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 0xa2beffe44c9b6f451beec67e3c5020bc2461bd3d92ad734d250150d10bd1d701. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a70e203-9ea7-494a-bb53-2e9befeaa1d6.json and https://artists.proofprofile.net/proofs/artist/6a70e203-9ea7-494a-bb53-2e9befeaa1d6.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 0xc66b71785a09f171b976954acb4c88430645e3c6788d15fedcb5b9d83b440cde. 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/ES6080443802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03b847427eeaf429aa93afc66cb92d9122692c026b7ad6000002eafd76f25cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES6080443803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efbb70a05e58a18829c584dcc0b1e5b2311ac1f4fe3efe54a887f2e7ab4716f. 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/ES6080443804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeec3855419ca32454b109bc8d5e067a6192315dfe1fdb6f66ca018867eb797a. 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/ES6080443805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e6450cfb5c1555ca0c875a190a864d1beb1a77a1f1400524c6f61189132562. 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/ES6080443806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fedc412f051d7e7ad462e568af65055e47ceb708c36645992479ae91923498. 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/ES6080443807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b3e2bdf55feaf066a49075508bddb9e74bdcbbd168415d4ded24b7e071cda0. 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/ES6080443808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8bf456019a7a083554049e2afdb67cae0203eb9c36282ace62d8065d3f3a8b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES6080443810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae1c596c04c130232778edf6d78890695f58315a245dce8a35dd1c538ea9e9b. 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/ES6080443811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524673c660ed496581a8e6462e6aab2e363e11d7ef01953725d2bd349b61181. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES6080443812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67628745a841b7a00269f292e655ad1a88d624615022779e2c282de1a8065d6b. 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/ES6080443813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b46dd05cbd2b23fb4f530a822e1e7a64807328e41ed2d52d1767fbb5da3ae2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES6080443815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447922767b14b6aaeabe94655dc28e41c4779fe326ee32bad5b04f3971193151. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES6080443816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6851c496c667eb3f04650232ab900c2ee81757cd5b5d4cb508b09b9517e5bb37. 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/ES6080443817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9acf5352317e579a25b980f808c763360b940c412cd7318df168a4192b6a82. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES6080443818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb35c6abe71ab1170b331f431fc410479c4569524763c614b46bd03db56d72e. 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/ES6080443819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180b0c7fc11bbcbcc979606491befdf960d3b86197969f7a55cf14ebcaef4d38. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA011989196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24550f273ba0a2b7ef5df4b910ff1f0564afa07512ea52423fa7a5f35f38d0c. 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/ESA011989197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ded6aa9b99fc39f313f829f4fa3540826bd5ef5202339196cb80cb956a53f5. 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/ESA011989198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b16d9054487f1cf31d36a73feda22f3fab19e6e26ff05dbaaf5fec6e5dd9168. 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/ESA011989199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef1ad0cec8215faee9ab8207d03416335e96b97b80d967dacbd39e1534fcc3c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011989200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99996333df7eb8982d5f577818ce7a9087c7956a93828a6fb3e1731597ca97f. 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/ESA011989201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2d24f93f16cbfa2dd6e467b94e2648561fb7776a16b3c462c60d4234a5b7bd. 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/ESA011989203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01699cc46096d5634fa881cb31364d7f6cd018650de31f54959e68d279360dd7. 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/ESA011989205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e3fbcd545ce8710f4b87e3eeca66724f1b5ccadb450337d174e6dd36e68659. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ESA011989208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390c3de96d76854c3be2b5aac9d0e3876fed35520d4e9c4a7a4afacf7a3e3788. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA011989209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc02e3cd611436813af0a3cc8a88aa0620728a3a66a0627e9202c503a05a6e4. 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/ESA011989211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb137316280da842d854c57cd5d59faaa47fb0113bf65d825a06673dd83d2bc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR26V1637646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ced15a973d27169c0c824123487bf9bbe3d4c3a0a6e2801a7b59bb9ba652c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR26V1637677.