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 0xfdf9ebb6e8649a6530afbc782354bea7d22e183a21513b7256bac1f618e07654. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df1cbe44-f5d2-471d-ad3e-d555bff1ac07.json and https://artists.proofprofile.net/proofs/artist/df1cbe44-f5d2-471d-ad3e-d555bff1ac07.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 0x12e1f0db7a7b97af93e8b48d7b847c016e05624e38597296ba48729b51dc5721. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W12205831.
Tuco Benedicto Pacifico Juan Maria Ramirez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35da9b82162a88d8fd764682524e7c6ad9da942384b4494ea6f0b002d0c177b2. 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/FR9W12205833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541ccd56844815c4f143403ab7a941e507cf26f7d599e3c553ba48cae2a9c4f2. 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/FR9W11826464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4c6e5da01a2dcbf5ebfff886d32d504f280552f5b2fbcc1bc7b17cb5383097. 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/FR9W12205836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770e6b2c5f65c3ef5a2c6595acabe021831341ceeb8585e4c69b979ed8b70470. 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/FR9W12205837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4386644b0554d1515fee05de6cc4b94c55af8314674bb84a2d9f4cbc6e7f004c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR9W12205828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480fa9fc8fd90b91767fbb884f2b0022c7bb8dd1a412a5a8af226c9862231d2b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR9W12205829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f61465b7d22518619744eb44e0b70e45f7927751c7ae21e3f15f51fcd49e4e. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR9W12205830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8158187056c717937b69e711e0cd30b6fdeadd9aa90909a7aa16730075050162. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/FR9W12205832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e026f9ed6835473430bda4ae384671069924b300d36f321c9158b0b13e5858. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR9W12205834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17faab2b53fb44bef89af414bd6cbeba17d2992920f0f692f8428a15d1e95143. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR9W11724733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c85dde2eab065b19136855174062c430ab0fced0fe841832763834d24c4932. 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/FR9W12307787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0220b3010df506101a90c93b704092e24e1983d864eca25cb0ccb1a50be8e4. 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/FR9W12307786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840b33dfb7c6d16573d16a21a39f43d664d1b0ccd0d33619ebf01fa284117a68. 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/FR9W12110443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd57a862394b9ceb324636f59eb0984a836bf9cf51895391d9024ad312520b1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11724730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d0da705c3c2772133e48e8947080d54c609583fd9f9692075b8f3375f14515. 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/FR9W11724737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4087008381b4748a7360d75df1ac69d5e8a99cc3c37ff1b5d7535925feec296b. 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/FR9W11421783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec353f8343dcf7b70f787cdfb61c5027870fa87eac80665742907ce823db3c8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W11421784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7f30fe9b999e6f2f78702f6fdf7adb9e795110cc258cdcffe8b58ac9b7965b. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/FR9W11421782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1630d673dfda7592203097dcfbd7c303191d65264c05815977b5f766adc0d6d6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR9W11421785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e5ee19eaebfb1b0aae09368db96bd8e904ef18ff46bb6034cf44848ea9c15. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR9W11421786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8cd19c3104202338f640c92d28e467d619e5684d6587b8352ab6efbedc0c4c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR9W11421787.