587f71f722cb99d14691a620b53f710ec64008e9d570f679. 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/RUB422101959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3002701d5266e95ea9ca84786a1bb1c904023259f991a4158c5cd475b8a38f52. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/RUB422104270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7658e832c96e0e4036fb0f28f8f6e46e69c3c6380271f5089645c81d7b4643. 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/RUB422201194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8437d8cada3326946775004d835af5a176222e3626c959ed5849ab38cf9f60da. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/RUB422201896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46881a0aec7c0046df2583630ae052d1264bdcfaa909c9ec4bc86a33c3249c4e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/RUB422201898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a86cad2bf648ade044c5d1275c202b74a14bd126eab321feae4925f98f3f50. 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/FR10S2466626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169f723782c96209136823ce01049faf2ca9ae0e9066a8f32269d712a1117ff. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FR10S2491643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90aa60d6af7fad6dfd10aadd4063785ee97fbf5065d2ed5c89402259c4566c9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUAGW2400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb4c16bed761a60af21ac72cbb7ffcf97332b0f37e9980b8c55a93e8b5eac72. 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/RUAGV2405773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812dd17dc1fda8abb42859cf743ec8da37e6ce57d8f3c2fbe328f9bc03f59752. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/RUAGV2407234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd487232d3bb331062ed24f8ccee6b6dd26a8e553f14f5f22acb78beafa7f669. 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/QZTVM2458569.
Проснулся В Темноте (GONE.Fludd Dance Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc267becbebbba7bee896090c4432b14462b5d4aac7b8c40c9b0435e4afc0f4c. 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/RUAH62416033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3451f87cbf3d7a3edb1e93ef77ea807b1f90ac93ee63289ad83a720c638e39c0. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/RUAGV2410952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f30552f0addf2f27a3df93bd6c14b6aceba5a43dee79b87512695165dddac07. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/RUB422504633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d8684bf8df9c39f8a75226c12e1dac5cd9927e47ab0fd89ce75ff64efd3264. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUAGV2501488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e5115a92bba41563db1ba1a5d1772e1aa69f75a67d1c56a3ea710f09895a57. 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/FR59R2564378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84642c8de3728aeb3deb4713e1920770fb66415e33c834922a72b944f9714ef3. 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/RUA1D2540007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8806960ea2b91f710e2197b94ea8274d1f6143cb29a3afce4e97eb11afe4b2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FRX202501210.
Последний выпускной (Harddope & FURSOV Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2267d18d6525f9e9975afa0bd8101830476c7192ad4dbcbc9082979f19338991. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/RUB422502322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe81b8c3e1d8e0374a380c563811b1013c9d9c91081962681e209ddd464aa7b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/RUAGV2510632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01273676297e4400334bf3709d22184f2323153c047b3b7200e3f3335c5aebf. 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/RUAGV2512308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0fe55370c23bf9d49d543c1223b08dbef7cf90bc1b322ca7df2a9d08daef9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/RUA582106630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96c979279acf5181bfcaaac22e6331df76e144e5e4292cfe815cc7284d3be6e. 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/RUA582105434.