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 0x212952cc009b552136c3961c902568e0a4dc8833200aa11007819e4e2bbb1ce9. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdfc1b8a-941d-4612-aa45-853c3aefa5a2.json and https://artists.proofprofile.net/proofs/artist/bdfc1b8a-941d-4612-aa45-853c3aefa5a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soul Classics (feat. Chris Norman, Chris Thompson, Laurie Wiefield, Geoff Whitehorn, Alex Conti)
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 0x8a7e6d035c7ca5754aa28533163aea2c16093c29d7d2dbbae2a092f84ea0bc5e. 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/DEU241115878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4514465a1bddb3888ff08355b52da66ab82b33768f4804d770af5b153b0b14fc. 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/DEU241115879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cddecf4d4fa6091e180d2a709512cc52a766a8d4cea56892eebf2083fc4c07a. 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/DEU241115880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfb69b63f73fea44e5fa9bf63c1fcddbfb1fcd431800ffe3e1e44a4916cc237. 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/DEU241115881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac261baba76d18dbc2db4ed12fc558b01c64e3f6d648306d92144017c8f3d41c. 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/DEU241115882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351ceb1f91f4244536d7dfab2deb6eda6b1b0d93ed435bc6de7c15b07eec40e8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEU241115884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502a81d18c5babf99ebbeb438e296e40efdedf8e88aee27bc2e090cce7359082. 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/DEU241115885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ede05250caa47dd82f949272da693141f982b836e894cd66676bef97a57ac2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEU241115886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b13935de9b5c46ef9403edb22b44e3b47fc55f9c39ff83ca29430426a92b2e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/DEU241115887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f833ae0244b0130ce347a6c7f5bf5dac7144546729d9c8424c38c7169a0521. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEU241115888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b24ea4c3454f78aedffe1af8f265f6b7a30b3744f2bc2daf0f970cd89adc0d. 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/DEU241115891.
The History - La Historia De La Musica Tejana