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 0x7098d4b7fe4813a84a03977c85a36e39f5b9a81598249d8b183d271b17c8dc37. 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/0558c507-dadc-4ebe-bc3c-81eaf32a5f7e.json and https://artists.proofprofile.net/proofs/artist/0558c507-dadc-4ebe-bc3c-81eaf32a5f7e.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 0xa1b82f34e92c83d6bc8a4644296aef4009f7ab24860a93149bc2e79c8825b68a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLV61930640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455876ef2cf765f74154ccef89b4a897e6f0a4883a977f1137fcbd8441ff1018. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBLV61930642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9564760270e47bef4b127cc644b3b053b621f7c9967fecea28767eda77bbaded. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBLV61930644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3966bae6a1291394962fa30625b494ccb259c7d2034e92ea537cc4e19709bd39. 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/UKXN22234734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc5f8be98c76d9037625c347ca34500b4f3cb6a115c2008cd75a3680b4c79b5. 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/GX3Q92388995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2027bb5f3fd72130d60ace1fc638a044f80b7bb5bfe77cd63253e8df25c8f905. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GBLFP2314287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4977e06b3fe4f6d705cb24fb1db5c6858c3332534fdbbd7f54b745baeef865c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBLFP2323323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37b985821d569fb8c2c61a5e207256ed371ef8b01c264b2e9905123e7318026. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/GBLFP2328538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf1a905cbbb224ed9d13e69ba51a92d494a69dd1afd637fef676760f3a1c92d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAHO2319472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3966bae6a1291394962fa30625b494ccb259c7d2034e92ea537cc4e19709bd39. 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/UKXN22234734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbaf828212e1fda6738af1f8655e3e6693dc26f547b74ad5787c351b1d2891c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHO2382297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3012de5d436319a8c3cfa5c3067987c25231cf4d007a97303f5a89678a35ed6. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GX3Q92139522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52536f1657bce79c242f95fdece7567d19687f7ccca80484a8739c3d9bdb47ec. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBKQU2079184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276d61cc9d636f4d4963501740194176ea790f13130d0650b77ca029e8c19244. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLV62007659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820b95a283563cfee4f9510a16ac2530a4ac0fdf16fe2b0c18e67224cdf0a0a1. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBLV62007656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2a95ae79b7415fb856aa5951a3b377517b18543b50b58eb7f88243b94fc1a5. 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/GBLV62007655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5862ff16804bc0745482abbf495f55193a01c50f0bb44a20749da1a1966ed6e5. 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/GBKQU2079183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884a2615f7ff699c9efc0e8d221d81990025da1e9c3ccf257bf0155d16e7868c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAIW2447808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc084a16e25504bc4f69927bb0218eee129dc249957b0f35037195cf837b737a. 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/GBLFP2259599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cde0b2d8f8ef9a79cfa316aaa31d657fe3bf750636705e2352f0940840f0f4a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBLFP2241205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075df807c9e19137f9202869fd7d269e5fc817d8847cf4fa44e7bcdf10e83998. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJA2450558.
Opera of Lust & The Art of Sorrow, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9381bcc928c65dfd5bd99db2449811b977c5e8109c295cf63138b0820cfdc3. 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/FR96X2414561.
Nothing But... Electronica Revisited, Vol. 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0fc6c459ff65209ecf967a690977705073c8c9189488274e3ad1e6359df5cd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBKQU2079181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f00b9071e8fbfe674daba89270b9ccdf877a498296d893f5b7685fbf304060. 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/FR9W12436068.