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 0x26b81ba0882422f1649b9945b0c08c75edf8461249f6b417e087d34d9751e3e2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90299cfd-d9d8-4b28-a981-911f46e95979.json and https://artists.proofprofile.net/proofs/artist/90299cfd-d9d8-4b28-a981-911f46e95979.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 0x8d6ea1efeff41658611f31d6b7c025a0248a877d07a8f494b710c53d4fb658ed. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USA2P2031763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1719b368fcdf72423cca66170a5f4002643b8bf8fee2bcc7fb30b2f029e456. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USA2P2031764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8ae3ac98adb05c786403a12c48b1f9086073b674e7e85d4f15c3a5c80618f2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USA2P2031767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0ec0e5b918a15ebc1a529eb38e7969dfe71906979a038c052333d425619b2f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USCGH2233149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6ea2dc28b3921c01c2d5a64fc3490f8e54e1b1c2ab856b1001b408a5eb5190. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/ES71G2318663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1504d615af3e508d11b2df5ac208040008718512dfa78571f3e7fe35f3273b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2322485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c5cc4c570035c28f24900f503569da67b8b382142f63924f9953945671cef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G2322489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6ea2dc28b3921c01c2d5a64fc3490f8e54e1b1c2ab856b1001b408a5eb5190. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES71G2318663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c34ab747d6c22fc81fd4a869a4146d537c7f7bf844a90682459715f8f12f93. 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/ES71G2322490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026fd108c1df8053b6e87a334b453d6918e62f5f223b7ef04f4860d38746dcb2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES71G2322487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0ec0e5b918a15ebc1a529eb38e7969dfe71906979a038c052333d425619b2f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH2233149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dd0601bcd33f32d9ae736488de9247df8b71fc82c1b8ec0fcb8e4baecbb8d0. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/ES71G2322484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd745c79d22c337aa0c3f4910062e905ed927e3fcabe6189cd29f1f139bdc37. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G2322492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd59e95c105a2265e18b4b2f35280ac2ceacbd94867742bc3501acc837d3ed78. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2322495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db2223118ba8cecff396fe70574cdecef7355b02ed05ffffecb83d42e70578. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G2322496.
Si Se Calla El Cantor (Juntxs por una #CulturaSegura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19a99c565938456b8e5d702366ab6c0e0d641dafaea7ac670c00d45aa8d55f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2239309.