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 0xe4a4a5f2f2873db72bcdbabfc828cb7f1c8501cd7b8e29f1b2b59093c3c3082d. 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/9fc741ae-795a-409f-a025-8f1a85b974c9.json and https://artists.proofprofile.net/proofs/artist/9fc741ae-795a-409f-a025-8f1a85b974c9.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 0xe9d99e5bffb259daeb314ada2ace20c556a74519a9731c20056f489445b2b8bd. 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/TCAIJ2426812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e318e4778f7909617ad28c46ec8587cb2cdf07ef17daa103d5d48b711aa44c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIJ2426827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d4813dd33d7ee1fd89f2273dabf6b0a95ac8f2d826644a6e2f4467355745f6. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIJ2426831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a833e322217fd7311ca99aff69dd1015b7379accdde34b6964297775081232. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAIY2416222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59860135312593c6ead92f2181dd4ba95d2e530c3b27c4ac6bb6195e05477a1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCAJA2439888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4a310c123a11ab9fd57d8b63e0ea32ea7630fdc7a1488c521cd04fdd9ce948. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAIZ2439894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e0f1363ddcf45dac8f1009f676e7127e0f556e2af158988c6c516211b8d0f8. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAJE2579679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262193be60caf87ce03864d804287eba9936690a94ea79f93337a035ba4a78e9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAJE2579685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d30b5e3d0c0d27a8aac6d470fc0b44c0d3f23c87af97d051f7f803714f313af. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJL2521226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d55a1fce81d6c9998f3bf9a116573fb15c98e8e7d92a05e5be6a6257414403d. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAJN2559972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e719608b545445fe72e676b7ccc27ea3705e179636e9c697e01508395e4f6d6. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:55Z), 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/TCAJN2559989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd2c29e3f90921f11fd2d2c732304d0e696f95c4d79f293ee7230da3f408ed3. 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/TCAJN2559992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd86cedde585142f74214cb9ddec8ba7577c4b6dddc9d739d44d0bacaec2bf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJT2514435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb54f7983a54f47ae9de62b84b508274218ee8d3183a8d705773810dd5b10391. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:48Z), 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/TCAJT2514439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ddc2bba843be42107c314a8c6b39e7aa68eaef5f729a36d82638eda896ffaf. 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/TCAJY2560497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3d0d1d53ca57b628e46ccd0ab24d4efe63ec59199a7aca0fa60eb85b807d50. 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/TCAJY2560500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0e3333debf430bc5d93d6b2e98354119ed8395f8095925e22c28c42df6a655. 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/TCAJY2560502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75529b3e93222f578d8380f7c0a8157aae34db0c62ae78998f4095be952bcf3. 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/TCAJY2560508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa162a8f4496d00eacf7767fcbfde4041ae7fa0d2fce5f024f03bc23f9cfac455. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT65X2581895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ea6be7d1b0ad2a85a94129ce8c072a4b17466e56e1ef069314df5a1f58db93. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QT65X2581940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1adfde1d537dcf66a01cfca57bca9e476805a5264b26f79530803f5f037fd3b. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QT65X2581955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead91291c7af4dd3ec4e998be8ee0cdc0357e525a1d6eb7947a1ed6096889aba. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT65X2582000.