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 0x0390934fffbed5b1eddf14b1f3e536d30bb2bca75c259a4a4d7f4aa3b17779f3. 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/79bf495d-aed6-4602-aa97-eadd73c0ba7f.json and https://artists.proofprofile.net/proofs/artist/79bf495d-aed6-4602-aa97-eadd73c0ba7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gettem (feat. Bonecrusher, Don P & Lil LA)
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 0x9a12f2712b29ef7b89efa9910ef0f21c6238374c480021564f41376ad54ef20c. 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/US3DF1818274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfde03c16bf1ffe4f285e249a9984c36f81404ae552fa7cb6d70a1317e797154. 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/US3DF1818275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51870ffc1205c153f663906318aade184fb47a2620ed702e1309065423c32fc0. 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/US3DF1818276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77af3b2411691d11bc3b8e64e020bb2cd420cdb9792936fffc38e78b3e899a45. 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/US3DF1818277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc1b74f9fa421195564538f83d134ce4b25e838e355d8e0d00f49d30b469cbd. 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/US3DF1818278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54362274a25418f9487fd596a5886e4816062203fc5c8b3f1273ed4fd46b25fd. 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/US3DF1818279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869550a37dc06a6516651766f079403d6e8f50a4842650126bb6b6f88e482d1. 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/US3DF1818280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95669f9905f9654fbbe1043f52d955f400c8e61f1f1f318a65830117a73fdbb0. 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/US3DF1818282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbdae7b75fed04310aecdc699c56196c4b836360f79becdf5fc4e037280d804. 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/US3DF1818283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9919615c261cab0efa60780b255df3dd9d1b25e605f5c0a027611c7bde74fa. 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/US3DF1818284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12970c1b2bfb3b619de4cfb9d93d894129a66680b8993e1c21bae4d6497e319b. 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/US3DF1818286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d247ee8a7a1bff5a21054136ab0d09ec366c9ed78af15542e81de3d285b5ef3. 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/USA2P0742859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea8d6fa22691a856a4e58abba841294ede93fa7fa986896f353f1fab47a960. 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/USA2P0742858.