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 0x73722f1c32c94d0d77e44181db8bee37709283b39ab88fde49ab606aec37053d. 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/bdb43a40-51c4-4a47-942b-61ecc0cc03d8.json and https://artists.proofprofile.net/proofs/artist/bdb43a40-51c4-4a47-942b-61ecc0cc03d8.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 0xa89e0d51f0dd3948c2de03b3284f01cc76820b71b01aab02ec3fe11b5e4d39ca. 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/TCACO1651155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755a2100fad9050ad998fe348b85d899017a213d66bb2dbd4eb70af79525fff7. 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/TCADO1851640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f03ef4c04672aabc1b2b47dac8fa18d89206125863ec2eca053dd686e282ceb. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:30Z), 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/QZHNA1900561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254b7965aea57a4402fe0da44b393f4335c37843cd7715e7ca3283cd12d4714e. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZHNA1900565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043a212091c4dfcd8a3b7000b2c291f1c1738f85f022edad586673f479bf866a. 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/QZHNA1900567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae251202e631db7ef29c2c97a6c14e0aa87f5c8823310b163cb591cd7c3a4ed2. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZHNA1900568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d40114dd87275633c7b85b13f8e264363bc59396c482f411043d5abdd8673f. 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/QZHNA1900569.
This Time Around (The Second Time Around)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c668ac86394123cbc8a9be4ddb1c4d4c85b1471220ed4fd787bc1f2e78dbd4e. 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/QZHNA1900570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a7feae71f799160fcab91b79557619a4f3fdd11582004dbf4eb8d540574a10. 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/QZNWW2288233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca6ccba37c9abccd7d03a8a03d158a914a2f9246e8bb56d8e35a0d1859c76f0. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZDA52349701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec579373ce2cc27047ad7aab19c6e6331a84daf40ea647375dfd0ab99b9131c4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6N2362487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafc4ee96a322681fb7272edfc5ecd89e189137adb58f93ef5b372e7c311c524. 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/QZK6M2350106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6739a2d91d15e38d626bd721530e6af6f2ed432dc4dc6f7b2f428b0d6ce9daa3. 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/QZHN42360489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a8d357cf3cd596628e388f20cc44cdb9a96425ce4768176f65e39cc9d28bdb. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:23:19Z), 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/QZNWU2311125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b107c15bb59017dcd3b43d20d0e06e74cfd36d9c11bca9ea24c6ed546d0a012. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZNWX2421468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d05500784562aa2c757313c2294a259205e9cb21aad9f24c4098257c886b57e. 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/QZNWX2421471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09bb66eaab01632d5ca9cf289fc1846d4ee7771f98e6a0bb4c7e2f65ec9c0d0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWX2421472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09bb66eaab01632d5ca9cf289fc1846d4ee7771f98e6a0bb4c7e2f65ec9c0d0. 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/QZNWX2421472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe923d73dbfb4c80687f5b99ef8aec01d0ac453bc7d27eb7ae9933a98814756e7. 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/QZNWX2421473.