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 0xa42e20aec66e4486bd6de5b80c77607ec5a57ae02e2c9cf08dbc156addb5985b. 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/a889b5af-08d8-4fad-8d68-380b30212065.json and https://artists.proofprofile.net/proofs/artist/a889b5af-08d8-4fad-8d68-380b30212065.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 0x69306302be3d6c7d2bc914e9bf45e0d7137081ab6f25b945bd9f8a7de6240079. 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/GB5EA1502387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b5365e8e79106ef5ffc2ed9701bbcd4b2fe4d9b79108fc00a930f7a2f29d1e. 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/QM4TW2018201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af7cc37c3d41504a11d2b82f50c795717118fda01d776a38b204c61bdee0ae6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:25:50Z), 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/QM4TW2018205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d259d6542f1103d8be68a061350a4b5c15b8fe9df198fd8b52559b2e80a8fb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM4TW2018206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9303b17328e3158b40fd3aa2e26ee5f645e2a7dfccaf46790b8327c402c25a8e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:06Z), 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/QM4TW2018207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3575634225a5fe35fcd029dac93e0247ea52cddecc84ce19de0b0e0bf6b6fe67. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:43:46Z), 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/QM4TW2018210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcada1f54e799a45d6584146ca84a3a39f9e0a2d6189d55c08f9136ec8a3cf875. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM4TX2285276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84814cf9186e66d14c991edaba4259957a879f01dc71701673384f8052cd6961. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TX2285280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6293a8a5879e0a28fd64044def95d6e7ff575f9b96e8e2d19c5553f3cb8c18e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:18Z), 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/QM4TX2285281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec43077ea45e74d679a36d48c899ad600a6f303caba23cab005bfefdaa97a66. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:22Z), 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/QM4TX2285701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89333d4eadbe205cecdd064737e750264146e621e1fefaa6d0f6c137fb06f467. 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/QM4TX2285282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685d2c5da8e9f2dc719b750f3ecd6f0f762067dc9e50b76fda0f54aeb829babc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMFME2346490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b163654dc1fa8b8feb0a1bb57a5f2ad1a50fffdd5caf93728685b9ebdb3cdf. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:33:24Z), 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/QM7282058346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b5fc90dc1353f37924514810f3e9f5d2ce43fb8908ec674cdfb0768d63fa7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QM6P42062783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2d99fbc563535df677821236b3e6adb910de7a006ed94af0e576d4ffcd853b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFMF2352237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd90e8cd9d0c1eeac2843716d17c7e3a9292fc82d73c102080a646310132764. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMDA62426922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a7b82fa5e541c7396b15dbe506dda66e6da6ec87b82ba46dd8182e197cd8e5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:41:22Z), 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/QMDA62490297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622fe2704f21cbb28bad63ae901a9e242ba2158b2b133c37156859d214ad1b3c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6MZ2543427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a6c39f0631064689a37d3738b7a2827d15bd39b0110457b2044b858efbedd9. 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/QM7282577622.