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 0xe1445f2e35c0f2cc5c3b629af3e5b5ed876a7cd9c8f374fec8cf63bf41e986f0. 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/05b15b15-db8f-4556-bed9-e116471393b9.json and https://artists.proofprofile.net/proofs/artist/05b15b15-db8f-4556-bed9-e116471393b9.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 0xa275f6044a2a466478a9a0a180ef3572113c2aacc8a6de888ada887abd6b48e1. 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/USHM92054870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0e4710c4a7eb9ec605b68ef6304c38c85a815c4e6350b0f3b8856145858402. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USHM92054871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1888b005d4704dd38695bfbe626f30c4846e5163e3cbb53e7759ef7dc96fc5b7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM92054873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5e7552a66a115a6aa1102235ba6f33f45ef9d5b5e5df2296a5a5790d3b1d54. 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/USCGJ2182612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d772cf1c9aa7880027a53279801ddf32cd6f7756d3d441cf038fe0c6c5b9ab. 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/USHM92152512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2874515398bdfb3f5066d25a5bf828a170e55a3bd37fd3ff7c40ffaf5bda1a6e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USCGJ2213573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0876a4695a96aac869863ffcb95415eab022211598b6d21ac385b24f5e7f5781. 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/USL4R2117131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d772cf1c9aa7880027a53279801ddf32cd6f7756d3d441cf038fe0c6c5b9ab. 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/USHM92152512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f008288a0ee7060ed481cfef06aaa5ea84637af3c98b03536b6c669ba3180. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USCGJ2213575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5442213da4e33bfdf4707624bf9abd6499a15be193a65ed1ae6db9e5f625a3c9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:15:16Z), 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/GBRKQ2296433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb183ecc463ee5e8979684b65e0f73a8cef7b0d920ff0b4f5b34a9019c014cfb8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:25Z), 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/GBRKQ2331898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9655c4920a3a7b192423004694d343246fb8764ca1a1955f720e3198fc07717. 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/QZTRX2355689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbdd9356309fdff4c80364f4545d91402f28d673593307abd9a4ceda917c653. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USLZJ2345312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b944e96d0bb9180d802e26a38dcc3294b4a121ab51dc8944ff64c4a258aa37f. 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/GBWUL2394468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5f51ae70d9ebed040b46ac2c85af8c016b212d6abcd8554e7793ad365bc6e4. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBWUL2447516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab938a2f0f3df2548be30a9b23f81ee0d05ebb02af7899034f986e42f72251cd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBWUL2447541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5f51ae70d9ebed040b46ac2c85af8c016b212d6abcd8554e7793ad365bc6e4. 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/GBWUL2447516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7d3cd81e35a02e38e1b889a2999ef17214f84b6b26718330c399ff51984ff7. 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/QZWDD2417327.