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 0xad2e26c6f38d6cac49a46f9b39b320a9faf018ec05c8e50a519f239375fa5068. 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/940c34bb-4385-469b-9d13-e12f131d1e9a.json and https://artists.proofprofile.net/proofs/artist/940c34bb-4385-469b-9d13-e12f131d1e9a.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 0x55239c3a420860483cd481680278fd0a5fb5cac85b18197ef46fa35629790d57. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QM6P41801781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7324b390c497b53de4c9e3c543953b01e8e574a4c22657c36d56aaae5f953be3. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QM6N21942535.
Popurrí Ranchero (Mi Ranchito, Ojos Negros, Que Casualidad)
Popurrí Ranchero Mi Ranchito // Ojos Negros // Que Casualidad (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0f410889b0795071e7d3df70e3d853a7fc8569579a9a588c0f743237e891f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZDFP1922115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9ea16ffc203fc5346730c7dfbc06bb644a3231a84eab96075d91d08c39fd93. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZDQH2154951.
Popurrí Arremangado (Arriba Tónichi/ Los Diablos Fuera/ El Tecorucho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4d07c12e8965c60629c5852318f85ac6d6ef8c6c1ecbf30a6e8ed904d34065. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZV7A2200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35310ff33852c25acc841313f17e9b5e1b714ea18e4dcae42332468b78017ff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFME1968122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4e3d06a9eb84832da8c9cf34c5897bb906460fd9c7df1c1e7f2adfb33d2de2. 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/QZV7A2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cfc79caaa15368527452dd70877a484c5c3a61592334bde77b3310550e9f94. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT4C62500466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d4df0d7fdec4e72c0efd240569189dbfd2e0e04dbe1bdc82271a11764773a6. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZDQH2516127.
Experto En Fracasos (No Le Tengas Compasión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af6caf760147f807c31d6403f00530ee4d9daa95a675a5ec5be7d2914517531. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZDQH2518533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3531d07439c2a69ea612ec75588c1f2fba8bb65ca88ce89f493035f3929b21de. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZDQH2518557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8722a266c32d27038234463603b318e8c0912f11621f8ee911d1a0052966af2d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDQH2518552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d47e357e7536994121023b5de9342a55e8af05ddf91645c27aa4fe7c00da07. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZDQH2518551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08688a8ba0755fda628d873f0b6e2c304d22bee1dfa4fe802d9ac7ec89a589cb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDQH2518548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec6965a37bfeeb430bb21717781f57f89c9d22b33fef54a7cebdf300a1fd0e. 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/QZV7A2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a3d58caa7fa9d65af9eaf1c28a42335280d85d8b0f29e4493838719de075d5. 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/QZV7A2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d5b2b377198ad563dbd6f737bae1599d8694a237765dfcd8350e90ce31022. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USHM22031268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc930ca458cfe17278bbf348cfc47fdd4d5df2cb7b86f7125c3a5275f914b11a4. 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/USHM22031269.
Banda Rancho Viejo De Julio Aramburo La Bandononona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca337110af5cf5d3214878b463f909a8de4312bcf9e1a5567497ead9ac49c5c1. 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/QZDQH2417152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8599e63abcc68801aa2153b66506ac0f948bd76505b126d218c4390e31441283. 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/QZDQH2411069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27197b3b3eaf7d878a593b7fb37bfe815aaea7786f1af6f1feb148b7203ab02. 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/QM6DC2074148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd830284872b9a3ed5e307e7852c2f79ac990e7b4e05b49eaf5cee785d811bd84. 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/QM6DC2074149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d08a962ee92906e097759ecb4f6f16f009bb17b232380f448fedf6e6c81040d. 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/QM6DC2073928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79743a03274531c0a4a2df8d950b86c41420b417297121bddbbb9fc01e014711. 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/QM6DC2073929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3500471d990c2f2ece594e2cb4e3c9816efa9a84e2ff8b7f0ca50f1c9e085ccd. 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/QM6DC2073939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170d2657dc2e780089b149d50c03c0bf3c063a211a98bf10dfac3a15c694cd12. 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/FRX762395735.