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 0x2262ea9f603012017f5c1a6ccd88485416cd104dfb7f5f1e6cfe36b2009aec66. 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/e54bbac0-7d39-4c5d-b224-d2385ed261a3.json and https://artists.proofprofile.net/proofs/artist/e54bbac0-7d39-4c5d-b224-d2385ed261a3.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 0x37de2c1d378212a0e7c2d7c81e2a13f1380eda532c7e6cffea492270223d9750. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/US5S30900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ffdace51753821836a61367b0a517fa78ac511b94e3753dcf8c140594e4280. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US5S31000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38a7bf69fcf2124b698a5ba2870636affa70ad056a6a7068d5fefd74678aeaf. 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/US5S31000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa7f2c76463fce245cea5f0fb074b701bc86740f70a550832f1a7cae5eb8e2. 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/USBMS1350029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309e50dc623f4c47a894970aadbc61cc37f369d7a3cd5566a78320698bb2868. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM4TX1965795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7872d5cb7f77b7844aa762f651d10e0efafb48cbc08dc7b4dbc0e5a6f69183f4. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QM4TW2213627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e0c697a84b14b9ec6a2826ddedbf8065e0dbb84cee0bffd168229459c0268f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QM4TW2213621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b94d655fc0a4c0bb8b6293770d28150ed3e6e83106c71e7532597f0dd4c7d26. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QM4TW2230952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb173600912d3fe2ea7b950ea214f87f666887b5475cec31580a3a6478ce10b. 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/QM4TW2388160.
Homenaje a Los Hermanos Rosario (Popurri)
Homenaje a Los Hermanos Rosario - Popurri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3de43c45964d097aa2d51ab2a560e596774941e110fc77e005459b3e0f544e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QMFME2319973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d67595957b3978e3945eeb862680a84ee6834498c395db44ea401c8112354e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QMDA62419360.
Latino! Greatest Hits - 53 Latin Top Hits (Original Versions!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c546395400ff93b9c84a2e8bd3193dd8d8fe09f13a155130a9f64f950f7677d. 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/US5S30900042.
Alex Sensation & Friends "La Mega Mezcla"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f91ec067739593a15ae26d3e56adb78ee4d04e5bada706056362b0ca879ef2. 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/US5S30900092.