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 0x21420a07aea55c7629f4c7926471b042104dcb6cb6109d8fedbcd30141747de1. 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/d6c91766-b06d-403c-bd1d-39e347c6e6a2.json and https://artists.proofprofile.net/proofs/artist/d6c91766-b06d-403c-bd1d-39e347c6e6a2.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 0xacfc69b8a98a2cb57c3d692aec97d462281d44690a1df4b852a180f8fe468ddf. 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/DGA062405596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6c31057437ed8a76b82cd58d8d1fefa3a89fc6180d1b55651c107da973c894. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR59R2493051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34484b64f368dcc48be68d641d81104d64d6a4df9e11f54532d5b65ae016fcd2. 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/DGA062337184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a66edf441293e2813606d889eae59de2186caf9c7152afac7b7d5ec40331e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA052316235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e221ef6c9e405de9c7f0da937a765dd2e28de02547e3dedefba5252cf266d42. 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/FRX762356815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0ca8e6903ab0b13f4d727fb4349b8c95c3002c1fa08adcc71936ca5be62915. 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/FRX762356807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbff80cd2e417097781b68f56f8151738606b0c0400533c8f07b4fd4ed7b19b. 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/FRX282361383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa589a01fd5e64b7d40ff1a9077bc9c5c5f8a6da929bd15cd99e4931ecdf14a29. 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/QZXLZ2326952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950635cf0639238de26685d8c7b95531ab02f38c3fe993fae88d2816aedcf96c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:20:26Z), 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/QZXLZ2326954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304f1825a23b9f610a5b962d466d0ea8f623681d5eaaacf544e3e77a283f6ea5. 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/HKG732237779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce9b769624e8322e708882a0159798ebdc735df341193e1fcc1cd6876b38036. 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/HKG731796928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e7e4823b45312f22ec49b686b6f5a81eda11deb48246838db32f5f4e260352. 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/HKG732138633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038edd2484bd4bfd83b47565a7dc72ee811d09c4546573687682d5441a9e49f. 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/HKG732153321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20e5ccdab08f6facf16ee4e767ed8b100f7cd9ea4f73ce69329dea5b05a1340. 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/HKG732021986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8b4e4f94093bac06639f2127e3e1863cc6bf978fdbfbb05c3a9942dc451d7d. 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/HKG732011678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd313f57059edd93c6c4dc2e7c37b2992a95ab1eeecdaf722c900b3acc2a8877. 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/HKG732001244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a07656a9e28620674607c8bda0e2b5b0e1440862b25b6e85c27de5a951a223. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732001245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7283dcbcad1dd7c20109cea09dafce50eb13b45c06a5c07419fc7478a8955b. 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/HKG731911627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde607d0f1163501fd416c2f36cf1abffb6dc74d3bd30a0145c5fec2a27b59e70. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/HKG731907837.