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 0x8743461f8823afb60a36c860d82aae9e955153db47adfe9793b9d678f9d4fff6. 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/94efcb4f-6ba4-491e-b27a-34979fa07fc5.json and https://artists.proofprofile.net/proofs/artist/94efcb4f-6ba4-491e-b27a-34979fa07fc5.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 0xe8ac7dbfd88ebb3dd486787c838be8af88cf6855f76b5f37d4b0172de58e1a84. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFMF1563264.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d0d3469f8aaf493c180cb0ccdc9c91aa82731b3ebd0433ae34b64be1858271. 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/QMFMF1563265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a073d48d422011dea6a329330c249a322351125bcba761af1a396e2de22e24. 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/QMFMF1563266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76501de9bc522de9b7fe13adc645c3c7633481d5ce376959e9088a09c4b947c7. 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/QM6MZ1930468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e101baf04e0016f3089e9d01f88af4e7b69841b03635685a0b9a027160e4545. 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/GBMA22096989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e4a7d0fd9d6a733e22c394b2d3c8a1e1330df4004210f5c8b29a6a92703808. 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/GBMA22096990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4ca110db270082e74a3154d6f047a615118251d23d6614aa7b205e08ab71d0. 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/GBMA22096992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fde8e72f805ea1cda3343788424145e3f241c4f5f7197aefe1e75dab24e692a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBMA22096993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24748c2a238af328048d68b1ef2951d8aeeb617bfd0c2e970df1c9e346fcbf28. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GX3Q92096772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3f6faa91756694d7159efc7bb94ef68d9b8438a29c53cd0a428223132456f1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4TX2394731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dba62379f96439d59339f155b4351784a6938d20aabf340ef3505e9dbd5fab5. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/QMFMF2215228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9467a2cfd00cefe587ded3370f137a6b9300dbc900b19dd45ac93e7aa9bc7aa2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4TX2394736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b93b5a5fdec79a7e0a55689972e3f23cdc745ad82744f501820b16cca01171. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QMDA62228384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695afbac47498c3760e8c3fd830c7f5f6b17980cfc6f3132e2e9f5bb1c39382a. 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/QM4TX2394742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e0b9b4690ea191ed71d842a0318d2420315b2d91f2e129bc82a1bccbb6fe10. 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/QM4TX2394755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7db69a82ae92bb5eaa692267aeb1f07f193118689b816517ac36c561aecd62. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:42:47Z), 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/QM4TX2394758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb7cc2ed17b6f51a0faeaaf00f404c8408829764ca4171a16771ba6634b961c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:05Z), 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/QM4TW2380393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0853e638210f5607283e517d18304e8ebef924e81b9e32e6056937aa11bdef. 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/QM4TX2394769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce261098cb320dcab2dce5d5150c53557ff83c4a3b4b17c6f3682fa9052f53ab. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:25:43Z), 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/QM4TX2394776.