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 0xae110f6b14b9aa27797c8943fc6828a051c264a6221497d58ffc63b9a65907d4. 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/0ea7e686-1733-42dc-af4d-3fb47f9ebb66.json and https://artists.proofprofile.net/proofs/artist/0ea7e686-1733-42dc-af4d-3fb47f9ebb66.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 0x5f26e27a9052341a8151f7ccf8aacce4322ddbfe53d20c3422fc99ad4dcf0585. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZDA61867900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ae0fc98de0936b9af6ec389d1a72eae298f76dd7b9569fc9ec79143b98f9d2. 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/QZDA61867901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd0374aa3f867905d6c675927019cc42fbd6004c26acd4aba678b2ae469c614. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZDA61867902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefadf82af2cf32ab4044b16cc4e2481fae3022c0f0ae3853abbb51a83c4ab7ba. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZDA61867903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a15d0994c56e1c3878cd79f218bdedd253cad2303fcb139901f5d90e83df6dd. 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/QZDA61867904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844cad278570614ac7bb23d590b2aaf238af551dfd051300a8a47382044f521f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZDA61867905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9737649a98beeba3adafc0f488394d54b3266ac87a6bebb93675225e7bb0bff3. 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/QZDA61867906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccaa2b467400e9ba9685573b2ffa981ff4835cd7f38170a61032aedfff25d36. 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/QZDA61867907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb369ad05ff585752699238d9d227ee9faa396fe89ea7ed9a7d78fc2b93833204. 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/QZDA61867908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c300c56b290bc69d0fa290e3e18ed50f23b6cc037e9a18492702402ac7aa404. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZDA61867909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7717d2732e99b4084996352752a9f9cc83a0594b4c668931b48056f31e1fc9a2. 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/QZDA61867910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a3a7c429688e421d4566059f03b1e67e28df036674d6904d7e6f1640da10f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZDA61867911.
En Vivo Desde Culiacan "Canciones Viejitas"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4581c394fd00acb9be3af3270d294c4a00a4c855e8cd946b4f097745865a1f1f. 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/QZMFV2000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f200b06602530b61391b9b5f1523745bac000b3eec5f7dfd1cdc362e08d70f7. 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/QM6MZ2226378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bdcb40a0e95ad77363be336a9c672f3fd0465a768b7893b85eafdb3d768fc4. 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/QM6N22276819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde2b1ed14b3af8f27ce1aa192ec67c47f14e319342943050319b95dbb57cace. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QMFMF2203373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3aa85afd611e38b0a2f7baa4b8bac3a2039758e75ac396b8a1e03df2aedf87. 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/QZDQH2398690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3669e98e9e61fc8f63cdfb22e3e2f39506574eabb82a33ddcfe7e0eea39cd945. 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/QZDQH2399591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82625ecaa3bd4fcc42992b902c01ff51d0668c8bdc9067b76fe127e90676dd65. 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/QMFME2490957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764454cbaf452324ad7745aeb646854695578734070ea30a47d03f423e95f81. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM4TX2509626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85142ba2f7ceca9f959620f8ed126ab67d066951d274df70a5c78561b82bc924. 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/QMFME2503550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23b9536cb03933adedb94d302cb1d5e5b10f5a429261d0da8bb8fa6622abf44. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/USANG2260700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea73e3687c0e40dde37e4ee7759cc561f3d0790bfedbbf071004690785c8e83. 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/QZDQH2360465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4515118ada48f3351cf2b7c410700e68346d6939a3d8a850974354c83178081. 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/QZDQH2360469.