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 0xf408dbdd9ee39ac25e0d38048e056710ac689c575ff87ff91aa323ee01ff168b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c26effb-4914-4a71-86c2-b607c39a0dc4.json and https://artists.proofprofile.net/proofs/artist/8c26effb-4914-4a71-86c2-b607c39a0dc4.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 0xbf19057cde394f5694df9a090b20f9e7cbdb74974cfe172e84fb52e5bd638d67. 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/QMDA71451190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35864bda2bfe94eba8a2c3bcf7aafa79eb391b8514a6069fbc2a1bde0a5ce5dc. 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/USMUR0900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3e024e154c65a3c7a8af22056345e7c5a328f74c8faff063ac837dfce3ec2e. 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/USMUR0900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fdcfc315c834d72769eab3a82c513fbb2b8969eed53bfd3996299981740801. 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/USMUR0900034.
Lothar (feat. Del The Funkee Homosapien)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef748619b54d09673915f7c1675bb2743b7a55f2e43f464b25465178a5d530d3. 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/USMUR0900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0517f3fad54f70f9175bc97ec601ed4ff40ebe7543f42019172fb8df9209eba9. 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/USMUR0900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4cba41f801177a9a7de9657a69637513b2c8dd4c283af43c227427b41040d6. 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/USMUR0900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4667597309fa3d7400384b657be776782c0a1db234d3f9a5d9e958b8c2255ec4. 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/USMUR0900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e656e7bfde80dbefca14b34b4268949766a4339846d5712011ea04f1b1ef2e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USMUR0900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22153b43ba00662e22c93e712ad381ef821a71f88579baf1592e2edf46b6c30c. 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/USMUR0900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f65d9e12ab4c4d75ab4bff4b250cffa63e74ef4f3b5a133322f74f64f713a9a. 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/USMUR0900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb154ebd95f43dfb1b2cc86e71e5013abd8ea3e5b7ac1ad9f3426322a8023e77. 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/USMUR0900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90ba31d2ecef85cd6262d8f14ceaf1ced74b168309280f1b8346a675f903d98. 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/US7X70400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681745bf50054a722b256f11bafa542cb7b994c7c6a6e6855c8926bd40ea0bb4. 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/QZNWQ2548963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07d5f1a31af134995c0194fba5b4529785a3e9866f87c6036d1ef19a5a8c3d3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZMEQ2549363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4372190219da66644dc152ce46d63d4940ffc4b8d7bc27b3e26e1e8af2109446. 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/QMFME1320026.