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 0xf35cb10e38d45c950568c96bf0396612c7bb897ab63c1ca8dd4fca79ee958a5b. 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/3b545771-5678-4ebf-a300-ce788b580f7d.json and https://artists.proofprofile.net/proofs/artist/3b545771-5678-4ebf-a300-ce788b580f7d.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 0x49410d1785db06320bf68d0d08ce0c4c0d4fe05850971ee1fcc7a5195e6cce89. 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/NLQ8D2500256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d619fc8c07b8af655d15689235ddd2118c48f9795b02743aa7ff3c63adaa5c. 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/DEY472572301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7b6cdfd2b4dacf6b38c19599e8bdcfc7e72e27cd05be7defc7594c402deab1. 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/NLQ8D2500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edad15dd4cfaac75a5cfb7c111ff390896f8096716540ccddcfd902d37a4e8b. 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/FR10S2529544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4e364b1dd49574c18a5624305ebae21f6f8ce970bbb14580a9ef2db7a3dae8. 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/FR10S2529545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964c9f59e639bfa30ae64b3b32721b6f74321dbdd1608b273c846f7340f7f4c2. 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/NLQ8D2400995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2103973be02bd2d3c452145bfdf4fbecd8ccd205bc83d3d099ff965f07ff6f3f. 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/GBUR62000944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6be67be801c1e12f1d8539f7142f002a4e0d5d7e5aafa3e9fb6ce0bd9941d5. 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/NLQ8D2400913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e584d9a378c79ad5aa27b9c1ac3b025d9d5c29dd536195fe981a2c2c9ac56c. 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/NLQ8D2400842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78712737273b7da952790ee7267cdbc90958c03651c6ccf1c40ed020824fe702. 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/QMBZ92484466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a8007b1ab92dda75538876a7307b17f228c9a4122d15c18a4bf7b2db24d893. 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/NLQ8D2400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a49b2d9ddad97caec7d4e2e294df7a896862e99b33d4cf293554595ee40fa. 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/DGA092488192.
The Chosen (Nick Acid & Miss N-Traxx Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a293156a9739f9f142aa3aead32e26791afe846f5c3e781f7d8a44854f93cd. 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/NLQ8D2400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06818c9270d472975318917a69b073eacdadd2268b2eedaa376e4c159e22a2. 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/NLQ8D2400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f7e7e74ce466508bd302fc711fb8cc7e33ce8b658519189e116a123830036c. 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/NLQ8D2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53deb3176d0a4d40d80e81d74b867e223d4248a2f1ab7617015baa1f59a5dd9d. 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/GBKQU2411348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cfea82f9a2816c8cbe6ab2edb77a22c30c189025e323451c50413cd12a5d1f. 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/NLQ8D2300663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc44cb1a06143fe266b6f0a02419ecc23c4bc9ea67d6c9ed4577a810b3ce6651. 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/NLQ8D2300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74ecdeb5904df06e4f7b5e0ccb922086bf03652fe72d6e21d4193b22bd0eaa5. 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/UKACT2232341.
Rave the Planet: Supporter Series, Vol. 011