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 0xdab36e344e783eddb6f60635695a360d3084b4606d4b1731382f8ef05bbc516a. 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/91945cd6-c173-4600-a469-40b6694fbc38.json and https://artists.proofprofile.net/proofs/artist/91945cd6-c173-4600-a469-40b6694fbc38.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 0xf5abb187ec5336a707c1f000b815d597fbbc1eb0a166cad9c6041cc871006d49. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRMIM2116330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a99b65757d930eb354869a24bebaa308774776c447cbf74222485494669730f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRMIM2121407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044a09468a2c2574ab69c7bfee274e9ea8ee05f6977620e5b980f977de9c675d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:01:13Z), 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/KRA382163482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6999a20e209ef6c5e408f426765ded113e3e78eeba04de2162c12a6e1e0bd01a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/KRA382205039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202b2b57f09f168e3d4966a8fbe8af66b510e73bd67791135401fb8e47e7bf3a. 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/KRA382209980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77902a1ad638ca01d8fbd0543ab3a63052a35d5a01ec0e8cedc8455f7fbcadea. 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/KRA382400455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb552b533a54ec782c414cbb1783cf10da49106749c7148e5e88c1f62d1f9cf. 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/KRA382301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75b986079bd060f6e3420749a424c582267facd84bc161b6d8e2ce4210e4dad. 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/KRA382301134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616c7944d3fbc0c8648e21a6afefb002c650bafa5a03c8170d4c1bc64ac5ed0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/KRA382301136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7427967901d8f34dc7211a5d09590d066009eefc985174e53750d22edcdef. 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/KRA382301135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9335de549ede230e1a224fcc83bbe93539108ebd8eb3d6c0c090d48dbbe26e95. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:53:37Z), 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/KRA382301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b956f0ac9585b8dc94f6e2972e93858375699651e0b4c089b5570618a2fa2c. 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/KSA012153817.
Back In My AREA (Feat. GGM LIL DRAGON, LIL GIMCHI, Skinny Brown, June One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb45512b033759435df247f7ea78622bbcf0a63b17394990897e9af433eab7c. 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/KRA382204409.
Finale (feat. Chin, Louie, SC4F, CK, LIL GIMCHI, MADII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac640feb534b4211f36d7483e8f03ec49eabe938b16232d9dcf6902aa0d5d2d9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:44:59Z), 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/ZZA0P2221742.
Spin The Block (Feat. Paul Blanco, 365LIT, LIL GIMCHI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a46323b45fbd28fe6ac37b3119ebd177021c6a44fcb86ba5c696b8e56c528a3. 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/KRE132200001.