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 0x632dfd8344da5fc486c755bd5af8de2de85fc1bde8073775494b7ffb4a97ed8e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e09561b-9038-4bdf-b269-9d03afa54906.json and https://artists.proofprofile.net/proofs/artist/0e09561b-9038-4bdf-b269-9d03afa54906.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 0x5ea417364ac61c126d7f3da8903c93e5a3d58db2b1f3f05b877940d46f3afd4f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL1975976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe784bbb6ae734d87bfbaf54c873c1acd2bac46bb0d74ad8acd4503981772c3a7. 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/QM24S2107358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd317b730035884f5079e621894c79f3dcc85d80eb9458c138f53fd4a13afebcd. 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/QM24S2107356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637e8fceed3eea4a3d5f989857a2b4e768833407111d5d87279c98d799cd660b. 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/QM24S2107355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217be5b98580be884b64c4847c780ebbdd5529f2218b79e7792f83f185c61988. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S2107241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b1b3723ada4942883a279aa7b17e8b88937e1547358c2c6858b2f00487663. 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/QM24S2102431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757382c96afc350833c90e93988822eafc617469c6da03b02034bfcfb97ff474. 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/QM24S2102677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb9f4807308e632cd114a15230f356d66fda57e9a6916d665f09afef2213ac0. 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/QM24S2102741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd573f4b516565b3d0a108ed304190cdfc1ed2977c02bebca818f56ac97bd3cdc. 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/QM24S2102743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b1b3723ada4942883a279aa7b17e8b88937e1547358c2c6858b2f00487663. 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/QM24S2102431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb9f4807308e632cd114a15230f356d66fda57e9a6916d665f09afef2213ac0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S2102741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd573f4b516565b3d0a108ed304190cdfc1ed2977c02bebca818f56ac97bd3cdc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S2102743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624b108425c97affa366081316fef14ee0c7e1c507ddf293b8c00f359369baec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1975968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad0c01d72ac8b362edb0b6de83fb950e5905bc9f3a302e647596f76ec518796. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKPL1975969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9bbf961aee90032ad4ad4b8a781bc2e5ef21417b9e94a876a48e17ad90ffa8. 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/GBKPL1974799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92370cb873e6155f8d5243c4863c91f655ceba940c882e6f015e00027a579945. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKPL1975972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2dda806e8226e4c297c7e015d4fde2378d9710ecfb8e45e2e0c4e301f2a17a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKPL1975974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dc014893381700eccc108611bcf3db69ce4b876c60140a9988e84b4b4261c5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKPL1975975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea417364ac61c126d7f3da8903c93e5a3d58db2b1f3f05b877940d46f3afd4f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1975976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d94ec407e35f9474459538a6ee3b39252bcfabad91dd2971fcf8c3b3b99471. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKPL1975977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8702b4496c5afdec9c7d50e6732e5b004ea6bab05585be1af49151fbc95a6eeb. 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/QZ9JZ1785961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21f9784bc1064a2653d7dd0664ac8583d35c19d6919bc1a9f92b24c45b096a2. 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/QZ9JZ1785962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd11ed02a80ba885c4677d46a35a0f66d0a2bd9b6784ddb4cf44b4f55f65e4ea. 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/QZ9JZ1785970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcc92f3c2b556ff6eac3e5ffa295d5a011b9d8f05cfd3a307acfdaa64188607. 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/QM6N22297421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217be5b98580be884b64c4847c780ebbdd5529f2218b79e7792f83f185c61988. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM24S2107241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b1b3723ada4942883a279aa7b17e8b88937e1547358c2c6858b2f00487663. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S2102431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b5c42e8bbc2f00cbde828906006d2a7905c3521557365a13ad27ee7b0e3050. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6H2070337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d686dd17653cda936e08f0d63c8ff448e8d54c50cabcc685ee3131a98751e7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6H2070338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9182546f4a92b51cafc1890d0a7f6c3b0e197ace643d4ccf94b3c026fe36cd7c. 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/GBKPL2092827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9bbf961aee90032ad4ad4b8a781bc2e5ef21417b9e94a876a48e17ad90ffa8. 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/GBKPL1974799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fcfe3c86e4fc442f7f2ece72d54820f61a2256b0c06a27f8f5ba99f50f62b7. 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/USUYG1166094.