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 0x066390a168e15a287757721bd0e8959e7ef65308dfaeb95dc2afa07f624a3876. 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/f148811a-f728-4b94-8646-8120306282c3.json and https://artists.proofprofile.net/proofs/artist/f148811a-f728-4b94-8646-8120306282c3.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 0xc8344f211c607400f0d4004bd9d05b9b8de57750f122abe201ad798ff62018af. 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/US7VG2520121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050033aaa5725363398c68eea7b5c96ced49160ec3692d326b1beaeab69aad19. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US7VG2520119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b39a57d85a432b5521294209596157da2c86133045d536adcbbc05994f4174. 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/US7VG2520120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea16a79b44e5463d6078232b86f0f7712a7ea97bade761c91aa053c6eff4b9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US7VG2520122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ce1104f8e22160abcfa33caee563a9599e6811833f1be3f8feee3a354cc8cb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG2520071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2b4b79e13afe059892fbb71166bb83c6a13d5aedfde99fb55b15efe47a201e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:15Z), 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/US7VG2520072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006553a9a15274d1d24196d7835d00f0a69a5a46acec9dba0dc7dd64cb02977d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG2520073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b639a9b0c2dbf9a8eceb55b6c74ae23bf14bea53a08807f3bbabf2df6076c9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US7VG2520074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507af3ae778c5d517e88e32e6a0c636bd99da66ff481ff657d9856533a5b9fbf. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:30Z), 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/US7VG2520075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343a4285a79402cda34fea9419010bbbe5e3eb1d154ef7f44de724f916eea8e7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US7VG2520076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe67a537c0b5a9c90a05b07cd165241ffcd53ad480b390db9069736457287363. 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/US7VG2520077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17f40005a6d2a8d2db7e0f12dea4d5b0d580a2cccaca05f973d81b580ec4d3e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:28:56Z), 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/US7VG2520078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38515dfbdc1292f597ca3d162a55473511e6854efafacead7e7cf65c36c0c69. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:13Z), 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/US7VG2520079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c38754299dbc73b4fa38237a26928a6098fa6e4e9c2c38e191830409b6cd07. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:58:38Z), 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/US7VG2520080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4efbd0bef7d620db4a7186d8471691c5df3fd4101aaca0aad2d9859eb549a1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:26:02Z), 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/US7VG2520081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd706181761c947036b51894b132ab9adfa0d6211599fc488b3cfffa726f8d3cb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US7VG2520082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eba80561e3672d146184f2e9e66cbc0304d45fb1d8fc4017c2b6c28b31d6e3. 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/US7VG2520083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef05f4b6c2dcffe616474367d04405695fc811b8fd4393c96b714b8dce21d32e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:23Z), 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/US7VG2520084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0963a346b4a445a5060bee98477af35763a7961f53606d38bd03228e53a89c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US7VG2520085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b75bfdb16c409c8559cf4e15f981980e5b7d43d985007b9c6f57dace619b18. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US7VG2520187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ef20ef51142c2d3770de0089831e9cd5e12face73e562c76593759c0e2ddf5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:32:29Z), 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/US7VG2520188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7e3e84a5cd2909493b6fec3b0d5478b669204d279886fc74db48d9a6cdb92d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US7VG2520189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d35b689a4453e50cfeb176a4b123fb478efc84c0bf1a2d013f6c51c3ff640c. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/US7VG2520190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b91e074166f75a1878497444df187ef57a7e550f04018b4dc0d0352ce7370a0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:04Z), 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/US7VG2520191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583d44813250aeb2598b2998f1a1a74d1c4e96e1c55ab3734b0230fbda4684c8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/US7VG2520192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fd03dfd7169921366526efecb2718998a2644ebabe9e3310d4e626c822265b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US7VG2520193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8af0a8e5ea2da76e87169e66002edbde7178a930a03640fafc4cf9415d122c2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:08:18Z), 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/US7VG2520194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add0a3cdea31b39726f76884350aa9895781cf55aacbb261f6eb49eb12be2e1. 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/US7VG2520195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2969cc22c727aaa5bdcdf894fceb17b322bc8cbc001c9d0cd27ec2507671d5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:14:53Z), 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/US7VG2520196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f0e85339211654f27f098492ad7da8cf45d0341127c9000de798cee3c3d547. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US7VG2520176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8751edc582cce569890d74f93dedb2039fcd3e8137c913831eca93c5d94328. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG2520177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c54969340e76669c649b41a84b86d6e01a3ef86ffd838a5a334741715ffd496. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:16:14Z), 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/US7VG2520178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf3ef9617a5efe1098ad48dc6d13f5f2c6c7cc196571d6936ab06b9afcfa6a. 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/US7VG2520179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1132743370ee3ad5a3fc30cca8c2bb43474a0cf080ba2e80c1b6a18f4def958. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:28Z), 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/US7VG2520180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf699ac5a133cef10a487b48a460728c9bb7a06b77dbb47707f4e2d0457d55a15. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:54:11Z), 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/US7VG2520181.