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 0xb07e2ec1d267cd6dfc00ccc6ac1929c693512163c85dce6f1d08ed0f65f19feb. 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/6c281edd-add5-4f64-9108-46b66fc3d94c.json and https://artists.proofprofile.net/proofs/artist/6c281edd-add5-4f64-9108-46b66fc3d94c.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 0xba86c13429c8dab8af660169eb85ad2d9ad4ecde104a6e220169000aec49e169. 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/QM4TX1746066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af7651b9650d088eff9fe0b1eecf11b003805bb541ebe608928398ccc0f569e. 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/QM4TX1746074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215dcdb4506d2858c5383888c06bd7dbe5592243e283ff1fbb8305a8c7a149f8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TX1746076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61c638e469705109b852d54d80198997cc169bb90b1ef9635286a307e6caff6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TX1746077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d853fc5de5f56a8e5e33c81d1c95bd045d92e221421627f2b2a9b8c30a0060. 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/QM4TX1746078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b18599061144f6b2decc02749252ec56d6c645b72a7faf1c200036c48c553. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QM4TX1746081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc24b33f60053538797ed665afac798e955ab6068fc5ee429695503135e82ac. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZPLS2221603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a13b5c79f38cb3a41c4ec9148e7879061d8d393f4878bbc8d56319e7a3d42ad. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:01Z), 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/QZPLS2221605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3cb19d1d19f54a4fedabd3c94c14cd4692e40224981eb649920fb9e64447f6. 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/QZPLS2221606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8703ca9ccccaeefe2cd1be58713b394e1018fcf745d19678417186ac99dc39e3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZPLS2221610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0b91debd75b1b2d9d927cd0ae3d3cff0f7027252df36ff949d5fa54fddedc2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZPLS2287306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c20ac51b37ec95f739ec25c6c257bcfe9131298c7e24a4d79933649847feb1b. 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/QZPLS2287307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ec657c8c7b820c784d192497b198078b747fa2f4242545a4dfc3e74299f004. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:52:35Z), 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/QZPLS2287308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3f7fc764afb5ade15ff08d2b287e4f80f5b6ce8c1228a84c3d96b9e69a3335. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:25:22Z), 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/QZPLS2287309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82321cd842ae8ac2af4c7195ebf541f2d4315cca3bde39b8fdb05cd6e4ce10d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:56:54Z), 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/QZPLS2287311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d333eeef1a2772298b977e6e29718d171feb88ffd34ec1a7cdb16238270de5. 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/QZPLS2287315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39144e7a9f854be8a6b0c6b10e9d4b0797e767ab5896923d0b88503898658cc3. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZPLS2287317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57efbffb775b4b0c78d091f35aca6b1468a696d82158a1562dc5ca70335415a7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTAW2224549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934577925f166206adfc36c5feb09b1590f31eb2de455929b803b9f7161304ce. 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/QZTAW2224553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a2facccf63fc5af265b91b6208cb123946d079d8760fa41781b374f5b96f6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:54Z), 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/QZTB62284033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1800b4bdd90141e776c262d0a3407370479fb4a381b0612af21480d8c76fe63e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:07Z), 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/QZFZ42331586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a428e40223c2e9cf9de4d585e29d3d698e535e83a4ccd479d3c1b47d617e3bf. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZFZ42329321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc90124620e76cf82972da5acea4f4dbb174f811520c0fdc6114b121bd87620d. 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/QZTB82430801.