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 0xa2095196757c55a8973aa3dbae43c1df3132a793035b802a67d494402722c1df. 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/60aa180d-8297-43f1-8e1f-a4555c1c88a8.json and https://artists.proofprofile.net/proofs/artist/60aa180d-8297-43f1-8e1f-a4555c1c88a8.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 0x34bad82c7f85288ff23cd35c558d6a27f3cc6ba4fb18e9df066b3ffae2324647. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6MZ1964625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2aad360a81087a09e959af9cf420f7a7debfdc27d5f9b581bd7be4e959b04d9. 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/QM4TX1735743.
Selección de Cullaguadas: Vete Ya, Embrujo de Amor, Te Arrepentirás
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09662d85946e0f360a302e9e47ec5f536d8a955a9532da8dc61ae6cb860a2552. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TX1735744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299e7f2011c632697d0d0bdf691578a25813a311863ed8b5d029dc162fb39745. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TX1735746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db497e4e169f1b84d359cc490cefda2de0f3eccf32c4df5883132682445c1c0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6N21999570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd122f095d3f1f3aedd0d4661236198ad966f706dfb32dd9375cc81b8db8b0690. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6N21999571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bc3ecf70bcb885ac4a8ba10a48e292789a6182036857201e0030f06dd57365. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QM6N21999572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5d57cb64745298947f1402370dbc90fb9534fd9fdc1049bca89122327b62fb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6N21999576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d56a32dabff9c1a74f1f3945344171ad0346ff82937353b416a4e059638a795. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6N21999577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7891cdb6c8d6c4b742e38bb6cca75a873b58c43391adf699e78c4d068cb242. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:40Z), 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/QM6N21999578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b22ad2359b6eece9fa4504f9a544364b91dd372bc4c3876f17d75f24b71a47c. 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/QM6P41901534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f4cbfbd77dc7129f8ef93edaf1189d9f877bef11a1526af7b36951de6c1d5f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6P41901535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2dca572ac5d428ef265f59cf7e6d5aeb7c4895b4e1965425b055cb10fd2e79. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QM6P41901536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976cd767a522c7b19c4f6417d26d5e4f7b05ab4ff91a2a9a36236496b3cff28d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6P41901537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca20fbc428e4f3b444dc0c8f35afa098c08f97882c0c5dc2b639fc27f0256ee. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:38Z), 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/QM6P41901539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d9d0e54d47383ab3cd5c777f32e72284516666eca0ca701650c970af376a93. 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/QM6P41901540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec87058b2b829dc7a39657c761dce9804ba8dadb8b848142da2f08c6f0feca5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6P41901541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6331923170dbfd27e2fb7af99881ef2c1fd2bb24f852f5a578ceea74f90a6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6P41901542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a308a7eaf8117a6195e83a099d9db60afec1c43ea2efa642a732009333dea02. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM6P41901543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1827e8bc137a0a4e29a3caf9c54e8f1d8c42d701bc9996dfbc7f32b4a12c08a2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6P41901544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6960c00a05b07b595fe395e8d66ec2865083bee4afa9957a49aca0640e77b2a7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6P41901547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa267ddcca2b4a1fe8e2ef5defa7246ca38289c41e9b5ed02f904f5d8e272c3b3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:28Z), 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/QM6P41901548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139483f3af2e46a84750e1f728918c8293b4e05a774159eac921a17b047974df. 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/QM6MZ1986080.