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 0xc3e739dd95831428b68af17885d2c2001bca0e0e497523200fd4982e31150858. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cf0c619-b228-4766-a47c-6abeaf9f749b.json and https://artists.proofprofile.net/proofs/artist/9cf0c619-b228-4766-a47c-6abeaf9f749b.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 0x5256263238a1695681ef57769bf6ed3df8b79475afe5e0c5fd9615a07ec5e17c. 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/USDY41736323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5a150d3b3280c2454f00a426e9367e950ac2dfe43debdc1b38d0e08dfbf58. 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/USDY41736326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41af0e043ef5bd383939ef14fc25846bec70237988f266b339fd87deb7f1490e. 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/USDY41736327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134e0dbbb3480d477ff1bf984227cf1bc1d65e2a51ac3a0b14a9d61e604f265d. 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/USDY41736329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41848235b60cfb52468f97d1aca6fce527a88fc617374296a0c3c0c1de83280. 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/USDY41736331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef13f7090f30ac8172dee4bad7f15e5d40ae448efccda710510f5a522b5a4f2. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USDY41736314.
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 0xd62f43994cd94421764efb675a080fc111a8f9c9efb3c419623388a49d4e36ab. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USDY41736328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1863417e8221eebb841d3be45d96d730062212d5b3f9eb90b19a601dc621e3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USDY41736330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae2506efd04ea0cb66617a7f6247eee859f2dc6958d5e4b6b7c519243686bc0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81081865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259db60599532b2262391f32652f371831218b8c5ccd8c0ae930f203147b995a. 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/USHM81081866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fe77f9c4b5c80b70fefe4982c80a6bb7c392e56a4daa5715330ce39af3f683. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81081867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf767af495b3cc0e1c72b5da356c29a0b3195d66f24163e96bcb0ea34dc39d956. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81081870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7bafc9605672b9c09ec5505d63be4f744eee373ee0497d42afdcc205acf026. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM81081872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b395c521962ce9f2bc17e289f51ef3876a2b1d8fc80f6cfbc3ea681d80c4b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM81081863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7d618c8702b05c34082365f6ce5c2dcc43a43f09a14e743caf50f023d1509b. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/USHM81081864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b57336328ef2589aa0e913c68ecba7abc8a08541b153ab754f70fd503767f89. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USHM81081868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec1626bae37f3a486c4577eb5f82253fd6579520dd6c5da841bc6ba551b5d39. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USHM81081871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df3249003a8b9fc4b10f1c0e11b96795f6886ccd29aeb73b69c992c5a631695. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USHM81081873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe611e533aaabadbe3db54fcfd89b1e1c8c6321f2a588790dff2272c09ba72b0c. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USHM81081874.
Embrace the Sun - Lion Music Japan Benefit Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5d0ccd1333a7b6e39b792027de024c457bc4a06305ef7c1e445f48dab9cbba. 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/USHM21117046.