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 0x2a8c5fdb8c91e7639f409812851ea78885e1ed647fd613a3edddeb036d6aaa07. 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/e1c7dbc8-26f4-42cb-bb20-2c41a574e8a4.json and https://artists.proofprofile.net/proofs/artist/e1c7dbc8-26f4-42cb-bb20-2c41a574e8a4.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 0x049fd51ec9d7e1e3337e96703915b33d34b223b33e78d0034f1c90b84e6b33cd. 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/USCGH1423832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7098bf953562f9346d3cb1eb05dabc7f6a921b99b051572d075494f7271a7e. 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/USCGH1423833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc9da008111eee034866c1611fac8725d356de43f654d9290e00a93cf2ffd0e. 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/USCGH1423836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60940f4c94d19db8cd035c0df7309dfab5b9b00450a4d09a872abf22f3e17a24. 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/USCGH1423840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb1a279ee85adb0bc91c7765ad2acc200424a39c20e0858c6d026aabb37764. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGH1423834.
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 0x5c3dc83d629fc091eb46044fcf91b701a3d597b99e662e933476e74087d97402. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USCGH1423835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b614755d0e682d00a2f4ecd190617531d6feb8e0e29bc6776b5074e9bb00b0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGH1423839.
Swervin & Servin (feat. Dominicci & Young C)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdff27e8619c40f239caeff4d7ea64c8e4fd6e25ca77dacc3b2cc4617ca1adb. 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/USCGH1535507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cef98a80dae5b74bd84a9702b9921a6cb5c1066e537fdaf8f4186b344ee1c0. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USCGH1535513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7232caedd977a3197a24c46ac7cf4734b9fdf92e883089e4185846ef243013de. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USHM21660459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6121baae2cba03dd25eea65c447af854d621dd690415a0b386975a7fe2983b01. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USL4Q1925307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e0307da3bd59172e3128c935fa00ebb4453f8f8adfe27be6494304943fc763. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USCGH2194021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafa439fc75e9ea3cddd9e8aac3cdf7b1d8f9901b945722b62cef4b188661f53. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USL4Q2050562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fec5ba266003d5ef7185ac4b12bb58bbb2ebee16afbca900288d50eecb8133. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USCGH2256326.
Cruise Control 2 (Slowed and Chopped) - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73932132c9c3f91b3477e3c8e55a677b00c8fef523c5c403317000a33e57007. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:38:02Z), 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/USCGJ2466589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5015b35639c2ebe3681b9e4a975163ec04e6fb70d6f035a6dff37d2ed43b88d5. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:40:50Z), 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/QZRP42528774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ef8c2bf0dea69bb109a5cadfc0d659fb10f4738c7af3eab8c8d3c1bf1b28ac. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:37:54Z), 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/QZWFG2523398.