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 0x99b97e686b20a27914c55cab5144af50732c38abe0964e6a66ad030d942e2af1. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97c86f56-8079-40b6-b5d9-65f366d35699.json and https://artists.proofprofile.net/proofs/artist/97c86f56-8079-40b6-b5d9-65f366d35699.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 0xa286af00f41711b505a7d41c361f57f2a31c48a95efbb20be3aebe19aa90a41e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZPLR2325660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f349db2b551fe8e5d689d2afa367b83535e4b622756353ea6b0b7e878a9484. 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/QZTAT2247296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d72baddd1ffe3ef7e2cbc4c2f5a0401ee71c17656f5e682343f636c4bcc118. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAT2247297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac928ffbb921ff208e3498515c01efdc1902a7a5ec8266136a795c5e8806db4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAT2247299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5a65b68db431b426cab7be25e2bfbb04e1258dd2425fb886fb72f42ca6663b. 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/QZNWV2271798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1c4869e784b4ab67be5814a4ead7c078c8696e8c0e13acdb5e968fc318d3a7. 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/QZNWV2271799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c71d22c2df3b37f4f804a9ea1d41dc9e567ee6a72ad5ab01661e8f06cb6f93d. 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/QZNWV2271803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c505c6b1f4e948dfdd1aae187be7d589e6cc9fcf6b20bd75c0a84d2108dc26. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWV2271806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41b8840cbda3d8825d92b492e1223cceebe9a4d797b08b818ed78dc3d08bcf4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZNWV2271801.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc623e83de8db121c834fb554ab1228d81f1d61da6a4a7f77d8e2f46f793b10b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZNWV2271807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7581ec9f8627494707c2f5ebcbfcdfdf3d6cc2e90d81cb39079664d96db73bdc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNB2290227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48291b43b8c09ab9234f2d22ca6ac0d4f1f3bf487c7ea4de7eb91a7d147f6451. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNB2290234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe254453cd9e75a5f853319cc5514cce35022f2a199a806c3ac3bfa3e6bdad556. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZHNB2290228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8d7fa8e92b42959bdb55a986f1539207c5b623c73e4b6a149bcfa97f262d18. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHNB2290236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dd923bec73fb4867140a8aed2a1205c6aaaff5d84ba08635d5f6efbf5ffe14. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ72225910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0d223dcad786d5935347516ea9108ace22c969290e326e541ad3fd790ccb00. 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/QZFZ72225912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d379ad027fb627c8a378931e2241ef089333cdb3eee111ffc0a052a1c38aab. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZFZ72225916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7fe5a893e2020759fb69af4d6f76b3148b0dad153497d1a9b2670adb885ee. 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/QZES71867795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c8a3c3895289cc9208eeb03030b3f7659e4d1b50ce69c85a1c76c146866b3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:36:50Z), 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/QZES71867798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24297548fae40cc28bbd9060dc077e3ce793d5eb45dcd3663efae16db88ad53c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZES71867791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1935296820afc82ec299812781d1da3e27ca18cf27d3e2c04a43d314d4724e5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZES71867792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754a6ee1f52dd18a585c003956c125b6ff864780bef5c310ebd9a55817206a65. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZES71867796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1de7cc719c9d72837bdebc17514630569ac3eece45d337055699da5311b7350. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZES71867797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7209622bebccc58e1a07d664f5dd5f413497e52d1f452ed7664184663359b7f. 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/QZHN92466010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2409c4f21a0b45700f7d25237043ce2538cf3669ca0c673a9470efbea9d121. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN72468993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6335e0c00649a430232a4db4719952b4bc624ae574a8c9bab7aff816e05ee6ce. 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/QZWFL2337084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e555810c1a1a2eec44ec3daf341e65bdb60547e2a0d9cf5fa46fd42b1e83be. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFG2315677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24fff6ce8684ab6c71f3a18a18e7676c4115c6c42377abfa06faab2f3d10959. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWFE2335273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98e2eb975f40d607479fa6efdd48d3e88ae591837b308ec61448e6dc8b3c3e0. 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/QZFZ72360264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a0394e833f626459464718cd35bd0b32a3a21677d7174a6c57c12f00ef7cfe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ72360265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8c357d3d16da422ab712cac5a2313e57329119ce0dabac6d9427319f966b43. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZFZ72360266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037dd316ffd47e4fbedc1ae5b371901daa9f51840ebf88a2e92cfd51c35f7a7b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZFZ72360267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3a0e08f71afa653e191396406970ed1ecdb60ecdb23692134eec87e0a19f81. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWR2297050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84fccff69d2c7c3aebb685ceb2f26c8fc0bcdaad1d46f4214afc54824eca4cc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:29:47Z), 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/QZSYP2165336.
Marcale Compa Perusi En VIvo (2016) [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd12972a450832598a9773c84b0dde2120fcd4fe4a616000532667aba4f289d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6M2169175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb9a47b5eb18c9307814305a9231ff389af9977953b64d1d32a1329c325e003. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZK6M2169174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c81eeaa564286c225ea6060f386e735766f3852bb9436b3ff14272ae8f35b56. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZK6M2169176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b608704363f29358e7299f7555895b169e0530a1b40fdaa05a774c83dd93493. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES81987997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6ba4f5778b4eaec8ae210e67cd3946238284044cf8188480fb1e2057b92989. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES81987998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bd8c5ff37c2595ea07c90edaaeeafda8ffefe98a0f95aba4c2f176692c4539. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES81876049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a4c91171d11d52a3d97fb3175b9c355d0e44feb709734541d33d8db04300e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZ7K2416681.