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 0xa3168aec77c6a47a965093597a79f39a551c92ea6c0115b384511bf37c7e81c9. 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/aeea89a2-066b-472e-832a-6220a8ae0e4b.json and https://artists.proofprofile.net/proofs/artist/aeea89a2-066b-472e-832a-6220a8ae0e4b.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 0x140e1e9f6f39faeab6fb86fdce5d41eb81924deee23c83b4145d2b78524a2bdc. 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/USDY41682722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fe3c77a511f5dee9d6195daf692d66e386b9341c8df3b9f967f5866d49cac7. 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/USDY41682725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35feeedb9c3b6e9ad8a67a7667bdf13eb918d793b009008a1430f56c281f23f7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:34Z), 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/USHM21786131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15482efc291be94ebf825f079d3890af5a40f1580dc4d7843eb5a5f25e138e81. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USCGJ1802605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298a130905edebcf4aba8a2a62036862d21fc3376a38c597837ad64b41644064. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM8E51400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8723b26c0a044c36574314fbdf9e71693825bb220f22eb3dcdd72c875349cf64. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM8E51400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e85a4004edbce9a6b3512dccb225ebeb9fe734add6f5202bd14b7b5530799b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA2B2103949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113ddc2deff2ac4941a800dde25e1ab5fb76030b8992257d30cb3b0416cbcf1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2B2033449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11bad980188b3ce55f67d40f4afd83c1ca65f3d22553599c389af5f926714b9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US4GZ2508001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11bad980188b3ce55f67d40f4afd83c1ca65f3d22553599c389af5f926714b9. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/US4GZ2508001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062f5169af7d042cb0cf42f04389da9a8a94a0602fed3cc9491052ac0e5f02da. 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/US4GZ2508008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da860842babb130248b75bf2338829bcccc50e50e60fe3411b79824620dc15c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US4GZ2508007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11bad980188b3ce55f67d40f4afd83c1ca65f3d22553599c389af5f926714b9. 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/US4GZ2508001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc878a4b742e2bf5422e23718a0e7aa715be627341812b19805fd80a2fcf32a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM99V2503201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ee1755376b7e3687f7242121fffc5d011d30f4733c74d25c98e291669c4d0. 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/QM99V2503202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd7c30c10740af8b0f2b9ce326dd6b996a87254ce92b964f50d24cf2c1e85b7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM99V2503203.
Tangled Up In You - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abf9f5cf1eda6b68af6fc8aa4b9a403c9a95ef5d2eaa0bb037ef4fd85ea9656. 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/QM99V2503204.
Del Cielo te Cuido - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844d418dd1b6cfbfc6aeea14156eaa3e456871e7f23fee9a650bffb0ccc5ed21. 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/QM99V2503205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1769b06d66ff4bcb85dd416645f6e9a444519f1ff2fc863c9a76c58d18c6b1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM99V2503206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e85a4004edbce9a6b3512dccb225ebeb9fe734add6f5202bd14b7b5530799b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:29:55Z), 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/USA2B2103949.