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 0x658994fdb897df5f784973600637035dbbd11af528659910aca95c73ed31e254. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7dfe8ab-e756-4896-bd91-bcab70d9b761.json and https://artists.proofprofile.net/proofs/artist/c7dfe8ab-e756-4896-bd91-bcab70d9b761.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 0x818fa1e2bcd4f60e67d2f028f19b7bfd33f978698fdf924329f03cdb15cb61a0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR2X41912094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a89917dd8fca9b0deb6c8859ed8f586c0ef7a9bec62950545895cc99e62909. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/FR96X1932619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c392261f037129d90cf3cd26483a0748ca94a4302352a9a217f2120ed2e697e. 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/FR96X1932622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0b881c15e096c788d9d88117a3d80703d646cd68af86f324cd507989f06ed3. 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/FR96X1932618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7234b13e51e0455fb5e497ab22e1353727eaa90ec45dd487c0cf2a6e9177f0fb. 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/FR96X1932620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be54b6dbae168929227d27a579c00486f8735f8e087d14927c58f8dc9da1fbc. 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/FR96X1932621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c392261f037129d90cf3cd26483a0748ca94a4302352a9a217f2120ed2e697e. 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/FR96X1932622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216530203aa07a70deb41b8048fadfc213cbe1701ab497a81696754606d437a4. 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/FR96X1932623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07c84a12832e6fd3a52b7a2fe481019f7b1577f2614ca49d7e4d8db05f2037d. 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/FR26V2042783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a140ab500f5af2a35ecdb14dea9d9c8aa5fe10345942a1f5f63ea96bb081e65. 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/FR26V2053930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6338f659b50c655d4d4ecfc765981f2787e2ee2ae3936fb8959039cf318b8715. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX282141093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30686a21eaf3fa79d68ceafc20cbba1ad0bd54541f67e374301b43c17e76ab03. 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/FRX282264532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cc0b63d6b2549084bd12456faf736c8144cb13e49ebabb00b6bc1cb9af71f8. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FRX762221181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0fd16b85603079bd0120512e4dc6b5bfbc80b8b55ff41442147d2f7f8c413b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FRX762221182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cf0d4e427d7a46aa9ace75400570ed065bfa6d6a0e8fe2019518c4b669d22b. 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/FR96X2241051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981a673f234677949de0768256e356dd1f67781171584f91f5e2aba11b09b29e. 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/FRX762221184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57045c6d1aa5628e031dbf1545bfb75b1ef994f71eed02856d9e0736670e1550. 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/FRX202247926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122b5a1024a1d43c5c608c9c70993bdb3195554e33aa926c07c4183fe054203. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FRX762221188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1ea6403f86296144d14b80ce330e722da20d44783555aa4b386246e1795e40. 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/DGA082203030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658d9c797ed55498b34321ec19234261a6429dc357d7ee92e21f82622cdc23fc. 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/SMRUS0074346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59de784776b9014f16618e905d6c16fe776801537391e5c27fd852ffdffa089a. 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/SMRUS0074510.
когда я засыпаю (prod. by fear magazine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec22c5dfaa02ed88910887b990d69dbdbf9e8d4a43fe56fd9827f36293fc6bc6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SMRUS0074995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff796e5a2d5dffe83ff559548cb5f4aea3f11f644e3d1c0a4ce57389605a0f5e. 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/SMRUS0075095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e32eafb26178a22bd106800ead0a323738925c46d6b81748e2f27ed6ae8b19e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/SMRUS0076658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9036cdb255153237f4eefe4796d972dc27a1582d5d6327a10252837350f91042. 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/SMRUS0076976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9209a6970289f70c38a0d9eab69a4c973ead817f9a3cfcf83e04ea5161f5d68. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SMRUS0077099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adf200318b704d3ea58ac28e696b78f6ed75103b3c0a7428b01000ee6acb03d. 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/SMRUS0077374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707dbb56f432af49a033bad3e7f37d6c72810ddcf032d4fb69cdc2832861ed22. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SMRUS0077590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70c088620868b9a56b0a653e9e8efe64fd90a530a36b6fe9fd2bc040c641e39. 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/SMRUS0078221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0294b54a9c5c78b4f6a6b8be6e1e512327ac026ec5af91bc41a766ef2995722e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUAGT2554160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3394c5e28802aa68d9a26edd50255c4b90a70e70d08786140595b2b540195fc0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/RUAGT2554162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29265bddc04f0bcfacac5e18686430b33f648590ddc786ba077809f69d02d48. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/RUAGT2554163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b622069403253aa8552c8b8649aceee67191e8bc36d6db8535c57978e15cbad. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUAGT2554164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa262467b5c520894e1805e66f8ca85a3fb273c310847f6e1dd86acff88c0eac1. 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/RUAGT2554165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169050b2bef2b1eb067d70eaaaf05433edf40bb70ecedf5104d4c3f2335e9582. 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/RUAGT2554166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066a4d57f518d4f8e75a0ec67dd11c183b2f1026a89b2761c53b0b6aa40fc7f6. 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/RUAGT2548828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff1ce5d49e2e3e097d80f9531ddf1649fe01245bdb9bfce8f0a455bcfe33aa5. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/RUAGT2554167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14790639354763aba753a4aa7bdde7e1e468c456d06342e8be1b5b4555a97578. 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/RUAGT2538330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf13729abb4444cfa35a20db8933392cf5e37ccf67b9a0e3e36bfd7d1b7e6b88. 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/RUAGT2554168.