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 0xc7b12878834e1af117318eaa7d610524eaf07046f461009f39e32253a4349fbd. 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/4127c85a-4f29-4706-bfe9-6fe86ba8006b.json and https://artists.proofprofile.net/proofs/artist/4127c85a-4f29-4706-bfe9-6fe86ba8006b.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 0x8825f7f0a3e124746e72115f06501409292321917fc5ee689c979e2127ac3a60. 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/GBKQU2350495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea15d8b66f583b289e7deac2330f27b72c026ba40d7b66d728e6c4d436c8fa2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBZVM2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7adb02ada8ccf22708c27d1d38d2e98631247a1e2c4e865ec97d2ce6cf03c80. 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/GBLV62309662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bf50deca4b8ac251bea44a13a9755a0a02d485eaf3ffc53f4b9b9ffffcd3a8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2288769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6921ea87e23756536af521aa12f33b9a2c2c3a734e718634d3a5eea7c244821. 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/DEY472471447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb922994cc7ece81bfe7d0432f99932ef85c796381836cdfe25934da9a12ae76. 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/DEY472471448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d47403fbee0a3e91ec7038a356b49b07fda1f69cc8e06306704a1e1e83aa6e. 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/DEY472471449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6979ace02f55e320f4063ef55e391eac18918c0aa67ebf8fe738f5b1ef2fa6bf. 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/ZAIFG2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4719dfa8f24df7b450f1dca13e138b071431641960eba5e6928d19864fef98a1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZA41S2226200.
Own Your Crown (feat. Lorraine Ditsebe) - Radio & Tv Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e701809215a5600d4c324016dbaae1bfede3581cd5606352501b456d133816. 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/ZA41S2226201.
Black Man (feat. Mogomotsi Chosen & Roctonic SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858f8dacacdd45ade4a89ce145578371c1479daa8325048cd04a8effca552ee7. 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/ZA41S2226202.
Read My Mind (feat. Tumie G & T Melody Strings) - Radio & Tv Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bbb102122aa606d01118f3a2a93db3bfd4fc00f8bf9d9ab9ec8e1de63863f4. 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/ZA41S2226203.