1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5f63ea55b26cb67f00371337d4f521485708b6957eb82b74172c58b66d3bcd9b. 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/f9efe52c-d479-4ddf-a452-82e8dcc0216d.json and https://artists.proofprofile.net/proofs/artist/f9efe52c-d479-4ddf-a452-82e8dcc0216d.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 → block OTSBitcoinBlock must exist at that height 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 0x0152d3d63e1fd030e372623a343397ccc0d79040c53ffd2efe7c2dfe499fae94. 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/TCAEX2031308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd7dcbf3e9f933fd3b8d14322049fc80cf445065524bce1576fc0084d030eb. 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/TCAFH2037439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f62849350ef84ba38ae8a462f8db658e18dd77c18408eb96458ebb075ad0867. 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/NL4NL2107727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c86ce6624c5af4acb2240f57d9d3f06210d286f17c4ebe6fe4c561ae2409ea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGK2260748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26f8cb72a870d738e3b069c48709dd85f6ecc7acc6b4b3902d6d29e020fc1f6. 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/TCAFY2100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b5daf899de41034693694e4194d5b623a3244af6a56871a1ed48f2657db512. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/NL4NL2217047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b674564a3b8abc4b3ecc5c7e19faba4c1a35c800b7c4193c4c79f6cd794aaa4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:29:54Z), 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/FR96X2261937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ae9012dc4e0e164ceb57131ccef1a028ebfd1854fd2f592267f497698d19d2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR96X2261940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c15f2cbeb3c3e42066d78abdf92dbecc4f14f8c9fef41f9444411b9a998dad8. 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/FR96X2261941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc81018557cb847a911ca677fb431f6ae9dd24cfbee60857cc48f933db52da8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X2261943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a62e00dbb7416f7862d02c2b91e80a0e02ef77ef9b08645026dbf353c2c049. 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/FR96X2261945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6da5f0ee542ebccfbf5100e00d2a0a3b7f8d26f2f2e51a56d5d8948ebbe9ac. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAGO2250474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41f82c4723ec11df575a6f513fc97407c051bc01fd0fcc4907f7bb02fe340b. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAGS2374934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9cb9e80f86b3c3583b3160f27053af46faacda3f157d5f4a09675db2030084. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAHF2341044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6083fb938b28b97edb37bce4853dad71580b255298a45024d3a0f2d334848332. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCAJP2569685.