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 0x2afb50818116b53bba40bcfc1b696aca9e93c9b47b600b8abdd6ed0306b5448a. 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/8ab32c3b-0288-4590-85e1-aa995564f629.json and https://artists.proofprofile.net/proofs/artist/8ab32c3b-0288-4590-85e1-aa995564f629.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 0x97061429dcab4a5ec033321c23364c2b38fd080988022518b9242251359403db. 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/FRX282585472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc006388441dd756234d8c2ceeb417210103a2be4fbb88525d8fc9205ae6a7259. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX452070519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac316335b8855c6d58bb2b14e6df3c6d9dd33d93f7c4f72c35852c115da3881. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR96X2035148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46ec44e9a39aeb28eeb9c3919e8bda9c799f403d2f83ce4e12abb2c38553a81. 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/DGA052002825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f0a483183113b6ba84d65bd272f0bb6c996e3738cbc1f67042c73bd969b24d. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/FR59R2121131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4017896d185c6537b1aeb9125f2e988e4eed45c5deda43356238f871893cc81. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FRX872118986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01096aafca26126508b4b65ef893e833caa41127550f36faa8a1e03b9aebf044. 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/FR2X42234789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed81456aab657366f6bf6bc831a9e924bfdd3cbee7d44edaf2e62bf216c148ae. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR59R2239653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8e7de389dcfad978a81741950195550bbd188b856885960803c9d75f90c2e3. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/RUB732032937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cc0916e33652300031b769a570b74034706abc0c5e0a7bb543924da926b9a8. 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/RUB732043093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390b3eb0a86a7610bc2c1c5028c587e88e09a9a74e2bc1476e0ef49e508aa4d0. 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/FR10S2316748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec8071443f8a8fc7d8c224f97389d1a8c4fbbca7ac76ecefde4c25a399e7bda. 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/FR10S2317327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fbc5d088f7f1c292f1e0ba74b063a65174b77736cd1428bbed6b4d1d9f8c82. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/FR10S2310563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe435b30745294559396e938152b9af0567b07b20a22f5e944b85d5ad90ee494d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR10S2310569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07a0d6050ebc2e125911f5d87ff279891e071c5c7301d659254fda85e8e7eea. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/RUB732046349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbc82d7021b49db45483cb77c58ff8b62dd451e32d9a2fa2bfab6f319a01351. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX452370254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d17b2c1c5f3b60eca30d08834e49c5bec184d068b3cd1e9c334ca52d68f7546. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DGA052312187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4cd65ae443790737fad6e7698c6b7ba50e27f98cfbe76cfbbbb6c3bb65aee7. 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/DGA0H2387143.
А я не буду говорить (DJ KALASHNIKOFF Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34a333e3900c49fa174d487c4c1b30dd47a48c4b8f12ce0fa470c2418e39660. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DGA0R2450084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6cbb9e92f428ee07ed86d59843063b105525ee5dfd6f26f3c591856ec84326. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DGA0T2441579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26808eedc9680ba9c2d7122c09cc8d87f4f7339f966a10332672b8ca2b0f3353. 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/FR10S2520594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51676b98b96a0aeabdde11bcee50d6e2fd98a39d0c9b4842ca9f5949a5a775b1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUB732082290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae75ea286632e5d904903633af0a5986350b17fabcaa572e9fe34bc992da7f2. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/FR10S2571875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390b3eb0a86a7610bc2c1c5028c587e88e09a9a74e2bc1476e0ef49e508aa4d0. 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/FR10S2316748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8640d4fe951289d6293819eb858ed62d53fd000eeaff1eb281e7bd0bb1785ea. 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/FRX202557450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28bcc15e1a0aa5207909b997326682fb555fa4cf5e2c23cb5ea953bab6bdb3c. 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/FRX282571356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df7ae2412d1d00793bcd4218d07ec73037bc1431bf5897483e4487eff5ee403. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FRX282584531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0d4fe78781ae866b5ea8c63a167a30790fcd107808d825723472280b01d728. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRX202588579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d7e4b11010e616acf6753911e409e7183821489b71cd0e7c1b8f7a97656076. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282585476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77c0854dd2141ccdb77e43589df19ab5e545180ee498b45bf1cc4bc72996430. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FRX282591910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cf757053d37c1fbc81cd8d4e153aa1577b62c7e78676ceb0c579d3dade2353. 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/FRX282585544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeb66f26153880f99d1e1354f523e5d26aeeafa0b3787f909c190cab37c942c. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FRX762534370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265259ff364b3a8ea4c4695d44c59f74660906d7c1eb10ac5883a31ffadfb989. 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/FRX762566540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12f3719ff837b995e7be6604d606934cb0e69361baeba4c6f76e3d9a1e60858. 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/FRX872545595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88ade8b4cbea9d1e2e3625ea9a053e8b6c25498e43a09c5fe0ed758cf910be9. 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/FR2X42542880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12f3719ff837b995e7be6604d606934cb0e69361baeba4c6f76e3d9a1e60858. 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/FRX872545595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c91d9585afc42d3d1fe34d436c7c05c032b1d7821d5bcf3fd4f9837ecba80. 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/RUB732063411.