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 0xef16b2f327e1085aafa939a48d5a4b11c03e518a5d32409518c4b8b19a16d8f8. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a64410c-b6ee-4169-be5a-ce364cd3ae83.json and https://artists.proofprofile.net/proofs/artist/7a64410c-b6ee-4169-be5a-ce364cd3ae83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
JosKua Música Purepecha (Abajeños / Pirékuas / Sones)
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 0xf7dd6bc03776e7e7ee8d0e7b77f252959c555969ab999412872d89ef5324e877. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR2X41453422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e3147e76034fa05abd070cee1cb6f997b6cb2cb425e8c2811724e7f7c186b0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FR2X41453424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746acfa781a56de83dfea2bfd14747206c086a7ad34c8da8baf5eaf44b888573. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/FR2X41453426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7801592a91d4ab7d7237a96d395a8e6f9b04ff209d24c9cc6fbcf5adbcc5d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:47Z), 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/FR2X41453427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2b30c71d561216988118c39404fd18fdebcf32333be09198e7505b66832eb9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR2X41453429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca6897380f32d5295f5e16620d4f20194e2d4da1e237cb9aba7a4a5b6320832. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:00Z), 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/FR2X41453431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b466c01f26b3dee08bff257ae884ab4f8260c4817ab41b740bc8e044028b36. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX201862163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cc2e3e52ab69d9f4365e6783a29d27f6113cc2d7ca7f9e9b8dfa62acefc4ea. 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/FRX201862164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6395d5e3dbfba4f9485abbf33d7a61e9de2cf98d6ca3a3e12170e278d7b59. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:22Z), 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/FRX201862165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe8c4fc35ee4e64c67fb2fb67f9d3912c68b8d1f142f64e5bc855f5d759ad73. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX201862166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea31798bd6c41f10875b87731bb30b20764de3ebbb79cd7ba502fb22d50b5a8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX201862167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70855210bcbdc53f9473697d47980bb13f2b2c290ece9b35bfebb25f62a14872. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX201862168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb450329223a86f3cd1b5e8b46c02e43e4e7e6a0f291f9091dc3e532f86383937. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX201862169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae660cb40fc7eec158fc5c9e079385077217a561ab9810105d6a217c2261b08. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/FRX201862170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0125249184c43f5f1a722475a045b2d51d445f69b877044868e3a3832333379e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:48Z), 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/FRX201862171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a6ddde3990fd70039ca7fdb8109c7dfee23ac9f5295c36cec5939946897d2c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FRX201862172.