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 0x417453e16ddeb5ad2c6be6435ca4a2a8d74a055db951bcbd0d9c07d52468f20d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bb31af4-de6b-4065-865a-706aa838780b.json and https://artists.proofprofile.net/proofs/artist/9bb31af4-de6b-4065-865a-706aa838780b.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 0x044ead73c4261cc267ff889cd6b601d7c896fe1d9182d29bfae302aa03a5bbfd. 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/JPI102001303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a5d54c5109ccd57efa49afa5628a2d195a983ae17d69350bc07a60562346cf. 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/JPI102001304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7555b1293ca30672d889c2cb1ffa67aab258a1de5f78a98143c7531357e4fa9f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:40:29Z), 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/JPI102001305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13744c5fb925c5cc79bbee2b873610ff7fa5910e8d55af9279c50382b13f2ace. 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/JPI102001306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7e725719ca32870e9c7e549652fbcaed45aec945a036c9546558689c8c4784. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:56:52Z), 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/JPI102001307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf471d446dac50e3dfcef7e511cdba8c050fcb83685880d0cb724db5009ecfc04. 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/JPI102001308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa3e5f9a5567e33a88ab1c4bb1dbc888962c76292a4e6e1f1ba8a2533f04cd. 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/JPI102101304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e787a874760943e38a9cb05726193c70095c918277a180606776cdc6bcb476. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPI102101305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cbb100a97901115242548caab5eca1bf0cc8b1dab2aac74db767e791dcce7d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:02Z), 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/JPI102101307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070b356079cc5c1bdef498702d93e42e36ed3d0e46150ec0e89e274c1c79c5c0. 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/JPI102101309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed0f444910c10afbf0be2e1c7e036813ea013a8828dd87fb1b70031c6c934f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:31:16Z), 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/JPI102402368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed0f444910c10afbf0be2e1c7e036813ea013a8828dd87fb1b70031c6c934f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:49Z), 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/JPI102402368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30501403ca7adb5fc27786fe1a10aea63ddff9a12875e6d8a98a0adc26d6a2cd. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/JPI102500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79c8083f7c18c7bc6bcfd19787c00cdf5a556ce637c0f8728c144516ef63582. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPI102500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838b8e81a8963c0cf0107ffb69ebfd3c9f464095bc122037521a52ea3d39f24a. 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/JPI102500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2d49d51c3628bedf6a7599ef92dd1069795c0c59b8865c08e95c3daf535f60. 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/JPI102500117.