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 0x7267763bb685cca9dd93d2279eea7338c629103c1119c290a51cd6cfe831e87e. 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/e45a091b-1a00-48a6-a06e-8db7be53adb1.json and https://artists.proofprofile.net/proofs/artist/e45a091b-1a00-48a6-a06e-8db7be53adb1.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 0xdc36c59c47ca9844b7741b555d1c2e923d453d9087f6dc21653482168c1d071d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/SE6QE2386939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae444f84dea5901e6c5fbd7313abbf32d85f191460111459d323aeab0a6bcf0. 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/SE6SA2385075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20b843b466d4d4dfa0503979421dac42ee7f615426c0f38e8ba6e6959dba503. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:28Z), 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/SE6TI2304305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacc7c94275d2a0cfa0a96bff10b390baeab5f4a86e59ad1055f632372f717ec. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6QE2372846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4879b9e1775f0ca0aaf2ff2ff821e014c430e85fb067806488d4b3f49e80427. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE6XW2318053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f4bbf57f957c73421cb946c4ca4f70b226856c58c9790ab3dfcc18b5f2ca5c. 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/SE6TI2304463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314a7a397f5123ed1a3d4707df6f03acbb834ad353661a3ec4ff87ea4b2f84d0. 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/SE6QE2395353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993f7194de496f9e603ff9056b2955b653339b44886e273ffb786014e177161c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE6SA2330692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e48b4a9d482ea6dce0100c0c17db9155e63e6d98c7a8ea01423e87ee035fc3f. 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/SE6TI2380880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaf77c2958e0f6f6319ef7e421475fa760a018935a222e857da9fd74452932b. 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/SE6XW2301248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5b474c7d5669140a99d1fb9786005c4a0d37d612559751f59a6d06bc27a09c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6A92331308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d7ac711517b10fd86b90576fbdce4d26ad2591b6d4bc1dd5d0d7b7ed0d345. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:36Z), 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/SE66N2355176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4ba8dc0baa3a871142131083d9892d299593d08a82db44877993e385447750. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SE6XX2316788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cfaaad85ba12f72420f4d06bad62cc444898b8d1f8decda5cfabbaf28bf73d. 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/SE6XY2393864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f2c9f96b10af1c5df39006e3c1c68e2154bbbd07658539ae60b97e361cc8e0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE62M2372857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e90a6ceae60f2259d091a8126ff51ed00210a02f431bf6fae61a03c0eba64d. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/SE6XX2387255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5236213deb47478fdf9002a6bed3dbb62b71ffdce02559b3a75169437a83a. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/SE6QE2486082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c1ae0abb273a193a24ba5fa0a19350f46e93dd17607372f490517f4ddda9e3. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/SE6QE2486083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdff5a2c14975b8d3e8b6b18f417382d122cf1194275d9a9572ed765edbfbe0a. 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/SE6QE2486084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0c26a5fe785f2fdc994eff3c68cbdb0a0c0b98a76b62060c8a86896d82946b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE6QE2486085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3fce9efcad659c21e6306f552ca066cf6f2c5bfbaece0d5f32032bd7902863. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6QE2486086.