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 0xec1157da058db5408991c6d62247d88ab8c0a35b3e42985a32343d019018e510. 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/1345e708-5cd7-4a5b-95a5-60f3e586e239.json and https://artists.proofprofile.net/proofs/artist/1345e708-5cd7-4a5b-95a5-60f3e586e239.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 0x4e13c732ee254b95c81ced0c153ab15cd3f6e06a4484e7ce3548e8284400e39a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ662365272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f7647ab9de757b272fbe1c135abde1d5821be69b56cfe1ee8569d0ef1dabbf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9L2360746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb17988f62e1a6c0d2e32ea7d14accf1581bb81b4bd36a25de56b30fb0d7f75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9K2379165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3acf31164125b51f02bd3ebfb1eb17f6f9710f48287f8c768ddc8b57a469d0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTPX2363428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69672d45702bd71ae4a1a7ed5d64ecb7b37311d2871b0a8de0b81cdd7615c329. 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/ES64E2302055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba12e8e803cd24d69e3b2e5fb27e3da7ddae25f90a2c8bc6651276a73175d93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGLM2341138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15702aad6ac2af7881d2870103617c2ed5680be93ba89eca663d4592dbc9dfe7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA092234450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9262ab2fc5bd0f96822847167a3d2f93fc4b77cf16ba4b409c34a70db4a72d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA092225243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ee994f5143f74801a293610525e85cb4fb8fab403d3489fbee85f347be03b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA092212123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba44ad7027e484be1d5fba8fde28f62bc4220b7201c5dfc514047b6f574feae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA092206348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b114061f4f6dcab7eff77419e6f6df90b6b30aea6162a705f3d4940aa831f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA092200929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9aa45d1136cd5d43908c6bad94f706094c8ffaf20c80ed9833fd7dcffcfee0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZN882220267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54a8a20d0c02267e3da8c171762ca0eaaab4e8ae688f0637a4dbdad948394a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES65E2100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45577e595f828880ad1ab04d9101fa433bec8780d719d2bc5de618c897baa9ea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES65E2100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c4d481a9d6439f430029e103484f316cb9821089fbbe067c08f210f3b700ec. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882172242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712c7874bd273c1f4e278d231f349987e0c5bac8438969d0d5ba789de207ec8a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES64E2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd0147799eb5910cb00481dce3d7860d91120bd2f68e181d778892a9a00ce27. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA62169610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c768b3ff74421337e0a6ee6b2c8d34beee5c2726e8a76657a3b119245b6b820. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42126833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ca6ce3d3880418ce8097090a8c769a84fe2c2f7fc8e05844c6eb062c339954. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMDA72465175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878a6e1da62fb8444ae484f11c7a95455b62ed8cc21de6ed0aafb20a610a2277. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42457537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450f86ceb3c1206692f3dc0318c75f0bf1d3f9fd4dcdcce227dbeb6964919160. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6MZ2488437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01400bd8bdf781f41c0cd826f4161ef0a6ee68f812303d675521b19e66bc8286. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2442224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe8c4af6d6b725e7d32744ec89eaca9a77fb1ca2329e9635a729a37c3d866a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES45D1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f04d9f29a8a9de43e50d7a635500bdb5d459ee306ba68549c5241d8a0541094. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES64E2307406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde3decb1b60fe086ea7990be4b4a7aeca7968518171c84658969f1726a98aa2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW2279528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69672d45702bd71ae4a1a7ed5d64ecb7b37311d2871b0a8de0b81cdd7615c329. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES64E2302055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8245019414c115b21c7785540c562db69690ef31dc44dd755ef350e92cc389a8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFMF2103137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa699eec7e049137ca176d700754f4df8edea139cafbbfcb08bb2dfe4b16e28e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES64E2307408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2870db0388eaf148f7c1e366785512de85774a534fbcbcc607d146e194c9292a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES64E2307409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e690c2acd27afe97f0c65f038b19df516be87ab0706221bd3b7c2868717639. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2024610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8d868e266edff37918f1dd6854b88c6521d771088b2b444e403090e284d44a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2307410.