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 0x18c3e5d3b6c5ee4eb1d720d5ef8ebd1e8b9d7cf39742ae48d515425a51347ef0. 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/545b2f88-a768-4949-967c-a606c52bd53d.json and https://artists.proofprofile.net/proofs/artist/545b2f88-a768-4949-967c-a606c52bd53d.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 0xa09b30aef323d046365c29b8e82f2ba394112f337e3b7a7ef7635a44d9dec0b3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BEIX82200246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993c0d942b0e677b0672213ad6bdadd0cbb472b6bca3c87370dec2a6057eaa88. 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/BEIX82200248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334eea4c1da6d955d7a8c619611c7083b3064c2c5feb3646829595b0feca0f16. 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/BEIX82200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8009b633b0209468c2ef91ec624aa58a3936cf560ff872612facc888ba5fa5a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BEIX82200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91fa7b773c1d50fce780175eccdd2c4f252eecd8c56149271b7ddeb2e99d10a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BEIX82200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2792f09abe3e3759ee36452aa93f597da2eb3a5b86b94ba365cc381ad1bcca0. 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/BEIX82200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e93387dfbb40981a33999032eeac90235aad02e58477167ceca04fc0047a84d. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/BEIX82200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346baaee8a957865640981f74ff64b7b5cea2f5bfd1b80a2155e4b2ca955ea23. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BEIX82200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b951a597e0d59a31566524f58711818710e93b307bac7bf835d58f5cd949721. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BEIX82200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa7267628ff9ce5af5bfb3bea96d35664596cae86403fdab777c6dcc270856f. 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/BEIX82200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f6ee863f9298750eb2f4183f037c6145286875e8736bbd79e0cda4ce58f504. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BEIX82200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e162f53e5a1831ca8ddcbca02bfe8cc0ec263847a94e57940b8ce0aa7c0ad4. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:32:47Z), 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/BEIX82200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141b7dde47806fd77cd6101d7ef1345b074e8c7080e2418bd6c98e49590d4a70. 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/NLZ8C2300608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78e73f9888abe4acd2f255a4cd5fb6a31ff483001ec9508d579f05f7574c04a. 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/NLZ8C2300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617ca5956247fdce893c3b7d640c0ad032552833e38d35daff987fa2156f2e23. 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/NLZ8C2300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2310d2f602a7deaa531f8a99b7e34a200ecc3a1cafb9ecbc0f0c05967765757. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLZ8C2300611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b93be57930d3afe3180d6ea7ec4869c664d56c4717a935e89e1e351bc27c999. 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/NLZ8C2300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee97975973a279748b63df142de731015ee8d61421782fa3954b757a2c40d4d. 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/NLZ8C2300614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ba200629aac97b38ca8ca9acb3f6798e3623ff1d37b070d0f373fb48cfe6e. 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/NLZ8C2300616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d721068d46d2608a8ecaad27cda716c59292ad58e87596bcaec101948c86bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLZ8C2300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcac54252582440143884630780e81b2a277105025d2bacd4da5200c6f45763. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BEIX82400568.
Summon the Spirit / Demon (feat. Voice Actor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620b37aa5996f74a68ac3c7747efc9a33a5362399692aa7865983f26fab9ab6c. 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/UKQNV2300141.