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 0x287c4fd40278b89a7e4e1f4f630d277b43aa22a9a2f13def092663d4faf0b663. 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/44988ac2-09a9-46e3-9c0f-58f3d1be0ed7.json and https://artists.proofprofile.net/proofs/artist/44988ac2-09a9-46e3-9c0f-58f3d1be0ed7.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 0xc5553bd7676f7f72d181c3f9fd3b52ef29eed5a77813e49c155220de49f0b124. 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/US7VG2198836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25483cad355f405270fb9678f1ba7979631d242128ada717146518c26123e302. 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/BK4DA2454558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c86674338c173df9fb8ef011183edd2c3a2d96800c0f4ba00ab86abd7fcca. 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/SE6I32443838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a35215d9694738408553a4fa9e2d5ee9b25e440b9a38cf8a5c60d3d9539efc. 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/BK4DA2424794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ca4dd4271c9fcbc9d88e26858a524eba9b9e04e1e3db353b2e1de78a381762. 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/BK4DA2412759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c3f0c9cbb78f348f64c36f1f317db5912509effc2817b95955da24b9c1aaac. 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/BK4DA2409866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5037509ac7becba879ed8fe00362a8482fb4c323c3a1c2e0b4bf8ae34cc5c19a. 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/BK4DA2402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8574802897ec52b23f7c887f3c400aad7336f36869dae2450e0b7b51faea19f6. 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/BK4DA2319545.
Una en un Millón / Cositas Que Hacíamos / Será Que Nunca Le Sucedió
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eecc32650ba2f05b66e75b00b058cd301c554480a897a57a6157de02720a4d. 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/QZTPX2352310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233948c84eebf98e1d68a9f77ace1b6f63194d8b01e398637426b73847815680. 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/BK4DA2312712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ef037f2e2c49faafa73f26fcefb5001188a2837f534bd979f32e718834e228. 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/BK4DA2307543.
Más rica que ayer / Ella no es fácil / Llegó el lunes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf841fd15f5dcf9a071918c1c607e0f5c1e960320ffff83b08cce975a1775ee. 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/BK4DA2307447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa187b18a2af44470862f30a437aaa8f52241318dfda2d5ccc5cf22ae32f27787. 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/BK4DA2304835.
Déjate querer / Quién te cambió / Dime si eres feliz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82308c4ba7fa2987edc1c71d8a38090d529415485ce9fab3b83222f1ad951666. 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/BK4DA2304909.
Camila / Seguí la flecha / No pinto pajaritos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8391d80e46fe2fc2533c97c6e05f17f1b7a8f31b7aa2d1a144e04732af39c3ad. 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/BK4DA2301799.
Playa Del Inglés / Te Pintaron Pajaritos / Carla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7829324f1fe698b217ccc431b3407d5bfc3a5bd0054a841296fc6fb1bddece43. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BK4DA2300820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf523bf7214240f57106ebe610b6280ede3bb0df12004050172acdf1c53bf1b04. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BK4DA2300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7bc9865db37a8e60586b38b0a81ba73aea435bc521260e6ab8961c3a75d513. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZFYZ2316445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eec08a5b9fb01e21634df7dd0fc15dfe93d7976c9cb56a6908e0b7dfda981bf. 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/BK4DA2215199.
Si Te La Encuentras Por Ahí / Mañana Que Haremos / Loquita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e25a9a2ceb4cb26803b78091b47ac4ab7f013a522ba98cd89dfa0ed1be60a5. 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/BK4DA2214066.
Marisola / Re loco / Si voy al bajo soy yo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0c266d3840812ce295a85453c785d89366679f61525f7ef8892060016e8e84. 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/BK4DA2202801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55972ffe9c002779adb5e15ee4b29ad1e2e6af565b8048ffc308aa803cfa03a5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZZOPM2238908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdded60b203562af3c7d82ab1266eb2068160c6e8c3b4ce4ae640941b78d4f126. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ZZOPM2236810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c833526c3f91e673379f9a250fc3a7cafb1280e2734283ab02e0ea383a601f2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHN32215632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df77973c8430e0b721f2362fcfa0050050590099e20155565ec12ace3112496. 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/QZTAS2186539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45297acec242f2939cd9e17d111c483ca185ee11185adada8533e050d3c1b264. 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/ZZOPM2113521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150046d2126fcbc450b76d3f22df43bf72e22321ed89c8db606039948d601e21. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ZZOPM2110991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf8997f367a4f7471294b171b515a9d30a212db6a8b3830f58faa63c7bdaf85. 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/ZZOPM2107130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995be1df5d7191f9148296bfc97b431aae37266731699eea6597618119fad3b2. 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/QZHZ52118727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7253c3ec9ed83d6f6876ac7551be73a49d43fbcc4ae13ff78d89df317bd9143. 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/QZMEP2096612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ea903d107b8f53527e2b6c1769caf0bfb03896d62c2536fd6cd95365d0d06. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BK4DA2214945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09310b66c5732e3ffc62ef970a0a0cf71089ceac3826f81b6de519c530de95b4. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZHZ42125263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbce9bfe7e63f0e148ca517af65ad84e4734f6d2af6f4b5f4b6e465f88b2046. 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/QZGLM2124719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05caab800bfb91e66e274043e4035c8a5f4d0c522e674f37da06522c5337602a. 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/QZPLS2006379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76324eac47e1bd324c6d0b858c0e628616b8656d4d460ee9ecd5294887af6e54. 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/QZNWS2086121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc6c11cc88dca98cc355562c60abc711389ddb330c56e71f567ac52755608e6. 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/GBSMU8252549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b51943a78631e5ffb71ba41be678f9486b53805fa51aeafc187d2a43b9d7e2. 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/UYM122003581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b657380073f3f42a447da913c0ded42096b5510e040bb5c88b7b93c938f604. 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/QZNWR2059036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de739142f17263bafc472f4be0c0a2cc9216d16059bc096d331cc92b2b3bab. 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/QZK6N2278873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8c5cfb397384453cf24d46e8cac22d78d12e108d59c59a8ac4fe377a001e66. 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/USCGH2433853.