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 0xa726a0f32540d3a56a404f081ee285cc491dbc0e6d4e97aeffc83fe0ef178e29. 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/e5588857-b729-4b0a-8057-f121c4264ddc.json and https://artists.proofprofile.net/proofs/artist/e5588857-b729-4b0a-8057-f121c4264ddc.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 0xf3c91b4205d2bbe5ed476b3d7ab35341504c090e2a3f5310da7c3712d44ffc3d. 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/USHR21912406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868e80b5ab24575d6c44e788bb91b89e182dd692a9d2aabebe8e680afca25c3e. 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/USHR21912404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9faa697346773f58847f9d8f930d6dd22d9d92528f994d6744eb85cda16bd9. 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/USHR21912407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5aff6152fd60cdab3f16f9a65f318fb611544d0c1afe402717edd7d1a2f95a. 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/USHR21912401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff3b060d3962b99bf0dbb000b5c9456d5911a1ebfa611aa46e9869ca97ae8e5. 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/USHR21912408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaee52ba51cc3020b7c4f27d10ab01d1c0df7ca0a5f9731b1df518ab88537cb0. 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/USHR21912409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7635d4db225ea0aa0370600aef4c5e7ed1a780052096088f43dcfb95aada405. 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/USHR21912405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7e52f6a8a5a13d06dadbef1060c1de0f9aa17b4502e36aa59d8485aab4bb13. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHR21912410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f82590e3726d439d11d0ba9cf5898e86493d816fe8c562d65963f71b38e1b63. 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/USHR21912411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dd24412a2fe4875f70443a38a7c7f28eb41db417dcdfbe9cc60752c796a3dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHR21912412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7cd6fd14e042cbb4cc11c9a8ce33451ac6d51cc250120c1b0fe4c3453b2680. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHR21912413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb035898e469b94e3c81ddaeecf276b57a7888705be2dee46c2630755bdd1c7fc. 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/QZRP52408605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c6e78d251416c2d6e7d4fc03c062ace6d7e8555e78051cda7332d83182196a. 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/QZNWV2410474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c6e78d251416c2d6e7d4fc03c062ace6d7e8555e78051cda7332d83182196a. 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/QZNWV2410474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c9a54a495d3f18cde9edd50af71fb311248cc45fde41659f19f75a79305d69. 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/QZTB72386418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c9a54a495d3f18cde9edd50af71fb311248cc45fde41659f19f75a79305d69. 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/QZTB72386418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f1a0cf67e88ccc7facd050d3697e08f9149a1100e261984ca8bb3d46968dd5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBD2383166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc54b9d77f668705c246e320689e2a4095731d3c98685411d60cac851e3e26b. 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/TCAFP2191714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2207d7bc7938ccf0e5c8b56ebf535ce20c1774719981066d82bb9609710fe45f. 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/TCAFH2099297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc650b00e8e10c321e8eba83130e3cd09b2a9ff6d679df086eaaef4e81e2887. 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/TCAFD2084979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0b1d3e51a19aff591b9502fe6d7e7d5fce8d0d77e89bc0a0ae211a39323e70. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEZ2039457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0b1d3e51a19aff591b9502fe6d7e7d5fce8d0d77e89bc0a0ae211a39323e70. 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/TCAEZ2039457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cafa831107db4030adfa259cb81283538f23f7e3164d64b6ba77f707246cc3. 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/USHR21912403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868e80b5ab24575d6c44e788bb91b89e182dd692a9d2aabebe8e680afca25c3e. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USHR21912404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e39061d8fbdb0fd3a321c565230d5015a3a2a979810ebb13f0f5e0487c9a8a. 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/USHR21912402.