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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788f377abb6df0d518b17bca3c64ca3aebe0d8fb979f1032442b7af589d662f8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca0ca161-0254-4bfe-9cb1-c5c73bce7963.json and https://artists.proofprofile.net/proofs/artist/ca0ca161-0254-4bfe-9cb1-c5c73bce7963.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740e46ef07dff205660b8f476f29db94d3b606eb83f2421c7000d9af6153d737. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:58:40Z), 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/FRX629636010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9f8aafc7278ff450e3c70f6a760919b481d51cbe9f1c9f53c72ba235de507d. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FRX629636030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2a8dc45dba7260e529972f2d80ad7606135b9cfcc93664dae2314d46b9006. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:04Z), 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/FRX629636050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79e19dc8af407ab0332ce5d3c51ab88594036337c162da5132cbac4bc8a73a3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX629636060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a989e0dedd51f2f45c46ba171b533b18557b73856900e84967e3155388ed00a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX629636080.
Cumba Ietu (Revisited By Saint Germain) Extended version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b2da5cfed102a53711609f01e85959d2e1ca016a224f5725b79c73a1dbb42e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX629752101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8035ac8a75873c7a90c43b01f5f90333cb69a6a70dc3dd34b087499dd4ad77ab. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FRX629700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b772a9c607c30d68db87a89d077671902852c152f907b5579da87aeecd1fce. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX629912010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36da21679ddacae0f21d169f8c1cf952d84db5ceeff80bf2cce627d044f2df08. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX629912121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488df818f21679b51c98bb591dfa339e215f64c799993b880c38440fbde20e3d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX629752031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e85a63724739cdb36edf866bbabd8ab26c867166bf6942d6910956d46d20589. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FRX629752010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a3e8cffa9794ccdfd07cdf2a9b7fdd5bcd9b5b6d5ad378885a56141fcd196b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FRX629636020.
The Lusafrica Series: Lagoa / Noite de Morabeza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1065370cb1302c1cee36e7a0a7f25aef56beb10a5d1bc70da851856b734ab7d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:07:33Z), 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/FRX629752020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f43ac1a4bf00e6f5061c472535a48176be9d6044b49a71f2853ba9bcacc4b9. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:05:52Z), 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/FRX629752100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef12effaecc12b9941208c3a3a30bf6cbf190ecdfd3981637a7a9f0adac347. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CVA002000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d42e9849acd15ba951252a4c5b6191597b686225bc8dc7ab7d1b2d09e5da3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CVA002000163.