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 0xd1488a8ada7f5a088d10c14de474e34da66227e07147e4636364372b91f82a3d. 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/8269dc13-e326-4f7a-881b-fa1248f58da1.json and https://artists.proofprofile.net/proofs/artist/8269dc13-e326-4f7a-881b-fa1248f58da1.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 0x9f03c88fa34d7d6fd376c40a6aacf75ac9a11ac57b7136f5a2ee832d2bb5a234. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:55Z), 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/QZMZ92568126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cee58da4b69a9ec848f4ef3507c49ede63846c22d690b29823af520976736f3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:17:07Z), 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/QZMZ92568125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797d9744925aae1b0fc2c7c7d4688a5861318727a1a58a22060604b26c40c20f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJV2527326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2952a638ba319ad94db7180ccb499ad3bba28c01be4894a782579e0ecd44ab64. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNJW2520559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96766bffea4e513d32fa6f63d698b403836031afe94b229fe749b80d7b4c9715. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJW2589121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2794e468ec24bdca09fa0bb0086bbc9909b454c8fde325eb9548c7309ff4d2c. 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/QZNJW2588822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3a01601426fdf4d07199d4ed74d3e4a7033d669294321ec0ba42246e3ea72e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJW2589078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc47d66a5bb7d9975e948ee5e8ea1102e361124f02976ff2398094145de341a5. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:35:51Z), 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/QZNJW2589165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93168908353b74302e44c997c9f43a758400d9c73be5e31719c6f270a9c03d91. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJW2593380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb760d5a4a029d0f2ee41ef6e5bef52fb2ee4d9ad7b8bac34ad1fe724dbaaeaf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJX2510771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f6db94a8c58fd3f9252147ca0b3156bd35f3cfc1f274e4a48ee45a61be038. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJX2541633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60c52400ecc904ce5c9aa7860ed88e3aaa20dab0e76dd4862f92805ccd45984. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:17Z), 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/QZNJX2541979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49bae3e358173d0c4fd316fb58f06930e171bbeb5af81feacca1bc643f5c7fc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJX2541973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1873bf383053d38a935de76a6cdccdbcca737a1f69fe408eedd0f0d004515376. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNJX2554870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c1a8f5dd697029c5785c2a082e098546899765ed6ad94857beabe6522f4099. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNJX2567499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a5654fc2ec6f1dbb8888465a7dabea9f21f413a3e02e1c67446a0b53d323b8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJY2506061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730eee3ead16a54a98849796eb67001315428f108232406ea9806fec1c7337e8. 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/QZNJY2539585.