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 0x2719c8d902600b01c3b19e634ab976957d35756d8d9e9e15b741495b5470d267. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43be549d-a783-4f4f-bbf7-135dbaea9e96.json and https://artists.proofprofile.net/proofs/artist/43be549d-a783-4f4f-bbf7-135dbaea9e96.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 0xb8df80eec1fffd70c6717223574dd7943cf83e73ee8ea6041a2c07b0c6d2bf9f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCAEN1990578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed958e49dfd736fc186f629873d3189a886915ae4013cfa0815ae011e02fdb1. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/TCAEN1990633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5871aa7ef18a848e5e829d78350760194cfd981c00a5863cd3147be7d3b8f0. 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/TCAEN1990606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e24f6fbc5eb6ed04ce878ab25316d33d776288b1c8b6787c0ca1a12d1c7a9a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TCAEN1990645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530935ebebf26480b4c0dc2cffbe549a3a6fd898c0a8345d0b48ae9fd000e656. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/TCAEN1990678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0a76d83ec0b329863e25656d547960be28cf396e36ffc74af20d2419c82ef6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCAEN1990666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7468d68882b9f14f6f1b89d426a615381b1a1c3b47597e1edea22186a502cfd. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCAEN1990624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5393d97a08fee4a797c7f3bf3152099f8c8653153d2963bb894c369ee54ec79c. 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/TCAEN1990628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b61c94639a422cb6cf57aca3a4263c51ecdb8542a29f63b6762558be42033a8. 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/TCACY1711800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0705519c123974652ae877e3b8e50f336ab0a977934bb69143dd3c836cefcc3f. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCACY1711811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00faeabb04ea49ace4f35aa1c741a5704eb7d458cfe47300ec5b8624c16ee2d. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TCACY1711652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92391e1cbcddef12be7b3e649675c69c895e20ab4c6cc7fe53595f0c3c7a24d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCACY1711654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3acc215260cc5d00dd87b61f00892f5dea8b5e300f1523d65dd734abcce5d3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAGF2220449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3103acbb38f4c261419ba25eb3378fe058a9e9338e24c398a7d52b3083c6077b. 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/TCAFJ2184771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65cb5cb9bae0585c7821e7790bb48d6f45a4be041c573ec10431a39fa4e9d66. 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/TCAEJ1975071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7f1ae531bc8b709f4c25c30f10567cbafffd693f6316b179b7d08b63128ce0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM81796577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be2e47261b99f7175bf30437a50e27fb93175dc1cdb7f7d8e86248d7ff82f43. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QM6P42424398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ca50c5eed9ee9932fad505924b55d70f23860282fd2a10ce061d78c8a9782f. 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/QZHNB1964516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceff4d4a97204f07606adcf97129ccea0d3da399d39627c55c937254a3e6c05d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHNB1964517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e65a6c752c75c25c63cf43336180b309ce10d50a0b3a1dc489f80da9abe0161. 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/QZHNB1964518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2111ac445f13b8bff2bddbdee5c143b74716f77b1a6692c82ddf3597ebb42d53. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZHNB1964519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ebe1c567b14cd85d1bce3b14f9844478207f495a738070644cd4c4bb3bb5c0. 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/QZHNB1964520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94afd6f4ff51178058e8a47c765dac3968cbe274b2a23308bc2ce013f66432e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNB1964521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191ab83e1af74b131d5e0c8443db42399d65f2d5dfc1a9a608348c8c5e84c335. 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/QZHNB1964524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009cb2887ba6f0fd350b402ff5aef72115f17887bfc0189a616b57428d9e2c66. 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/QZHNB1964525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f92592592ef3be035d26b95725446de0d12d002fc5be3e7ebaedd7b5da5507a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHNB1964527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f3a1091f3f4238e754e6615300fcfa22be3d96db4069809d15c21d090b5cb. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZHNB1964528.
Battle #2 (DNA & K-Shine vs. Geechi Gotti & Rum Nitty) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cacbfdf86bd700b8786f8b7d1c817e5c2e9ec6d87d6717ace02818014a48be. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZ99L1907502.
Battle #3 (Charlie Clips & Goodz vs. Hitman Holla & John John da Don) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e86183dbe234bbae2c1e4b340ddac900d6aee51f8f741611852e564cf6720. 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/QZ99L1907503.
Battle #4 (Loaded Lux & Hollow da Don vs. Tay Roc & Chess) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d2c5d7fd3f9e702b8a4ad73f2dd038be36cd68b27ec740dbd5b4f2d7fc25c7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZ99L1907504.
Battle #5 (Nu Jerzey Twork & Shotgun Suge vs. Marvwon & Quest Mcody) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb394044c3bb91e54c65c2baadf2d46541bbfd11fb7cbc5bd1a02a63e9813334. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZ99L1907505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb162b25d36035bb6ecd9123952fa4eb67a3612ed9e45cb81b6a50c4af0b5a24e. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZ99L2131901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a6fcaa4186a14702413c864e34db0b4c699730a741fd0fdc4d1e9a138ad57e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZ99L2131904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5446d1f0f27ee36b8c4a4adf62dcfd8f86fb07d0a447d3521478af269a25748. 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/QZ99L2131905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe970f30cb77e7b570598cce998f534327a9b8b277052cf055fe0c0402b63190. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB42347927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5165066c3f93c21b3432866864e78806f86d2dbfefd52d9f07df3f49ca7dfb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZFZ42419281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7b662634f046082e7b90a60a002aee0e9489cb8da3efcdfd54bf289372abd. 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/QZHN82238670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd111c80e991e65206bec0dbd1d9efbec11e7fbef978ca80e4f6c701d41f8a22. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/QZHN82235713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09988448e94bc66844ada810cd915a5ef642379234814e06b362049f76fdf0e4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZ99L2131701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51cce9bab0f3c9223a7bee1c8a862a8bbcca9dd1dfcd62983a26bf9eae98ffa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ99L2131703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b277f6f51db59961886da2bf0e1d8f27b1fbedfc8745ef224fcabae604c53. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZ99L2131706.