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 0xc2405f2d0798dcd1b4de1ab963ba87df97101f776ace7d5e37071ff101980a8d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b626e9be-39b9-4301-a2c0-2fb067a36434.json and https://artists.proofprofile.net/proofs/artist/b626e9be-39b9-4301-a2c0-2fb067a36434.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 0x1d79f5454d01a5d35e8fea2cf9c15ac5f8bed04a528b59ddab09142206c9189d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF1929271.
Hashtags and Hooks V2: The Dallas Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8479d3709313932e5065d103dc5fee093127b6694220cac7cf04df3206456410. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:24:32Z), 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/QMG491728754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738e4ba748c2e45fc50db9dd875cbd8baf8b7be6a4611c245880c9e289743209. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMG491714058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d407b6f29a8fb41ffc04e3dc517ebf583a698bc4fc9be52dc2dc0683536fdc6. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:54:37Z), 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/QMG491715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44416a5061f0e932754bca1783c9592160b6b931cdf20971393725f90ca4f98. 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/QMG491715030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4253c1d5fe65f50419e3d58c3b1cd92329f952f8f9f2690f2925715f947a5a61. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/US3DF1929368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2855412be8ead39d01fed354fabcfd69a80fbf38b014a145233b6530290264. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QMG491713473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb450bf8fc2d65609a5ceadc466d911a6e5850c82962cb9e48306803e9c33b0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:44Z), 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/QMG491714522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbcc6268d289633c0bcbaf13173b5758f600aa7b6eeb19166397a48e35aa0c2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:44Z), 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/GB8X81897153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ec1b4f714cf26ea1b8411324de7824e0c77d8ed7acaf25e4e2d48a1ae480d4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GB8X81897152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aeab382ad9965153cef0bbdafa4e8e4c25ebf8aae73f2b7f9511d5ef758783. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB8X82060286.