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 0x375fae4cb7063ab3e136933f8cd41b6aa0d903fbebab2aeaa4b6058d49228c36. 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/852bfed8-d79f-407b-8f3b-08236107f319.json and https://artists.proofprofile.net/proofs/artist/852bfed8-d79f-407b-8f3b-08236107f319.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 0xe03bffa1e20a2fa25211d177afd96aac4c5a2f28c55d668c1be708979ab737bc. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:36:56Z), 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/QZTPX2337379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558cb65ef2c390ca36e0a01a66c31b824dd48f05306c1d817ff2af715a483683. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTPX2337382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4236b9dd3f5f87868f720f03c8e5408985cdb9b277f4d33a31838f076a27d734. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTPX2338690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b904c2d6dd9fd4a8d255e8c47329f6d0a2195128ab29b9e3e9388592e72b7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:07Z), 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/QZTPX2387304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2df8d540d11fa02f467786deaf19790236789224ff370aae18369625a905068. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:59:45Z), 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/QZTPX2387305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb6f5138fab53bf65f7a6fea5dee91920f7946032813d7c4540bf46b22e8fc. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZTPX2387308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b4abb8837fd29d565d998a3f604a00154896d9c1b44bf67bf630ed782ee8c0. 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/QZTPX2387310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48179ae69f09348a3ab5f46004e5afff721c79acffdbe27a8983592761699fa. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:22:20Z), 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/QZTPX2387289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51102643adafe91c702e80f2ee9e80d0011cb04d90aec878a252df40a2579b43. 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/QZTPX2387292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d7b13abc8a47d59860900232c06ec2f72ca24a48b281c58c5b6370d1fe7edd. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZTPX2387293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8efa8d4cab5ff6e6c0daeb2f8ed041dab4dd2abcda05de25edacde8d077121. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTPX2387294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa64f4f164165b2110e77831078ed4dbe071490163b22f350908a8279b31193. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTPX2387295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4106579b22185a72bbf27d85183b30c49bf4da3046869e83dc8e77c619a31ec0. 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/UKXN22076480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ac3b15dc6b50531e6acec110ae423bd2b969f72718c54b3dabdc41418a8c0c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:01:14Z), 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/UKXN22076482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13834d8bcf9389cf64dc927bd7a0fdf1be6e31092944fd8165b31e4fcc4537c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/UKXN22076486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9512eeec9a235f982ffebcec66546e73ddacb539d93b68982e8bb5c88200ef0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/UKXN22076489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cbcbf80fb63a9fbd5c0dee3b34273d2818fb54b7663797a5db0de2b1cc41b4. 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/UKXN22076490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde47946105db0500349abc50e47e04d9b52dbef0625ac3739cc7f9806618be72. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKXN22076497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4a14deeaa328f770a5fad25e61e0c1ddd857ad91d382be59c4211736c2527a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22076505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6fbaa09ef99502f16536ad42c0c3a2e32fb62cfdc6ed959fe78928bb9a5b04. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKXN22076508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b97d791216e0222bd804841a2f47b91f32794c01d64b8fb98f10f6db3a16bbc. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBLFP2216241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a9ce08f174ec20d16a5feea6e1df6992f49b74e83390a54dd9374e2487aa28. 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/UKXN22331880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d49f94efb468c048a4bb7ec48484ef0854b5c6ce619ebbdedbc35640c2d7ac. 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/UKXN22331881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9a09c246c1bc5ffd63547ce894e29163e1ae68fffa081ece37baf8da01beb1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKXN21970519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef2b1c073a0f173af5d102c6e11e59ae4426bcda0ad354985e96fa0fe57fa9a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:10Z), 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/UKXN21970521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4270aabea6d712f3d14b4745c326b73a89aaea2c5d0ff1d9e0fbeb1a5e7572b. 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/UKXN22330656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14fb1a49b83d0ca0edb86f1c3e96596614e45160a07661e4c7a0c256b8db108. 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/UKXN22330659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a714bf00e233fd51355c29a77dfcc06764a045d7c991bcbfc012b3f9e4a4f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/UKXN22330661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aec70ed617a4dd37bf5033233d84f8c2b7309d91c9128d1807476828cdec6a5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:00:42Z), 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/UKXN22330662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faff24fd120d8c90790f7df4f14e20475ef618a7c393157505c09c8f9b3a6c9. 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/UKXN22330664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4df39c825b03a8e95c94e9b5245bef701a5d25bec1485ec0a4d1130d2a58ed. 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/UKXN22332796.