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 0x39ca4754e576411f18d7b61f6341934842a338fcfe964045bed96a218db70756. 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/bb2557b7-695b-44ec-a382-d60d6a0e9b2c.json and https://artists.proofprofile.net/proofs/artist/bb2557b7-695b-44ec-a382-d60d6a0e9b2c.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 0xe22f73ad84156e03bd381a5b01e7843d0e6a75924f7dfb93d97efbd371e9524c. 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/USHM81973657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb691d0e7cb4aef66560265d7f0f7f120199773ee7687476fe025b187897b0f68. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM81973659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675e7f71a9abc24ef2d5a50d7c1c59b8985c75e4726c28ad8f3f043003cb3a4e. 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/USHM91902054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9056280f3eccf9e9aa9f884fd6c8f8fc7789f267b5177c97d0d6c17b22348a74. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ2015728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67191c1f7befbd27952645ceaa12a0cbc74bf026a7ea966a6edd6069f5613713. 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/USHM22041707.
Si Tu Presencia Conmigo No Va / Todo / No Hay Otro Nombre (Cover)
Si Tu Presencia Conmigo No Va / Todo / No Hay Otro Nombre (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194fe77f9f5e7b97a2ff66d12a72e5834d9cd05ccd5323c7be44143745cf05e9. 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/USHM92275254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66e7904e8ca6f8270584e7189555c8f270e60c59aa2e6c70470e20515d82bd1. 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/USHM82282123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe896ef3cd0232a71f2b60bc1e4c02fb7df268d0fc1622d99e1897b083f9fef05. 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/USHM92123041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a9ccc87a6c15c9589f23b22fe628e4ed78ad3cf2a5248c1a494b333c2416f. 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/USHM92275255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d3c9ec9f1ac984f31242985773829d4fbe5938ce94eece9c66ba744a95e940. 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/USHM92275256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab141b438486052aba8bffac98db90f2e846f3ba44bc031a3f6aaf94442ed46. 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/USHM92275257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9513850b7fa70dda3634297205f2f84eb1f953d4960002e7b80be0c4a886de. 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/USHM92275258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9056280f3eccf9e9aa9f884fd6c8f8fc7789f267b5177c97d0d6c17b22348a74. 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/USCGJ2015728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b5657fc98092c757846b014420d0d06cfdec689dd57e5ee52a2a0a917b6877. 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/USHM92275259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5324530246ef1ef88929fed1bce9d954db9b14c3b76847afacc9dae7f5fa0e89. 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/USHM92275260.
Si Tu Presencia Conmigo No Va / Todo / No Hay Otro Nombre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1162a2e709a83ac96db7f1d4d44f08f62eb534ba419a0d0ee8fa81e543f4ad. 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/USHM92275261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426ad6895430288e0d0e78f0f23f436641e19896c21c7dac42ce5c03edf8f9ad. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM92275262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d253c2c01a9296a6c6a051ac9d8a04122f81ad9c8801598b3e9a7bcb219f8fa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZGLS2292208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbbd188c710db03fbb68dc30aba514a8f008c78ef51cfb5d4e600e72634adf. 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/QZGLS2292207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678f58503cab9218e45127c4a8afa38800e453d18dffd72a6f44d076901d0f5a. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/USHM92275263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2290d51e3c6de72c530c9bc0c3b3221e8ad13a2448a24680432805f6d74443ae. 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/USHM92275264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5683535f4dc9b3c4b433d7d0a02e6663b7de783c2637c1f4b6ee6c0eb101e89. 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/QZGLS2292216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ff53962d45315621b451cb4f1b9591bf2dc6187ef72f985b93ed8411d157c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZGLS2292212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7395ee847f5e0eabdf82b09c151fe44ed35ad486b9e69726f269ccc844f6d55d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZGLS2292214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd235f7cd1e8d0c890dd35f26f3388ad30a89e223416bbb53b433d7b13cc1ce4. 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/USHM92275265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56e1ff470330f84e846a007d36e5c822cd24c65efba4a153d9cf9be291ec998. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZGLS2292213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228fdd623dc8d73a15c0d78eaf42851457cdbc776a9c8634f77ddcfed5c00671. 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/USHM92275266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05797fcdd8abc24e3a8659cd1eeb1704e0eb11ee629ba1da41ba895e8c32fe39. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZGLS2292210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f99e09dcb45a0d7d0665483826000efe60516a9514f0a02c34b6e4015383de8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USHM81973663.
Medley: Alabaré / Alabad / Yo Siento Gozo / Pueblos Todos / Cuando Pienso en Lo Lindo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08968665a6d2adc9aaa07b3f9c1859a43969cdf63ef3d2c090168cac4cf1badc. 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/USL4R2364776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9984b650c5fcac866709be1017d5f31863dcc235cfccc04fad318a5070ecabb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USY242475726.