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 0xba7bf56d92e0c8e09dfc74f2af8b09e66b9ec3c982cfacaa129b2f8ba72f2329. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18084442-b4d5-4470-8ff9-9c3d051a6c64.json and https://artists.proofprofile.net/proofs/artist/18084442-b4d5-4470-8ff9-9c3d051a6c64.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 0x065368ffd7fc5678a779cdc125b3d0d447d21526fb5c0accc5b04a57d2fca19d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNC2385220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230a5950edbec2e92ccfe693404b0819e28824adaecb5e12c5f42c4087dc319d. 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/QZHNC2385183.
Vakazoziva Yesu Pakumedura Kwaakaita Chingwa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e7a4e4aa47012a130c13c731098ca5b3c589f15271769ba5c60f49a071e514. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNC2385211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf0fceb0119a90bc3adc8b6d5ef2512149aca54c62c7ba3e297284ca9c246b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6Q2305424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb51d1cef5bffa7c6d656b8d28d423833aeb8fbfe97d9b54558b1f1b9926c2b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6Q2305901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0719327947da44ba212f0b75530e9e1c7ea46090dad57e4f50f63b5092067e9e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6Q2306512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1889b99380ce8cec77d54b4258bdbe93e3f3808a684f2a6fd18f993bfea39443. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:27Z), 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/QZK6Q2339227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f6c6231cc05c5d8395ca762814ada673adeb0758b03bacaed8d9d7b9a7c936. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZK6Q2342248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c036b93a278892ccce41c9ab2f97fa671cd424f05577c518a91ba778905304. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZK6P2310663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b62ee7d2ed86bd2e5c2e0d542eaba499e69d5c4b236369b73bb517251dc522. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:51Z), 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/QZK6P2310660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6aa7d8272fc4c3186dbb0114487ef43dac781702191b7e103a256ac517467f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6P2344525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e51b7cd259dfdd9a0ad71a99178040cf8b5a62aaf38f1127bc2598ca0a397b. 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/QZK6P2344527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8178cca1f46b8ba0fdf2e34e64f69394177b2c4e4027ad7e46ffef7b3ba4d85. 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/QZK6P2361159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ee983a1e145884d33321c0bb492de064d5ce299ffe5980e678c6f2f38f7665. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:40Z), 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/QZK6P2364318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd51c326cf53c8dc29f878609ce67a0d3e26bf4f25bdb0b2c9daf6f45ce66ef. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:39:53Z), 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/QZK6P2364321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493dbfb7791de9ab709efe859ee45d48f4799ffd5ab685aa29882844e4bf9dbf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6N2311308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa666e6e5b0bf606253f71140d778deb8bc127255b724812a1c8fbcf1319cb067. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:47Z), 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/QZK6N2311313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7a33a92ec2d708750b7e1304ea020216dd9f720adc1284bf0d7c6fa4a41795. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZK6N2311314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f68df4abe6d7d5f85801aac6a633402e407994ba6de196500680286db6445c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZK6P2398007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41273d9e7540603ac91c7a9d4118d12611367cb276e3c9979e88dfe0b8894dbf. 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/QZK6N2326068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cfbf0fc799569dadc4f6610f484b16b2872a1161af34f0f1ca51cc5e442f17. 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/QZK6P2399085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea731c76fbbae072a539df2d5f0a5186897d815ce0009e0e9d5ce68926373a3. 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/QZK6N2323345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84396b2f1d0737dfd5f3f555965fbfdfadfcdac77039774968b07f9becd8b94. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:02:41Z), 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/QZK6P2398018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b48fee9c78c097a57e4a6abff61ea8493a6b25f8fbeb51415bf3d11439c39. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZK6N2383295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c6e7b2c0ece558bcd08e07f097c55ee8d885e32facc07927fcaee8c01de93c. 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/QZK6M2305197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cac0648ce9775462e373a5828d1ea20a261a9619c6a1c80419b3b49c8fe053. 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/QZK6M2304540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb56841dc348f1125eb33d4b682174e1dfe20be2c755940c68e277787d17c958. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:58Z), 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/QZK6M2305202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd536dfd9b43e6889e00763668c4fe49feb9d87d2e8dad57499d86da612fb019. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6M2333760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78974f2c4b9d0b23f142925fbc320f6aafd877a24720ffda2adb5611ca9edd55. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:50Z), 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/QZK6M2333765.
Mukama Oyakire Egyo Mitoijo Y'abaana Bawe