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 0x7c87ea105a55143c8b42a7d115558c8045e5703183f3e74dc7f67e34b8fb78a1. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48e921d4-58d8-4c98-bea7-9be183275857.json and https://artists.proofprofile.net/proofs/artist/48e921d4-58d8-4c98-bea7-9be183275857.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 0xcdad34554aae116ceb37c258981e7541f3a0f0c253e96e9b210fed6aed0cf117. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/DEZN82531537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb44b8e820d31d1383d247207742a8883e5786196f7bee104cbebe2d1b8265f. 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/DEZN82531478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135f645ddedb82169fd4197fa13f1b6b641b1f195bb47a510d3b911b40d82d5a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEZN82531511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e0c8c20ba88caaa3e86da9c221bb6e19b53ed77a0bef08a83e6be318cd680. 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/DEZN82531481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8599d7de0c21d580ade5091bd7a43ea1a3cc8bbd5b1e30657fc9e4cf0d254ed. 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/DEZN82531507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8114efe86a51f6011aadc6aea6f2b57ca6013c5356c606743d0e0a302f3439e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:35Z), 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/DEZN82531494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23a72cb9c9caf97bb20c483e20e4240e00a1ed3cd0d17412d1e39b444a7a76c. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:19:07Z), 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/DEZN82531497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1982957f81dbc1ae51b9f9085038788fb86187bd3cdff38c03873ffa6ead5f2b. 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/DEZN82531526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7668d2ee36167722ee36a8a24746e4847465487583a8aa98cee20b8679315e22. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZN82531528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461060466c305b159c11da1a39d3e88cf1013475f103fe1607bd88c6477681e. 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/DEZN82531502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781e28a64cf6b425e5987ee383681994111ec1f73309c5741ff43a1c45efa6b1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZN82531516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d67171b7b415a87a3e2b76a47319c10741fd08f5a7abb10e79568b72cc2abc0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZN82531495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30fbd9e06e69ce9e5f3414e9a6215ee20649e074372aee9570ef303635f0af3. 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/DEZN82531536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0039a23626696ab4a94c7641272d2b96eb4eea385a0a4a929f39174d95f857. 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/DEZN82531509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606ef4f95e164de84f1a24b78a8c73c9acd271976a68c195d288471dcfbb114a. 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/DEZN82531539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6abb5b3156672cd867d31ea0d86a2e6364f0f63aae7080a8513954e9cd5915. 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/DEZN82531523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f63f40b785d4d14d7f8056084ecb863bcc95be073131bc2d2f8b906315bc3e9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DEZN82531533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7f6c2a93aa013cc7108b1a1f6048f668b6c97568870a84bafa4fde19fc1df4. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/DEZN82531538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a373bc9c9a358ebeab613b96451e57287aaa949a93e7b0db68722a1d99deeba. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZN82531482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bba87871c0c5053bc4b6001cc69af54bf65ae9dc8f3eeb08f4eacdf12b9889. 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/DEZN82531479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a657663d3bac3b10a5f715003cae74ac982c4833abf441a14a9cdcfe98d05d. 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/DEZN82531515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72188013a810b7755a4d7c8d44156ea277b613450025ea3a94cb4b8546311d5b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEZN82531490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d7a08d88068785d7fc94fc28735a78e15ad24f2a522e776238e6da086fb8da. 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/DEZN82531496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7032652c622e76604c823832bc4e230c2894e98aa5642f760970c70d695ca9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZN82531488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fe441d22cac28596ad8b6c811d43c515d74347d3fa5d0bd348c69513fcb94b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZN82531485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5e41b0563c7eb93ddfaf3916459d7046613ddfafdf3bf077916fdcc18696c9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZN82531493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54819a15efbdcd04d793cdd46c95b44af1acad55a5132a4df353ae9608e367c0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZN82531525.