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 0x844d85a571574277433f319fd66201768bb88a8e07e1e8aa9d41889f77d66b9f. 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/774972eb-d6fd-4467-8f1b-86bee0e8c20b.json and https://artists.proofprofile.net/proofs/artist/774972eb-d6fd-4467-8f1b-86bee0e8c20b.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 0xc15d4d57baaef1571c940841081e2c6ae1cb35c9b399ea1827a2a760bc759e8f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAER2011974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1486a656b5365427a6278c11b469aaaabff09845113834a6a170c19b06492912. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAER2011996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc917aeb110f42ed6372a0fe3af9a18083bcd1a7170daf3f4a7a24847576606b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAER2012000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a952686b90fb31574e27f6e32fe8177263fc68b42a9d11695611261719334c. 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/TCAEJ1935241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93772bfbcf2a6ed15a73537d9cecd37606f71f143681d518fe76bfc4bcd6b3ee. 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/TCAEJ1935247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63714e71b0e16386b95aeeb49791fc166c5115ca0bb36814b833a8e29b52e01. 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/TCAEJ1935342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067a6df37d2ddc959c03d0b4eafa06918d71e28b55c335bf4cfd74c143b91552. 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/TCAEJ1935348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bc3c6cb40e4f059bdf616ed6ee6838c87e12764b5043c7953beb7b3c32f779. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:21:14Z), 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/TCAEJ1935353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70acdf773532ee060efd08a4d0dac865c3362ce16ead83cea616099da6453128. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEG1937651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bc218c71da7f9297d04da80f498029558fe256ecd1629bd64dfdffb4001e1e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAEG1937663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c627ad07b08696f69ee671c750e81db71ea57e0f332fd26f8d73c05ae50748. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAEG1937680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b47a6867a57e44cb4bfd5f172089a0fcbc54a87bd42d555d58d74f963e7c45. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAEG1937690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1e6821d6728144c126ca0f578c234e435cc241a47d49cd3f87680263da5e9d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAEG1937699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d2b44094fc6c1f9600da996c8b3f113387d007feb849471efe2669e3e2d78f. 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/TCADS1846912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ffb202cc564e310b0a696844588ec6de7cfce891e192a1a7ec25f2b623989a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADG1766485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c5bd9a448707c9a88e5c8adbb76cba56bb9fe068a47940493e47da3c486222. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADG1766487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7eaae047645dc7d9252ab9c644c0024584bf8b359abf305764cdc3962ef75a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADG1766488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac01b50897c7f28dc2e036fb493ce847866b00d616617274bc47378cecce189. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADG1766490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb5a4c857aa129bc3d961ee71dfe01732e913e0fef8669c32ecfd5463635351. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADG1766495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbf7477c6a0d2f4a97b78fbc69754cfd5291c5ff48200419be25b478443e11c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADG1766496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26628c0ba686c7303e25792b50d92eb5921d86915a5cfe5cc7c26fa2dc4621f2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACZ1716020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309737be6c01f46a55322ce6561b4615f1d45b7dfabd8fcb1ec18c62bf8e7748. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACZ1716058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac21e3b58cca04005c7e37607cff00be470c13e085b7dcf6e7bef5cc3786012. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACZ1716062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad5529911f33fcc08cf8c47960fa5303e7a712bf39c9e7d173eb30d94de69dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACZ1716064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c71db67f79e3d348609d8d70b46e6672ef77dfde98f6aae9a2d9fc56fd27925. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACZ1716066.