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 0x5afb3660c472aedf32b5744513306f7e30f5446276fb295d406de81d9cedb98a. 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/683a0cb7-05a6-43d6-b564-b7259c65a0f9.json and https://artists.proofprofile.net/proofs/artist/683a0cb7-05a6-43d6-b564-b7259c65a0f9.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 0x75159c30afa808a1dc7cc7218c2b8f42b640f7818ab8cd4dec488e175314c256. 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/USTB10607344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3923ec20485b4538d7133468ba2f37fc5cfc3d373ee20c7815d178540141c7c. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/USTB10400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3061154a592736876c1f45ed4752d38bb43b0710bb04290471e1a6f393a65432. 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/USTB10400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6aa739d8a21a80b7bd2bcf4ba823fc28f7241dfb05a54ff08a0679bc319a14. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USTB10300955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2467e6e4629b3e52f10b81fddd38e8289357445d9aea7616f91a5bc25c9df2a4. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USTB10400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce532a98b97cd2fd2f4f62b8839077edcb6785b8506f6f7d5c127a349cb2c3dd. 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/USWB10505140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb48ee73d815188a9dfa2a1e58e20bfcabbce69929c4f54304f70309ea06c97. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USTB10300898.
For Lovers and Others: Force M.D.'s Greatest Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43836891275c944856080c11572d882aacf73b095f3ec72d1d89f7571cc3e38. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USTB10300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515a1e83e4e0b7468e2d01565589d6bbd0c1e02131fdfcea2c42ba1c4c7155a2. 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/USTB10300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91db9b249fbba8b88e8b48582a227e48b20c7700b121d986c961f8ed9612b10f. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USTB10300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43836891275c944856080c11572d882aacf73b095f3ec72d1d89f7571cc3e38. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USTB10300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70930b361ec4252abb805b186e445e0208eeea5ba9522a32c74892e952e8672d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM6XS1601515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70930b361ec4252abb805b186e445e0208eeea5ba9522a32c74892e952e8672d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM6XS1601515.
Let Me Love You - Remastered 12" Vocal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5078ff580057903bc8f1a4ea2ab579c38775d3a9e5000ec7784c910890d0df2f. 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/USTB10500060.
...And You Don't Stop - A Celebration of 50 Years of Hip Hop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12cb5961a32b44366fcf1410a373bce5a28638b5e4e634681cf18146ba744d4. 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/USTB12300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1bac19ff136fd443f0cc4d98e7da52e9849428b7b6f34d0d618651648313f1. 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/USTB12300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67e7bac2d362a1b769fa5a6ac25b963e998a58cd48ee0878c6d0958ac6653f7. 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/USWB11402462.
Jive Time Sucker - From "House Party" Soundtrack
House Party (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96941bfa67d55b9836123d67f98b28d24a15e695097564ca64612e4432f0df01. 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/USMO10500078.