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 0xdb23d3b6f6776424b814963dd6caea2b469f91045e65dc07f2e095905310850e. 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/a5db16ee-148a-4fe7-a813-2b1fd368b3b3.json and https://artists.proofprofile.net/proofs/artist/a5db16ee-148a-4fe7-a813-2b1fd368b3b3.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 0x4713a28a584760418afb3d5913d05fd23303c7b249427766dcb889081209906f. 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/ZZA0P2405229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f9657e078c79ec64aa6a0d4b81b426668baae0a69f88569ead713b33e8e06a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZA0P2405230.
HELLA DOPE (feat. icecream drum, Leellamarz, White Punk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5698c3d0666bc34341df2407ac90e49521fb8adb692adba75c1b58c8303bfa70. 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/ZZA0P2405231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6687e7639a60afaf79201c3465556073097f09194fe266f941513cbe70ddf1. 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/ZZA0P2405232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0e570bd5fa2fc39347f1671dee7fbd0519878f6f641292642364c1ba6a7d6c. 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/ZZA0P2405233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457aebda79e7105112a1c4acd7d8fc496eba4be05790d344b149e686fef2b94a. 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/ZZA0P2405234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042ad65b39ab38b4bf637f8e9ce2253e498648df9a100f3f4b5752df990cee4e. 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/ZZA0P2405235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0602c57d2249f185bfd46fb49c01685d18271fb568446d546e778336e6467c. 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/ZZA0P2405236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deec91ef2de0c0eb964fe0b1009cfbfec0cc508cd86f254d57c25640f19894d. 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/ZZA0P2405237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f976dec58867b41ab6eeadaa7b00b38bba35c64c808d47757f330adef15f748. 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/ZZA0P2407919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b98bc20ced6f90d364ad84689c22912e3ea1189326867dd28fadfe9f9fd34. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZA0P2407920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe382c11bb9b1838ccdf479bf4754306c832072a0f84a93fcf69b071bff7deae5. 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/ZZA0P2407921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbc14aa8353aabb1c0cb9c602801e28e4daf3a20dde6340937af7a8b19b6406. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZA0P2407922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6db0266ad8f57c32db3e8685cf529ff2fa470ba95a0072114739a65c56fdae6. 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/ZZA0P2407923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d0b479855c0f34241174ce99fb5d151f1902495cecc03cee1b05d2e9e12313. 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/ZZA0P2407924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1a5d7f6166c370f5cb79c50014201a2af0b4545eb79ad6dec296225669351b. 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/ZZA0P2407925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4be450594d80f6ff641d8a8c708ffe9d8b2726ec2f9c5e18a45fd75c7553c5a. 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/ZZA0P2407926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc322ba4501104a26d2813fbcd06761ae34662803900c5fa78b5383fde1d3bcf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZA0P2407927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0273ed1416ae24cbedb434b4d7babeb47fde634323e22800bd8a1c9458031cf9. 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/ZZA0P2407928.