1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x395f663007595f54b8feeb47fd9211a00e7e1e5c90ab3069c8f5b4395c2db1df. 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/3bebdc20-27d8-4212-8ae6-c5afef47af65.json and https://artists.proofprofile.net/proofs/artist/3bebdc20-27d8-4212-8ae6-c5afef47af65.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 → block OTSBitcoinBlock must exist at that height 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 0xcedbdaa7490a2f0a35c740f409f39558a09618caa8807be7060115fd60b0a8aa. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:35Z), 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/QM4TX2101338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0db28e2ed7abf19c197a04dd8fd6e2cba50416af34e8b6558cd959f0e40cf9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:01:05Z), 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/QM4TX2101341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ddc350725e4033f3d2053048c054f0862c31147747c3a5ffa4bb2bb50e339. 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/QM4TX2101348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedbdaa7490a2f0a35c740f409f39558a09618caa8807be7060115fd60b0a8aa. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QM4TX2101338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f224b8bb120e13ab6e73edac464f7f9b7b3aaefd86c15dce6e90afdea613733. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2375511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fead18c3a6debd008b5dcc52af006f11d7977fccfb62e1d94e4f5aa191a7089. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2375525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd4feb233adb94338448181e5331675c47d261ff5030cef087672518975e582. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFMG2333223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f792b730b644ee8fcb167b95806a17a8ac1a87aba38c24592009a885e750ce. 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/QMFMG2333225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aa1c1aa355feaf838023a5d37f25be92140a3d2ac56f251fe557d7737ddf6f. 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/QMFMG2333229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce920b5d3074d586e86a539cc6e86188d607bf79fcd42d6b58c607843692ec2d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFMG2333230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3487898d633dda2cd835637c33630a59c5d4a1de5c960cb3d2802d09abcbf1ad. 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/QMFMG2333231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c808c09d5f8ca02ae850ea8c743919bf4437cd8ac27beab739415b3a6019047. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFMG2333232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6ba439a72cb6cf6f616d14608b292ab29181753c5acba1a83e97787f97425d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:33Z), 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/QMFMG2333233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65699768cfcbfd9ac9bcd4b2be701217cf24ebba8bdd3ccbf57449ab9e43a051. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QMFMG2333234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a8a80cc461152dba3c0518664157c4272f9c25ddbb737caf1c1b757c9841d7. 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/QMFMG2333235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448f63208b26c9523ba474de206c4273309890a564c0f3719953f6e52d304e73. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QMFMG2333236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dfda419fc39cd825d75666627713c5442571454642fa9b882ec56bd5a2557d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFMG2333237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bbcc6b0c9a504ae0e9485fb3fa581b9ff8c230cdbc66708c8a0f8f1a7bf79a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:50Z), 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/QMFMG2333238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f95ad534485bfdfe5200bcba2e11e3a7daaca86c298eded5485f6b4670ed27. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFMG2333239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc622217ff9207fa33ab19ee0f6e181e4488ea2d0738028f63d059b00bd675fec. 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/QMFMG2333240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03adf87271f1085d04e9985e983f0c5ecdef1a079e9bd9fb4245fdb3a3690ef. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMFMG2333241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbe0df639f351a9f80b7fc3de724d0f105894edb83f1f1adb7f15324b0fb5cf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFMG2333242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2011fd518106f24af09e5d71a4cefce1ae4a9ff739938b292596f4c34a45019. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFMG2333243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470c0031ea362d3f413501620e5c75958471cc43ace042a85ba9e69cf85f22bf. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QMFMG2333244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87858cba4c6a73b5bf9038ce85efc4f35fd99cecaf4e9e276ff198e1b8fe6f92. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMFMG2333245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6bae9f79f05c58132b64bb4dff5a3de3407a34a9718ff302b72712cce750bf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMG2333246.