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 0x834ad51ce03ffa37164142202151db074e6426e6c55096b8cd89f6a9cc9aa424. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1df8c137-a2c6-4bab-9462-51ae0bcbb775.json and https://artists.proofprofile.net/proofs/artist/1df8c137-a2c6-4bab-9462-51ae0bcbb775.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 0x4cbe33dbfbf85c8bfae036c610aff65e7ad76a414c67bf69f8bdffa5b95dbbe1. 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/USUYG1174603.
Fe Ciega (feat. Matiah Chinaski & DJ Pérez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c56ae40639a4f36b39fe492ef448f1393ff91d3c95f71e28c8834b7bb6fe551. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USUYG1174611.
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 0x7f316556121819e5f14212f689eb26f19b0dc93ac0cf8ccc7e31365791e65064. 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/USUYG1122929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ed49d44ae8a25d9d5d1aa9723bed73f290175c47015df3dad80fea5ec38403. 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/USUYG1122925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c9a0f3c643cd54e59b307ef6fc2e35af33c432458c64ed31e7b08e95435bfb. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USUYG1122931.
Desierto Florido (feat. Promaabro, Angelo Soliloquio & TanatosLakactus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a318123822579c2fd2220292265ec3c2492c221790e61f61d64c226cd9a9f46. 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/USUYG1303417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda61c8ce15e2cdcc47517dd91091eb080596b56cbf11579da38b71ec2d758f05. 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/USUYG1283817.
Como Siempre (Revolution) [feat. Judubre]
3er Tiempo (feat. Ruzica Flores & Judubre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d46a3c482d2645dcf68e67d5fc0895f9ab9f3ed42dbb6676d606014f54e79c4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USUYG1192782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c39fef031494e7f396600dbab02b01ff71470ce80d6b4dfb2cea0a2c1c189d0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USUYG1192775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372b6a962225520637fb8c4c6b388160464fa58c34611244c61e12c0d1a393ba. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USUYG1192777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceea985af47b6a53555b4d50e3692308b6ea2267a8593982d26d5175537db06a. 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/ES71G1825308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8f40298957644bcb5d9124636fa09803209cb3aabd61c01a4979b6087ea8f3. 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/ES71G1825309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb194bf9359d2ff7e79964387dc819ba70fd4132bb42dbc461497a3c1159ed501. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G1825311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06d79d095c30be838d2b47667c321480236bc602d22d81f174db5e9b3581e7d. 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/ES71G1825312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc867565e8c047965235b9189603f6ed6d7c98eff8c84104ee49c4e918d53275e. 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/ES71G1825315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a316cab800048c2cb094f8d71492cecde94e563592308d5f9f082a327e78c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G1825318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3db22719a445a5166ad66bcea6dd50e3cee754748fee486b0ad4ff601774e74. 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/ES71G1825324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e73197bd54f4f00d69ca494d904add9fedcbcc8e51d2cce5923f18bee9ebd49. 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/USUYG1713830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4179797cdf1088824f0cf8fbf7300877a0681bc0374906bd1f4507f52d3d2943. 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/USUYG1713834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b88ff2bc285b68c6983b85ac8ad1b2a78aa8a109f3ac4777ad5fc289296710. 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/USUYG1713835.
Estación Terminal (feat. Angelo Soliloquio & Otreum) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972effe4e0ff0815da0e93f9dc2287a58c2d2809c5da06373e7e803961fe5374. 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/USUYG1713837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37eff9a084d24198e7ade810b7e43507094a041e68ca2845203df3de4366284. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USUYG1713831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb282ad24ad85ebb512b4cf2db16242f2b05ef49886918c3caeb6462fa6ebc760. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USUYG1713832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce2ebe28f5efd62f56673bafd73f91b55f4e880170cfcbe7ab8807bd0c69e78. 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/USUYG1713836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aedde4ec60b94c07e423ff77024407c08e06e51151468ceb0d934562e8d6865. 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/USUYG1585331.
Falla En La Matrix (feat. Ruzica Flores)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455372eff0115153366b152d12ca5e759a2655f7a1de68d50be43bd5b20f96fd. 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/USUYG1585338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8cad46f6927503b6c8be39dd3ae10f46ef23258bf0d5a6c7f97d9e66602c6a. 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/USUYG1585330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ef293587035065dfa2abd8de3623ec640b7a9b03e6a2fcd36208a10f3b97d6. 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/USUYG1585332.
Sin Freno Ni Falla (feat. Elversorriega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4028589607d2f096e630d754236f02a3f0b0a88f2edc12c3dcc08dbba7e6fb. 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/USUYG1585333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b39f7a9274b516f617354aee495d69b76e40b42912df793c3cec2cba6f29167. 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/USUYG1585334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcdfe7809276f7db1280ca7925d6edefe286c988d70bea7c14007172601eca4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USUYG1585335.
Carta Desde La Luna (feat. Proyecto Alunizaje)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a437b4fb74c5d8f2ada572aaf69542b5e96ccf7f93ffa735022da70f6ab99d. 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/USUYG1585336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307a8f61746064bbdaf473e4d631df13a022417e434c3f4c71585970a24733b1. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USUYG1585337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38181e910598044d307a552ade630c949384c206f5495ce89d36867e242da366. 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/QZNJY2384000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e416b80bd2a375263a32d880cece1994584113428238788639dde4d42d5272. 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/QZGLS2324200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7272a48ae914368a94f81e565b765c39fcfdab447410f1e68495c90e3b49a7. 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/QZGLS2324203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d785f9269e350d4d181b1413fd0b84979ca467bb302953139d8b0c674cb927a. 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/QZGLS2324194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b5cbf58b03c6c78f5c021e7e2a9b03d3493124b026f7fb3dc18f24e79e2508. 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/QZHZ52003643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ced3bfc85fbc7b2e80344759255f806e703222af6551110f10eb31ef9407b3. 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/QZK6N2032265.