1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6f2a5f0c138599b1d54e23e808af8410120c2ada56749dd9610270996f96cea1. 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/493b45b1-c89f-451b-9126-94d7e9e1b5ee.json and https://artists.proofprofile.net/proofs/artist/493b45b1-c89f-451b-9126-94d7e9e1b5ee.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 → block OTSBitcoinBlock must exist at that height 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 0x9380faad847985103d760acda73470a16cc917e0fbe62078622b650960abecc2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZ8WX2220256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152ff0683ae2faaa6a408d499213118f7ec31872eae093168f6b0cb7f9337428. 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/QZ8WX2226376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a317264803c88800b398e8558958f6e2dc0599dcda14c24bc4d74344a82c0ee. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZ8WX2226605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bdd9a9cea5042303f730b9c0e50a17caefbeb99b4630c58f31ed0fcea39f73. 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/QZ8WX2228354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612afffb2e3d5126e3f21d35258d52178ce5bd9775249b850edabd30463eae76. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ8WX2231824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5879acb6b9ae21b665b2bf8199e387b76112631165f8c2a3071695f6710deb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:50Z), 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/QZ8WX2232023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e6043a6d1a2efca5e99ae566ce2870a3979ab410f644be237176dc62268975. 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/QZPJ32288853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd209666611b107293b4eebc6cde358a1526427f3f01afbffb3ce6977833c8d0. 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/QZPJ32294485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73727464881a56e8319687ca0e5912a18ab18be4b4ac417fd2d111e8dcb94b9. 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/QZPJ32296144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62b70a4709c8489de4aef9cb5333bf17e7447fe46bd29b03205558fd7f60fa9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZPJ32296145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9168060f6125515f67c15839b5e38007296757132b05059aaec47d0eaa54faa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPJ32306869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfdedf4e02c86aee23cc66b99b6582b59e6ae571629ae2f4a2d1b809b06fb23. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPJ32316074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc924c9a4e955c2b9d0c7324edb57ff6ffca804d51e305fd767b7646ae524daf3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZPJ32322493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc35835cf8cee3cd7120f5a9b450054e0de6f662c1b200cb99a5f3a080a230eb. 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/QZPJ32340453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfea43e6a0af9abe6ce86938b4a6feb012f9e2f513d2596bebfa151a82e0a0ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZPJ32340454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d8ae20d1c5a47948eb5ff14cb927f0a79b64866b4fe10579d114f524d37a90. 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/QZPJ32378757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918f0155894b34f2abf0ad652db6eee6c42ee85d1ee84031d8abc443e2c293d5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZPJ32390096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25eb2a214e339ad78612af8e6ab371eeb99319421b5840a793704ee504c3381. 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/QZPJ32396603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ace3b6e67f11aa27915050fb88f2b0b136f1f1d05fd608ec8a4aebef1040e56. 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/QZPJ32442132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411714bf1dbae78efa75c64f2b80535fe227145ec573fa26f41f77f1baac5f91. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZPJ32484164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513886a2ef7e70b321c74aef8a43b399be9e49c77759e73ff940108d20a2673d. 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/QZPJ32486235.