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 0x1f1a96fd15ca5bc6adef2d92046f15f97484fce7b3ad060a8dba6b3dede51211. 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/ae6ef330-61ab-43d6-bcc1-40a7b7e056b8.json and https://artists.proofprofile.net/proofs/artist/ae6ef330-61ab-43d6-bcc1-40a7b7e056b8.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 0x132a93fe95650b9f6fb78f835946d7fb44633c3ce46fdc0aabbc5ad6915ecfe5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZGLM2238765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf212b826a9151a847d165b70a4889b0069b31fefb393c98fb6a28c48ff2dd2e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:54Z), 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/BCFKK3000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71044b660434c9d5a1d11beefcd928b16c2d292432e530dba38fecf687c8f5d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BCFKK3000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0551ff7c1316db0d89434445afa807045f163151673cf86ec0296ff699abe7. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:40:07Z), 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/BCFKK3000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73243e3adf5158500a7bc4fd62d3a439b7c8c85ede171dafedc5ab69894d209. 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/BCFKK3000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8c2f909a54025868f001753d4e81135ce6bceae9e1a9857bc3630aecb8011b. 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/BCFKK3000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74355d544594dcb4ed3e0922f83a749e7025675674dac26c131c69ea4cafe95c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:56Z), 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/BCFKK3000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c13a950fb2234d08c378dfa8932bbd6993f59df02eb375d87e4826110dbdc65. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/BCFKK3000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75511fde8df776dd4b8752a4f19a976d3a4f5a8bd47337f374f181108cd2f6d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ILTON2501520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d02aa0170bf6ad8d3437706c073c83b92a0a30861a16c7dc27987a6e2fdead. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ILTON2501521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3091d2ba0e6ec29e78cca9ccc091ef4a49e536f3e7654429f3eaa081711fbfe. 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/ILTON2501526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e873702e22fe7bdd2fa6005c01b5a0c138d8798518c315bcdb53869b299bd7. 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/ILTON2501527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2222fe230a60b6108beaa982d873481807e0013fea418d1270404e51f9e0af. 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/ILTON2501529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6406fd49ee60436ddb36e86d8b940f7a76583038eb7ba79901ae39c78b12fa69. 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/ILTON2501532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223197952f84568d4f33323a679e14ff192e26ba54bffe218eadc5428673bb12. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ILTON2504428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7f734e2d416e16c5c58d31bb38c68b4b93ba51f845c07f405ca182c9d57ba7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:22Z), 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/ILTON2505225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223197952f84568d4f33323a679e14ff192e26ba54bffe218eadc5428673bb12. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:56Z), 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/ILTON2504428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3d9cc6fe74608dd18e605d1a91d2e934ed8121a70b8d4be71714ce8a2b4b42. 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/ILTON2504663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7f734e2d416e16c5c58d31bb38c68b4b93ba51f845c07f405ca182c9d57ba7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ILTON2505225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22501877d0dc9939c3760e975141fe7c32ada1e3c1f829413e20295dc0d4a71c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:01:34Z), 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/ILTON2504921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29404da233c4010a5ffaf94b4c1f1506cb8a6a60905106dd975135493189138. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:03Z), 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/ILTON2505804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51dba5b3b57c5855635cb0de9737ba7490f04a60d2ea5e7c78b076c55c0bd38. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BCFKK2500013.