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 0x22c536a02b3958258cacac70c3c8b7ff53b3fc0f2bec62380b49181787493dfe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca2947e4-a8e4-4931-a0bf-055191900f0b.json and https://artists.proofprofile.net/proofs/artist/ca2947e4-a8e4-4931-a0bf-055191900f0b.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 0x15b4e7287393fd2ab06fa3d80bae9c3d5029ce6ceaca307258f0dd9c89a68363. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCADW1840808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8cf696ddd8531a46ec9988a3f76efa25ae86e212f1f2037636763036b6bfe0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAEC1979652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619b64c238b973abdd6f61769d1f95c0b94c1a68074dcd327db1cedd55ec8059. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAEE1988694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fa81b01576785c62c6034d6375c9b793948f1970af0e6bb1269b1baa17a50d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEK1986146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63026eef36d2e0f99a1bf530c96b763475ec20bd40f61984edb68321243f4e4e. 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/TCAEN1915806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d9e560787f3348ec64812fae613b58f1658fe05ea471cc92fa3f7ee7ac3150. 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/TCAEN1915807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034027cb26f4bb131430ef8d652a0533400e5b6de83c903bc8584048125cafa1. 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/TCAEN1915808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a21208287153b654defcca037292b76c5346975b25846af90706bfb644e817. 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/TCAEN1915809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39690bfe326107ba88a11ffe0cb0356b310b2b35cc751a993da768753567539b. 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/TCAEN1915815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdafe5fa69f8e6c422ed9c11841e8fa79a841c474a66da7d746c208842f3c8c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEN1915816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d2a4b256f11616b4dfef2c7849ad3a582d7cc1473faf6c6dfd8bf46176f712. 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/TCAEN1915817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252ccc07e26595f44ced1d281ff88a97285e51132c72ab325b1c2a74364a7fc9. 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/TCAEN1915842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b4d2ab813a0108e79471d2fa9a55741de6134da5776a1ca73085fb89db1cf. 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/TCAEN1915870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae454aee5107922265d82738cb5c5201a4e8c34c8e90cc9fd05db729a2d3ae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEN1915871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e615eb6be6bebafd9a4b1750a29d1ce71c4a9a329302a5bf79030e82d60d11. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEN1915874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb751f53f43770fd1cc34b2bc5bee2e1cf6ded5309b4b408239929ebb3b85219. 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/TCAEN1915884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1413e316c351246f437dda7ec299acc626e3be09dfc9cbb5ac5e630b02500c7f. 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/TCAEN1915888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1190fcdbe93ffa47e0741d31bf48e53f920a18954e20c0ea3719842e757c19cc. 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/TCAEN1915891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc527619beea2065bf33d27da226de18bc4fb168b39f87e26c5880934360a2513. 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/TCAEN1915895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf403833c70a7005bcdaef160692bfbde3e97a1e8ebc7e566f377c92d0fc31f82. 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/TCAEN1915896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8964623d4fb2429d0e6de4ac4c77a3be80c0ca06e1c1e12ae9f85961cb8796c9. 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/TCAEN1915900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67da875362771cccaaef3bdfa0a2261677db067487e17cb447175d35282883e. 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/TCAEN1915902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56dbc2735a713d5d4b5a3946e3c908ef2f416c19d45666505899957fe7e88e5. 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/TCAEN1915903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c544ddd19c164640f18b06c00a459876f483667fa44de480a912601b7550e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEN1915906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3230acce4b9bf738350e1d1eafd4734c8b9c35c2d472249c59d041786998d77. 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/TCAEN1915907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa993d00b2aff4ce87acae93e660ea7b876e5162461f7d1b50d1e85ba4c721596. 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/TCAEN1915908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddde675a2b87f2e149dee91ac5ce3e0ac5edd7b3bf8fb64b4bda032474528fd. 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/TCAEN1915914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1c78116f52ac6349add7b25f134a457a34a29ad149452693dfca9839e581bf. 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/TCAEN1915918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdad080481fe5a33f8bcbcd9c5f31fb7b6fe60dc249952dacd48e3f138c4e92. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLS2103184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc24595d975ac62b762610d71bfe44631e8ce7833272bcfca729d72a2c74ab. 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/FR59R2420829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10369ebb4a5938629ee4658dd9117cefeb9ba16dd9b3d1ff9ddfcb163a785e2. 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/QZGLS2541334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc24595d975ac62b762610d71bfe44631e8ce7833272bcfca729d72a2c74ab. 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/FR59R2420829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28be213d2119b973d67fd88807f58fec01a0404900dff4cba2f21b82883ee5bf. 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/QZGLM2528693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae4f930c150de387b979436e4e696af33f90df717860c4230c4b980c6b33f8c. 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/QZGLM2528695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f3447f71509f074e4fbc56754c3ee7b3e930ce5a38f50f3a3e6aec91e9a2b6. 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/QZGLM2528696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8737963a411d7e927f49260da97b8bc6f741e7584e35648ef2cefaecdb2ccd. 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/QZGLM2528697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8735a887a76919a334baa1a709de230035785eaabbd8a916a48b24810a8e5457. 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/QZGLM2528698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c8a04af484c004b208b56f65f2a3cd9ba84613f6030eedf7fce04ae7e2efa. 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/QZGLM2528699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1217ab9ae1c7d1a334534c9952457e5aae6cb8ed9d8e470d61588ee1b91d7b. 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/QZGLM2528700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4869986866624b09bf12c846b935cdcef50091927ee27eb7a5ec51ad57bbf2e. 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/QZW9K2355430.