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 0xc5b39abe60a776ec9ceb643afb432b7c90830ce1b5f7246ea01bdfc724f6c965. 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/cbe2d11f-8378-46bc-914c-73ac0904811e.json and https://artists.proofprofile.net/proofs/artist/cbe2d11f-8378-46bc-914c-73ac0904811e.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 0x5e13780f9636415cd08dc360d298eaf3891bb57309d84b7f4cee0056895216ea. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/COF019500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b03fc293c95ffb9e80aeb73aaaa5f6c951171d8eed9fffdcaba6bfcafaa6ab. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/COF018900450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6f4f44395d9f181db27d641b0d5b1e9c938f76f467e320fec271203aee5bf7. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/COF010000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c82c17a6113de066b80aa4b09faac5931cf3962c1decaec698cabecfb21c7e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/COF019804448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b8072352fc5509bad993a6dfab986cc7f831fb43367ce26d5f65eb871c1ac1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/COF019700996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9403353ce8b64a6bd6f038d0c0038da90e5623e7616c5b7699135a4dd6952d1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:11:50Z), 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/COF019000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff536027ac19b1db603a8c5b0b555e9893f65769a2acf216eda6caf8dc2a78. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/COF019300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f72427c26a7579cdddb945fe4247ecd93b53689246dfac00eba5e910a75a56. 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/COF019601816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf137e16317c62108c6f8e67ca96df97af16b296714d9b5f31bc961693a5a468c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/COF019900567.
Tina / Brinca la Cuerda / el Pompo / la Danza de la Chiva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cf2e6bc9de293ff29aa2d3d9f26c171870d452fbf43f2dfc31460017fd140d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/COF019900584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656de246105d1aee77432d40ea5ebb19a206eab2fd603382041424cc57c81a69. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/COF010000866.
Sal y Agua / Remolinos / Coquito de Agua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2786d2d41f144dbaab885604a77e5be9c05807f94a08a9d931cc0ec26698386a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/COF010008902.
La Suegra / la Secretaria / la Agarradera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590eb4a9dd3dac557d1dff773b3944a205cde6dc6bbcf6a72a81771da6b1a5e7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/COF010008949.
Parece Mentira / Qué Tontería / el Merecumbe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ca30001c5897dee2953a6e3c291c9649ccf378cba254bc12761bcc711c9237. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/COF010008958.
Swing The Mood / Rock Around The Clock / Wake Up Little Suzie / Hound Dog / Jail House Rock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c46b33253439ec9464ae19c459149e770147617b5ca99b2dbaa32b0d531df. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/COF010008966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444076d2630412e801ad4659ac09a61ee9ce1854ac21e0adfcfaee2ef6a4b64a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/COF010008967.
Cabeza de Hacha / Porque Lo Hiciste / Adiós, Adiós Corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090b8e0dc53712cfc3989cd77d559374de0210c399ec5cbf3ead5acb47d03dde. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:50Z), 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/COF010008971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc366a9ca05cecfdd4dd22b999f7097ad88495ce7b160d5b653a2a0a048275d7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/COF010002036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba046a9956aa75e239f69123c142bc6e8ddb6b7f853a498ea32f7b7e67d2972a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/COF010001912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece3c3b47647ba341689344fe0f4d90f0e37131acc89b81f2ee0903569adfbe5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/COF010002042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca6c66289bf047b882c5ba4feff157c639d2f1bbb315601bcfc1a85d69c25e7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/COF010002045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4f46595d6241d763b034854b2d6f64e33afac71b8c765d5b14e235c256f3c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/COF010001911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5114ead770842b3fc3f8d4073afdce8b03b1376bf24296b498c9c65bc6bda063. 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/COF019900568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248df082870f69076d39c001b8a4cff06bb6433a1aa93c8cf750cc4b28168959. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/COF019300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf579232cbdda5cc24e3b96970564022d65aafbc40312d75ffb021a1417d079b. 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/COF019300491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7905f60847679720f763754728ef356dbd8a019bb183f54e6ecca5f624d75b0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/COF019500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff536027ac19b1db603a8c5b0b555e9893f65769a2acf216eda6caf8dc2a78. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/COF019300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9403353ce8b64a6bd6f038d0c0038da90e5623e7616c5b7699135a4dd6952d1. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/COF019000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7905f60847679720f763754728ef356dbd8a019bb183f54e6ecca5f624d75b0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/COF019500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753a323f32ee26cfcdfa98c9fdda1031e74087ffd6cd8762d2412649c851d20a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:03:18Z), 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/COF019500154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae75f1faeffc6782b719781922bf0681863d3e14f7446ef16b61d6fba333c28c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:15:59Z), 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/COF019500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0db77abe751a151c818e3d289acab5f20f413c3a27bc11f54d6081935412a62. 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/COF019300492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ed85b24c1614e6193fac5508ea1e4de608afe86add97b82a687b8e2ac84730. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/COF019501578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8025db38d75fbd230c1c9057d4dd66b6ea01439d6e3efa8cf8a2d4bb30dca87d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/COF018804059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109f9361e689d64bdf55826bca1db4b2d5f430eea614337d4ea20fd14e4b468e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:32:19Z), 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/COF018804058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dbf2a4fcc7cb507169218d4f7116c51bdbb7a4deec843132286846da74347b. 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/COF018700283.
El Santo Cachón / Soka al Soko / Todo el Mundo Necesita un Beso / en Mi Pensamiento / Te Necesito / Bailando Bailando / Muñeca Linda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078d98c7f799050236ba66bdf08520b264f273b04dac8571fb323b35a1cd5ff1. 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/ES71G1815678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef06cd40fc0f926eba48ce437d7fdc888cdf4f48f10ec05408e4e2622d123df4. 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/COF019000358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7500f5e7ddcad728820aa2d42b14413ad3430c5d48169c1f82195935f59bbd51. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/MXD941808009.
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