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 0x9bf6c082eeedf375cc4480e00ea1162490d665c07a968a3f4f0b7cee29410c0d. 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/b40ba498-afc4-4f0e-ad26-3bd3c1f05847.json and https://artists.proofprofile.net/proofs/artist/b40ba498-afc4-4f0e-ad26-3bd3c1f05847.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 0x1b9684aba566c0a309ec7bb009f34d17421fe89664c23b25620133be05bcf2fe. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GB6ZW2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fe8a2bf78128ee0afb38501bcbdb76c3e9f3d41575010593e57a0dd952a554. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GB6ZW2200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106c49654e4bb0052ccaec1c5c03b4231539c0f76a4b125f2a522b4f05b59bf6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GB6ZW2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fe8a2bf78128ee0afb38501bcbdb76c3e9f3d41575010593e57a0dd952a554. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GB6ZW2200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda93a0d65608c92d0b820dedf9900807c211d79fa9ee6948555da140b51415e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GB6ZW2200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac4cebd0447320853c45c726176fb47e60cc06e84153ee783f5eac454b7f0fe. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GB6ZW2200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8235657b293060b710f589fd97271a5f0406a21f0903476745cf09f01024867b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GB6ZW2200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c5f646deda8c6c4991d63e8d443bbe07578b9585a6d963abcdef4cf64a0af4. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GB6ZW2200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbe37c3233ddd64143808eaa5f9c9d949a04a2c82950b18cf8e8b39d112d21a. 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/GB6ZW2200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d03edb321997e5354336f22638de18032686d63d9bd7389c5a771e92661fff. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GB6ZW2200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49288a6f369f57ce84ea4b20e0d903efec0f061abe2ca6cad47501abccfceba8. 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/GB6ZW2200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f38a18ef09caea5eafbd438020aeae5e2601b3885c92f3065dbb8db624e14fd. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/GB6ZW2200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c28507f4f28b497375c183e62971f893a595db023deb0b05c275030b4687d3b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/GB6ZW2200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc1360265dfd6602b56711a4ae29320e82ec7adcaa36fcd3a3a849e436e438. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GB6ZW2200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21ced9b734347aa0e413765a9a029380b9b7309fc474c55a4797bcda218c477. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/GB6ZW2200713.
Between the Lines (feat. Keyon Harrold & Sparkz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300e2c9a5d42b50362a62179562ec8d7d36182273dba49b4525dcba9dc0392c7. 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/GBARL1801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300e2c9a5d42b50362a62179562ec8d7d36182273dba49b4525dcba9dc0392c7. 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/GBARL1801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92366303d7cf438957c20c8c793a6f728a7d59bad260d97610d86b72776d23d1. 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/TCABN1392166.
Escape Music (feat. Dr Syntax, Sparkz & Kosyne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e948e20c6f9bf2c61b512b7809a78d2e1c3af7572f518dc54d32600aadbae8. 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/TCABN1392170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a801bb33336916d285ec4a4a5295323587e1ef51bb2301dc0c7d4043703b99. 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/TCABN1392172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0f464c467a70e7a79cf348bfdeec8de6204d7d60be7a6f75fb2acd3d44f323. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCABN1392180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327868b15eb0a7855f60b4397bc1c17d58b0e08f3833c504380478b0aadb4c42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCABN1392196.
Children of the Stars (feat. Sparkz & Dubbul O)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796fabc64f9b6548a03a2694233da423fb8ebac1d96253e6c6b111932d1470d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCABN1392235.
Raise Your Hands (feat. Dr. Syntax & Sparkz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38057b5d5b3d5101a2ea86786b4ca0e41c53a2c7924f8d7a5d1b8e0cf8984fb3. 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/TCABN1392237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6022847cf21ff2e312cc6d16001514a4a5903453a281fc80b9bfc9622e0cae. 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/TCABN1392238.
Never Get Enough (feat. Sparkz & Dubbul O)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc574b199abc382adde63ec4129a797551cb462060827f5efc9a5c7b0d370fd89. 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/TCABN1392239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4376da3c6b8a5c8604cdcac9600544fdfdbc8a8cddb98d7f61c08411d82d11eb. 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/TCADP1832625.
No Stoppin This (feat. Sparkz & Truthos Mufasa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3779a6f97f6e464e070782b06c1411b54d811851098330004473a1814c40d3. 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/TCACE1508418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a61abb883fd2bcd740e3e62ab47cdfa71f2cf89d287b56dc1fae46635e0652. 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/TCACE1508421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daed651ad0d4811acc9f9c54a90fdc5efd774d6ae75bc8dc8fea788a34cf472. 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/TCACE1508425.
Sip a Little Bit of Rum (feat. Sparkz & Fox)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a43d59d126010b38ba785cc49f532bc64ea8e5af81d1faaa6c941a24315325. 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/TCACE1508428.
Who's up Next (feat. Dr Syntax, Sparkz, Truthos Mufasa, Dubbul O & Cutterz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294fd870e68717f39c373a0282f61371f2892ae415693d7018b45ec523949281. 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/TCACE1508433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c029e70d28bf38325c956c76dd42199bb6db09b75a05a7587e9455b7659cec. 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/TCACE1508441.