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 0x2075500e7ad169100218f39f46d2dfaf7cd364640ef1d4af6f86427e10a00d8a. 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/b8b3494b-ff4a-4ffb-9375-f9f47e81a2b3.json and https://artists.proofprofile.net/proofs/artist/b8b3494b-ff4a-4ffb-9375-f9f47e81a2b3.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 0x5bec9d5c7ddaea5a9ec7b1650712b16fb26f10e5a108551523e217aa98eb66d6. 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/QZFZ62285013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5339dbb0fcd87eb7fdbd0570a296608b19fe3c84010d1ececc16e89a7b1683fa. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ62152058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca273e205dc1d9f07a098dfa64bf650b46ec0f39c7409b0425e9e4167d2e1df. 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/QZES52144335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbe36cd0c6ac960f35455bac701ea051135417367788b6a5bd4a58fa0982214. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZES52195792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9599cff21978db25341af93428b4a44fcb6612edfb13b45eb8022a4ecd31eff1. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZHN32180489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541842538e497af46ee608744e0dd653b68e21d068e5c57321fc9e762babb288. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZHN72114198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d1bf2bcb5acdacd3644fb1db0bd6ab909527ae38a6f9124776dfe2c3c8a76. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:08:20Z), 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/QZRP52124654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d6568ed02d0bd6909cb30bbbb4087171eb5af493db1f312caebf47fbba5770. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:22Z), 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/QZFYX2226296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9237742fe32cd6d5af4393f335e1b75f875bca95d83b7ba64044d601e0b8085f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ62207410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b0b07f6ebfab0d17a8f8ba4fbf73b5596700b29e54c2534789ea00aa9e6c42. 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/QZFZ62284155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7892db35db054865e8be193899f64aae2f59abb98992896aa72218aa566b26. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZRP52206336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb21a0a65c25f917d8e63a6acce2d54aca174094fc0fd7f1e51bae5d3baf50f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:19:42Z), 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/QZTB52244480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504c72cf4ceef5e9f69001fbbf77e0bdb8c3f89ddd9ae159207c91b4fbe4d92f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZDA62304091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38d46b52483ff41835fab7a3a49b209f3992aa90449f113b483364ed15c14e2. 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/QZES52344849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717702e7030f6de87147f0cfdda382b164ca089794324d1e9cfa3d10d48f5ce2. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZES52369246.
Single Mom (Ano Ngayon Kong Single Mom Ka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3100e126604909f2f7f20f82bd701e17d7b45299f82d38120eb7c8ad5858ace1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTBD2323333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1c8c1bc08b7c2c5f4b5955d3a7911712fea5b9259d7e5c4c36154af43c8440. 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/QZWFP2376147.