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 0xc7d9f24066dc7c5322d0ca3eaf4fc706cc7b2286308de879383a15650d73a3f9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee77a491-a57d-4d8c-86ad-e955c435ec84.json and https://artists.proofprofile.net/proofs/artist/ee77a491-a57d-4d8c-86ad-e955c435ec84.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 0x503f2a5e6b6914af35d15c3bd44885c5964c55f19fb833a682e57bdf67f94bdc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKACT2131325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5447227c4718a2314c3365efdf7093c749ef4989398d219079639f168a419218. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKACT2131326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532becebe8750477de9983ccc064fc13368b4115dfe7cef38192a6bd5d2b3f1f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKACT2131327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fd0273518032c1e1dbe2a068be9849388fc7f55399bd8e0ddbc578baa62575. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKACT2131328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1d4ee7817225e1275c02ee2838f27b825656290bf4b1dc6f945877e67bec4c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKACT2131329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab5c3bd3b61d3f9809ee3075e3fcf106cbf24a66ba994c5e05ba17d07f05b11. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUR62000819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f851e7048b333a104e2c24f7a480708f741caf789d4078123582d74486982cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUR62000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4537ab3ebe7403cef51bd5be9c0a05c99385b44044ab2a19bd896fd69637a813. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBUR62000821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31af00edd73a2fc75cdccf8d13b85c36d3b8957fe6c27a9486aa4fdcd9517830. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452425220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c28dc04739a827fd5a400c361043aae6fc05184d1c86b1895ebbd03e88f380e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2437054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9471330486664441f8a344c3327af1810e57e098a86a9e2cefe4493e6b107552. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X2451338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c890dbfe01327575a73e0e66f633590efe152c1f15d96f9e9eb9486ccfbd480. 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/USA2P2359430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2a6664bd32669346dab423308cdb68e297c32b4c09a9da9d171f828c37b06e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2359431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8064001f2eae11ce71e0f3050b0759aa05676881cb694c8c6b559c3da7e3f889. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUR62000714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ac961c83f5677de69d52193388ccd93c69238ab069524b0528a66ff8b260f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2356673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b2b4aadd6d916b2e9ab8e517568d98beeaae4608534f851d4c9473b2c2fe92. 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/US39N2311050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9c81a2142c5d36986aaae997606b3fad9fec37ff03a59d06a870932dca6f4e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US39N2311051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6811d7955dac4cccc5976502dfb30211805896960bc67bf2a1375da4aab06545. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA062352018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a8c29f03a59cee4d6dc659324c7f916fa2ed46f5ace454e4789656ea803e7e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBW232100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93a182258e99e219cf28a1bc6724066cc9a94dc7b4d584a3f27fac98cd42620. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872372440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532257d5e499dc003708f747af44238e3288db0a093ba461c061d4d6a702b5f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX872372441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ce6243346ac960fa612860bae58f8013899b9223ec2b64031fdec8e4f82b48. 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/FRX872372442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5e4920467c4e09ebde46d99f8e056689ba7933321410b0cb1a4a4080c8675c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEY472275526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c622f856b9f75be5afd5a82d8bef952f231eebeb7d7cbba65437148a032be7. 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/US83Z2211782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c65c9a7fae7aaa53740247f21cf16df0b87225a87d1d98a97acf32ce362898e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEC33500546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860d431a845254b1600bfa55c2a18097f86904d3b65d84a7430c0d34e950cec7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEEC33500547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9a0406bed91942d7681d8ab2e82024d32f608917f02c6da5eb290993051658. 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/DEEC33500548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9617ee0abb71e39e19d03400232a8bfa2d3907ef1b2047c75d49dfc92dd6a5e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEC33500549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6382c3d74d9b63b30885ca99113ad8dc69fec162e6a4eb02915bd31f3104b9ba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2104587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e7b74bd90808c131b23b49f4ee61dc02534d202ac4e67dde136e4a01547da6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US83Z2104589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bd323e5baec9d7f25f4ec24d517430e63bd149a1f0cdf8421d356517c9136c. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/US83Z2104590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc15497a7f9daf282fd1cb791490a7f569855e85f4445a119f1640b52f57ab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITH642015682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6382d2944e52b119b58d3f8c5f2fea609d625fdc9707f5d19b120edb5a8671ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2086999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e59eb7d81e5b1d5e26b4135700721907efad753950e8546ac84920f140c024. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITH642005105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ce134f94dc8432b08a28f7c9c4745c3eac15eea91a5ec73fb0f19c4e078222. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITH642005106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb549e2a6dda5253ffcdfd3e05eaa9bc650ba8cfd763708818b72ca19da211595. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITH641933319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96730694b84955b2afb6e79074f5c7ea782827a7e4eea283b08f19e0500eaf3. 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/ITH641933320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda068a2be402f435434ab0e139b257373fd2d36f532070a746f9acd903b18c76. 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/ITH641933321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c8d7f0965030a1bf4e1758909fb6e4b5c855ab904708f0399dce9dc56e7efe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2000436.