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 0x10775a454c6d4c5080c48920f73ca16ab36a26dcb552ea0c162d9b418201ed19. 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/8a0243b8-d38b-4380-90e8-4981d1f89092.json and https://artists.proofprofile.net/proofs/artist/8a0243b8-d38b-4380-90e8-4981d1f89092.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Encounters / Cortelyou Rd / Rivers & Wine
Every Single Night / Space Hunter / Sparky
Can We Choose Happiness - Eli Nissan Remix
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 0x0f16d6812c178366117ada1c3cb6d555588e38c4d2a413744c271f08eb26a38c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US83Z2509267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf234b6d0b1b7c20a0bd4da91357bee170393296c98e310441e0848884dee8302. 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/DEY032502876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd44728afc79a1e4a5def93b89642f3aa2cfd19f5dbe90108ba22b44ff34770. 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/GBJX32005116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bebf846cb839d720fd18ea4e5a942c6de5c60fe01ad9707849f57327809833. 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/GBJX32005117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438ca561557b605fc86ea4cd2dca667c047e6a2da308bf6ab869a1e1f24383f4. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/NLT2H2300455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b93551dfba63ef271466426bac9d7fda181a2a5ed107e4b13c4f6727e6f5611. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/US83Z2311512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55ca1735cf1116492cf4a0186d2125f47394a83cd7dba77bcd8130b71b3b313. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z2311514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345351429f12ddc21e46477afd5b78bdec9427b31206de8d0f91e31f03203b30. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US83Z2311513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d91b3378e548f5d8c784dd15ec54fe7b3072f3be498f4a73393f77f9934c4c. 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/QZFZ22368152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8465336a73a639419c3a925f931c5b9099f1499f9b56bc0a2c9c5340109b98. 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/DEY032102284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3f86122179ba77a5c8d35ebae3a351b77a05293098d89f79c25083e12c19f4. 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/DEY032002081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc63629a51938274b8b0e2e07c6e8547e9d6799cb3ca6bb04bc24ca6b808f7d. 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/NL8RL2420827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08096a81f27d29b573a2affb467f90917554a6ff4d1ee79cb32a116a59d056e. 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/ITSV22500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ece0ae2488d25654c6e9269abe774005ab9039b6a3839fe501f00c5d6a97f3. 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/ITSV22500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ce8510860dfe904108a6585ee958d041542298640f8c8061d4af0243f09f6f. 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/DERN42400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa577dac98b019fad548f988b06555909230b38b9be23449719799c83de944741. 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/DERN42400461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc63629a51938274b8b0e2e07c6e8547e9d6799cb3ca6bb04bc24ca6b808f7d. 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/NL8RL2420827.