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 0x7c6d2bc6f5a27f055bf501fcf8a92ef79057bcc7cab8bd6af2dfe5e4a990dd43. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be6ce4e0-5ffc-4651-9216-930a4e1263ab.json and https://artists.proofprofile.net/proofs/artist/be6ce4e0-5ffc-4651-9216-930a4e1263ab.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 0x7eca4c4b15da7bc344e62e228acc330622ac2a14b7e33e0e9e91fbae4b35247d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:27:56Z), 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/FR9W11616759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808d8f458a0a2aeba941c38d998d72891e719841f9405fa970c6e02b6bc5ed0e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:58:19Z), 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/FR9W11616760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8753689eb06a4156ef7a5ca0f23cf130b773e3231dfca6bceae588ad621ece. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:30Z), 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/FR9W11616763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cdf4eef28d266b112c6bd885e8a6b0acfb9600ea9cc8ad8b218d8930ffe717. 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/FR9W11616765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd925e15f44543b3bd4e776bdefcb784246b4ceaf1ffedfad337ff834752fac51. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR9W11616770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f99e0c071baad24357ea1f8c5294cccb4c90a30a17a2ca2849df4cedeb0c17. 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/FR9W11616772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b47d6ca72e6ceb4da3c9dbe976644cb031ddb1dc152b488179d8a79ba0791d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR9W11827385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef34af8bcb10a7cf0ce2d8633a12555969ac7b67972fc4c01a4ffb5deaf4e612. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH6542121299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c371861e225d2cfcb85152db4632e1dde4866fad6de69b522f439a08ebb17b. 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/FR9W12234779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d346a4fab17270291bb2a3a472dd5371223068d1ee97c8d16f8e307792491cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12234781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405b3cc98413ff1b55dfd8d3845b18e55063c7216190c1550c0d37553af98b0a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR9W12234783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30ece880a25bc116d0c299f10e8869916b89af79c93f8f94b530de04591514f. 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/FR9W12234785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061c21a3f81943c16991d4103497a8c3c77806de8c4c1384d962273cb37b8192. 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/FR9W12234789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a468d0b959974d86f7200353135c2bb0a41f51624312e1e96b3e092ceb9402. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W12234791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd07f6c70472161bef82636cd725cb45ba6a28ada9a35ab96266d216c18d15e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR9W12234782.
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 0x51cfd7c3f864f240b53c33eb499b295d3b27373df78d1866e51802eafa21ca9f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR9W12234780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf175f833d0637bdf0100dfec04cff1cb66c8ea1545c6a0f63d849997c5226ba1. 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/FR9W12234784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c63cb4e49faa7c42187a1fbb806c735f8505ceedd89ae18775a484a667f4607. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FR9W12234786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743a9d0c021f5909522d59f02d3a904e5a87d933cb5447e28facc5fbc020c77b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR9W12234787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46a440ae13ccaaba68af00f9aba273bb9482a4594a39767ea0c39f7244d9391. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR9W12234788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036c7dc1ec7132ae120eb492b50e13e740f615f143f51d354f9f4f2f470ed85d. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/FR9W12234790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb96991aa5a4e97d34af9ab1e78896df71864926ad83dad65c47642269148792. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR9W12234792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c8a27203ddae866591c0414bf200132a3f50fbb10c3d4500531e527683ccbe. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR9W12234793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f6c7d97d04c6c11efb60a25b42af38583ce3c77785bbb3875535faa5a44609. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR9W12234794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cdab3986b8c25170e47ada268e9be99e10068dcccfa1eae8a3360f971de057. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:43:54Z), 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/CH6542389688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861cf23f39dc48c4b7a49ef39a4a0024446a0b40a7ee0725d8745f7ff4958852. 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/CH6542404421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d67d14e6cb48491948a3e871dad217939d710691be25b674ac6d850ab8d2e2. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CH6542467283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365aa009858dff14aba4b3c3cd92defb6eb590a19d204967b444fdbbf63e5298. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FR9W12524451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed06f0afcc7338263121fe355cd8af9a8dbfae8fc5911f51a207bb06278568b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:06Z), 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/FR9W12524453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ef81b2c93faa5dc941a5916702db53595f529acde913930bc4a93d8b046bb2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:07Z), 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/FR9W12524454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9737b7a79cecddc83ad13eb8ab895f2bc2fb0b8dd685a0352987423fa2872f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:41Z), 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/CH6542567126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c82b96f20c6c13e52edecd1102b2983cd567312e6b0d87e6f23bd8832f981e8. 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/FR9W12364253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51459480ce7103c76cc9b7e47a77b11f30bb836acd97f83ee5bc141d59bc2368. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRPI32300072.
La cruauté tranquille du quotidien suffit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdfd030b59d8ff0e6b2fa006f4f66a8e186f1532585c1cbfc39a82c9ae0abe1. 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/FR5DN1100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb61b0265e82fe55fbc178c6ccaf409c22b3d9e68d797f4e6840752182b8414. 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/FR8GV1909350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0ddde962d591f55ad3b16355d5a3b8ec512320b3b4d1808fa2afcf78a9efad. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR8GV1907250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b50614b9967124a49cce1ef1c47fe90c42ce1bd080e337b5c68acf9023cd1e7. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:03:28Z), 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/FRPI32300079.