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 0x4223d8f34b834b2d1c1dc86407dc0a05307d1ba0df3b28158dcabbf8e7014fec. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56f800b7-66cd-43ac-ad23-dbc533936853.json and https://artists.proofprofile.net/proofs/artist/56f800b7-66cd-43ac-ad23-dbc533936853.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Epiosde : Farewell (The Remastered Deluxe Edition)
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 0x8bba7d36409327de3e86a6ae930a45f15e9e62cd3ca05f5c8b5ff5bfdbf105bd. 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/BRD9I1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7d04467d7a55732c30dc806de0e6d74457909aa271daec1d5ea5bb56efea01. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BRD9I1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59f0e83ca0f8ed4dc1b35e310c555114ce9062f47c19b63c2169bc32decf787. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRD9I1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e11fb827fb32af3aa5fd3893478976a5edb068970acb1935bdb1152770ce69. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRG8O1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e03608e996b4c43254f7cdd08d96c303e250b47844b1d951e4c8781db9bcbd. 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/BRF0O1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b894f0a8d77bfd24188e34d4fcf9e71a16eaa21e2f113328e5c174d814383. 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/ARHXW2302800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a575a3da7016699c60322d06ca672a74e489d6e3a94a2721fb2de932c8368c3. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ARHXW2301779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20a78162937a999a27ece79cba511ab023b221584bcd3fcc466b80c02a45583. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/AROAJ1700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e7e2d2265470eb16d44872c2f2a3d98d49f2cd6b26d3a3fb0f684cb2896f75. 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/AROAJ1700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7f104f4e45fa7196398e44419de28d92e0443e062df0f5742d4b08b2b02048. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/AROAJ1700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f874010c45f734b17cd046fbeaa579a11cf3c47aa7f87f67eba840ad3bd0b6. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/AROAJ1700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2675d2e2e472f3b4902d776e994c02998165734f57efd16dc9984cf8ee1c7740. 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/AROAJ1700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a583feb19a9f431ff124157668342b7e7f59fc4e9fe08e69f8bcee8c5c8769. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/AROAJ1700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56e25130d9ba76dd2bbdd7d2246446d68a1478caf9eec7ae08c0fa66e72deeb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/AROAJ1700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436024f2e4fc4b9568a41d66aa2a2ebd26c4d7d2c658583981ce24093f0814eb. 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/AROAJ1700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ba574d54641617c1b8bc72c3d2d51a559b51024973868ba78c0401ff3339e7. 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/AROAJ1700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc8302ca00de52e28c78b7cb792cbf4a84b30bf6912b5cf93536f9db8f7f382. 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/BRF0O1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a282f3ccb558697fede7db906bf12116aa0ea5d61157987c638deb368ce0045. 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/BRF0O2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9386bc01183ac3ef606589972c25d7e1d182819eae0081d768692be840dd4d6f. 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/BRF0O2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db057cbe022cffb4565d955059a79b96a9c048ceb333ead822790ffb46611e2. 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/BRLVK0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb81e657ddd5a5387fa06e74c7c0dcf87146ce5acae6bc111dd1a8531260ef2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRLVK0800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815965e3efd7797ad7da525c1e7856ac2ecfd2633084798016ff318d3ec56e60. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BRLVK0800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e8f350d46ab4f1fc9b7033b927917840f702e6bacecbce8ecf9ce0780b9362. 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/BRLVK0800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61365d11554e45bebfffd70ed711223c13874457808bc505a62c572950a44bdc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRLVK0800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34df9212ab3e5c33409d7c1ec11b780eeaff30012abd4300f26b98a41f7e98de. 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/ARK541200001.
Tanto Amor: Canções de Ivan Lins, Vol. 1