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 0xfd5613fd899676051d8a3b6bc282ee5a6d62098798d55f804c821e8b15f02aa8. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12908f53-77bf-4d36-bc0d-9e4bd6657445.json and https://artists.proofprofile.net/proofs/artist/12908f53-77bf-4d36-bc0d-9e4bd6657445.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 0xb07a7ee9e89e1fd34c4ad5c0fef160b29936186d590925de2d0bd6b4732af733. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBBFT0300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12375fe8a9ef31f456da0f2a97410eeebe2ee500ebdc8bbb92d5e74acbd2089. 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/USRDG1010232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3194c75ada558d4833226054d14758c7e3aca364235aaead49698caba0f26312. 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/CA5KR2082472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0cecd490776beba9a28ca58d6c6a94387c3a624484b34f06a1da7c0306dd78. 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/CA5KR2082474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac79460914dd40cbee06d2b22b29502a94f696d3917266e6ab34f20baa916510. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA5KR2082473.
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 0x48b9c436e05fc986a2c1752dbea825ce72c92f07f30e2b039b05b89fafb6280c. 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/CAM460400958.
Latin Music Special (Salsa, Reggaeton, Bachata, Merengue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652c76bb6ec660f0d8172ff2888f0fae8477652537c0ac27a38496fc57b43e9f. 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/GTA010700287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3aca1564e421eb68df113c98a42ce846f8903bf94fae9e4ca85d442251805c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GTA010700284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9c4d8c3010acdc87db2c238f19dae503760b73e758923f7dd794d6a1832039. 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/GTA010700266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c3d3f85de9c03329a09553158d8ba75a4a25430e0422b4328eb94b9d2ca194. 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/GTA010700274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005e48c422b8b5c29fa669bbe6bb6b609771815218513f8abdd394e50843f04. 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/GTA010700275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04747902504ec94a8cb7a8eca5f7b53b7a17df9a6d059c1cf333af6a3348b4. 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/GTA010700276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08e5393b82026d08341fd55d7e7d657bee7879d51047270a6e264271a8f3ec6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GTA010700282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685533b59d0f9a3bcb17ab60a7b8b6adb8d7d5a89ef9bfb7393fe03a94d33492. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GTA010700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100dffd13d9a58c0bee8cd8b5b2490926e5e983bd7e7a1ecea97fb341e41d9b. 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/GTA010700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe795af5cfc8893acbd12bfd15b7ba349dea46a1d335ae216aa7c31b0addd7f4f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GTA010700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fe02d755385ef30db12b12aaf772a12fa2c346fe6caac2e3e7c74fe138ee2e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GTA010700293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf41c09c6e84dae616323810d0bf95e3e88a7d5334d06d88aa264ef985d8cb8. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GTA010700280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ed2434c8a413e95f1a7ed1d0096009f14ac0a41092851880ef1178b7b8b059. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GTA010700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451c7fb8bb1cdfe855a47c718ffbe86fd76aa710d2c3d4aa8643cd4c74bbeab0. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GTA010700295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b306f05b54d08748985eb8a80506089023fc398c2fceec9003153188fc90cc. 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/GTA010700272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357b4692b43f80c8df4899301305b87c93c3c16fa011f59f95e508cadb8c6b09. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GTA010700281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850a3d06c83c239efa004ba41f08fcc0ffbb3ebd84edc0069375d1d0216a71f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GTA010700283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd438de7bbbb5323015aea400a90906a3c088c2a23f742b52e1c4639eb8c75dd7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GTA010700263.