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 0x2854f25807bef2c7fe865dd7ca255013c776754e58ddb9bb980d78fe1d2ed176. 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/5901cfb5-812b-4a49-a175-aa6d1533079f.json and https://artists.proofprofile.net/proofs/artist/5901cfb5-812b-4a49-a175-aa6d1533079f.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 0x803fb8a7297d13771c037926e7d7cf9a4dd8bb8169d6db9a56d713b0c21b6ec1. 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/USHM81989433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298649b198ebca111248a29c60383745531bf152dc78378137cebc92dd531ed5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM81991291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a13f3ccaf9e7204d884f366afed66e0d7e3ad329b701de86596625d5cf455c. 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/USHM81991292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85112be860bea6207cbc30f8596a5b808d4c9f22165672f69ebec33d2256c48. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:16:36Z), 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/USHM81991293.
I'll Be Your Girl at the End of the World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9367463f293381a88e235527efaced3063d5d988f2cb5e3e4345900a5e5b106a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USDY42026169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717105f5f51fd74108f8e0ffe06bae5000b835b685ebafd976e1c1015af12ea9. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:17:08Z), 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/QZHNB2098808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae62b1c09595f86531530b8f0ca22e5ad51927648b917ee5a681409667db94ae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHNC2000359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404e711ce7a0e83783656d8e2d8777d68b89dfa3efcb8bde068cf85149219a2f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZHNC2026121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e372c9b283d8df328fd843b90015c84d36868e214fb50db35692604d107bdc1. 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/QZDA72177947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14b613ecc5d5be4db8d91a583dd951c4657e7a5e6fd4b73a5cb66b770fe51ed. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA82193746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719a5cabdd247cb7a821435722bb03919249a160c4c0f0540ffee3be39281bd7. 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/QZFYX2209567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25baa6e63d7f70040b9957ac7f759d24704e75165629dc3ee6dae8de7cbb0ccc. 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/QZES82261508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b912fdc6236eca1e458fac9b5fe6adf708b8cd556bb6a42b48865d33796f92. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:52:43Z), 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/QZK6P2226130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad6aa1cbc8bea323e7a1486d3e62354b528237ad821d209b7d962d986c32a73. 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/QZWNU2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f4ae9836675e20e59c2068cb8a30964be4a990e5efced8f54a4d833f2c40b8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZFYY2390909.
Songs From Sweetwater (The Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0424b3d962f3766162afc7cd4a339d8fdbee31205c4e65f2ea04014c297f478b. 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/QZR8K2324008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddbbc9a5ee48126745ab0218b449d05eea6bfb82cf3faa7792d5ddd4353db06. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZR8K2324002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23cf45c44051a4d1905a8371c5554f2e1126436a65bad96ca553cfd870bfe22. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:39:47Z), 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/QZR8K2324014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553b926d3f75e05e90270db94ea1ce01b17a18bd42f2789cdff17e2bf9f9e828. 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/QZR8K2324004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a965c244ea6b8bc788c4f8e42d77ca293f5f1495d00d79ecabe90d2ab8653ff. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTBA2360255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeecb18c0b5905d83f6cd9e5475aa52ec00578a1a974c8b90f29311d5bccbac. 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/QZZ7T2416489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe99835e7b9f9f1346f468744d70194da49fa6d69d7156a837d114ead1ae25fc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:56Z), 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/QZES62525478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeecb18c0b5905d83f6cd9e5475aa52ec00578a1a974c8b90f29311d5bccbac. 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/QZZ7T2416489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bd72fe4c634a517ab1da631954918bcad8ce19b8b26e56fcc5100ec98cf9e7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6F2519935.
Sweetwater (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd6ded7bf5b36ff0bc71cfa2ab1253d9f7e61eeab11b4306b74071495bef665. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZR8K2324001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553b926d3f75e05e90270db94ea1ce01b17a18bd42f2789cdff17e2bf9f9e828. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZR8K2324004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0424b3d962f3766162afc7cd4a339d8fdbee31205c4e65f2ea04014c297f478b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZR8K2324008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c5ad0d60ef3a8cbe874dace922b3f3e244092a426af169c67a3ddf3965eec0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBDMT1800185.