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 0xc792472152038597a26cdc2708af098e7de658827c76d78899fd6deb247bdefe. 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/d6bdb1b7-0dc6-4f63-9f0f-efd4822394c7.json and https://artists.proofprofile.net/proofs/artist/d6bdb1b7-0dc6-4f63-9f0f-efd4822394c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Surprise-partie à Cuba (feat. Vincent Casino et son orchestre) [Mono Version]
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 0x2a7e3b462ae890a7d8cf644bc6e83bd6a2d4c6c076ade64e9e1f4290aa013e1c. 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/USCGJ0709532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47559438edff796cc908ba5411def578417dd1d82b527abf273fc2d3b93cc877. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGJ0709539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48350d78f886f2fa66896c153fad70b343a047617b06364b7f99543e7a21e994. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USCGJ0709529.
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 0x2540d6b45ead0f55c6f337fbb0b9b1caad599296e7370fe10cc195f81c3a76b6. 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/USCGJ0709530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a032bbc229b2e07a3a6376aecae01241a95854647c53870890f8b8fc4dcb3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USCGJ0709531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5046b9535035e803e01c3e776ac77a4179fb75688de1b638a06e7682dad45e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USCGJ0709533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a724e978149e28ccf49b0e41cbc5480fa0c5f51ee50b272957fa77fe47692b8. 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/USCGJ0709537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7bb0ebc80ffb2fb95999f1d29ea4d33301d3c5003fae1a2224bf2c1088007. 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/USNA19710222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee5038d749eaf06b83a912b0d87ec28d6107c1548bfd87fc05faa4de7ff93fc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:25:15Z), 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/USNA19710224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ea13144833dbc05f5437678ee44af0c77dec73902df15342cc7149c6d0a59. 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/USNA19710226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd573086407240a9adec61597ef2860690f490c063711cd00e422b41b2f9bd5d3. 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/USNA19710232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be47f5e0295eb81e7d1fb9530c6052aab66d2670c63bb1710c97f7b82049e00. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USNA19710233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db1e393dc4ee8c82bdd06f5433e2944e1dcc66466b0981e11d1ab5a98925801. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USNA19815246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d9447776c323227881a50962b1f88926c6855edcb5c0186aa7b0617d28ab89. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USNA19815248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f255988dbd072a5e3c45a3e336803f57bac5b0a4e99a6b63dcabe249cfd3cd. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:20:25Z), 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/USNA19815250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8599b6557fe2c009d3d6f6f3b978ca379cb5cc7d3c640e901a4205eb4183afd6. 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/USNA10017230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af573b1bb0825a8f2dbda0fbfb3a252773f6658d5019d7855a389f4cedd224b. 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/USNA10017232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a194ad5e1c440089f832a82450b7c11c8db57dd3ef82cf94e034adc5e0feddc. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:44:47Z), 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/USNA10219056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925ebc29007b199ea30c879820228baae0ca3a17c6936bfaa985e9d857fc587c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:23:54Z), 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/USNA10219058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9209f78b0950a3cc4629eb297ce6413bbcf24a3edd13950822306b18a5d821c8. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USNA10219066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb7f3d23cab9c00ab76102e11860113711da9e647340dd4d66dd341d083ec79. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USNA10320027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d7e2f28b0d8c71538e29c6ac82d81a58bb5203b0372fb61837e4af2e33cbf8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:06:58Z), 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/USNA10320036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215a5ac285dbf76c2e7b33ef8bb62c697bb7f323cd528e3e45823f35294c7ab7. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:18:10Z), 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/TCACB1433268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a2b5e7bf506433ab0863eb0dbc0d17b6b6f7f5e3dfb3a3fbe8618976e43fd7. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCACB1433287.