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 0xcf28a5da0fb10d5959c99f6aae5ddb76f62dbd3c5cefa908ee8f4ab2e5b60198. 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/0c641034-22a5-4258-b35c-5b6b494b5037.json and https://artists.proofprofile.net/proofs/artist/0c641034-22a5-4258-b35c-5b6b494b5037.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 0xabaa5a7307e562a792fcd9b3caca7286b686dcf420a1917411718dda2c59024d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QMDA61877495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86edf02d5df145226c1863055fbeff1c92dd9f1d7ee869ab282d41278f12a171. 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/QMDA61877496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff15d02303e020ae09e4c3bbb8ab0f180f73ce58b55ea0fb345314ec368e710. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:29Z), 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/QMDA61877499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5036b626590b4633b8b8dc4d538b49ab7b3b22e5a99e84827f319abf3f3510a1. 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/QMDA61877501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b2d3d80a4cc21993b47e377cabad7a0d2f0e5c0b2a82afd08c3c7e5427e7a3. 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/TCACI1587805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad7e68e7705a471838efdfbb1d2e39cde9a4fb0748905e8b7cef479d5e46033. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCACI1587807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e991a53a7926f706a88a1a1fdd74d03211b794dbbbb6cdac64aba2605330e6. 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/TCACI1587809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf30d32ca2d7a4dcd02b952ef2afd4373e999ac16ebfb4c2a8aa34e35801ed82. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCACI1587811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc22bcb8605c26a0b6df41827915d1383e405a379fa60a4f3c9c6c85c452a2f7. 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/COC011305204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeba9adaf02f7f7f93f396c741c90c3d0004689eef339f05fad139f1ec3987b4. 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/COC011305206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b7a8aa9d92bb582f3d03f93830832f0f11f3f40610bc70529b115b10f6aa8e. 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/COC011305207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3035df6800b8460210b4937ef25a262b0c9f03c48c1e07aa32d50f5d386f307. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/COC011305208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d46762c061b411d89b19e4c6dd78409fd3346bf7b11d3059c2d314a1a66dbca. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/COC011305209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49db298684ff585cc089f9869ea601dbf79df6b4a6ad8375cd51b121fea62dd8. 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/COC011305210.
Moncho Rivera 1 live at Sesiones Desde La Loma
Moncho Rivera 2 live at Sesiones Desde La Loma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2db0e9c6a9440180149e31772afe1bf236ba6daadb22a8ceb66770da8a9aeea. 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/QZK6J2305903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621e594f017fa956cdd391e6ad94ee673f060fa461649895d693c334631bb321. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZK6J2305905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787b049d84323c8d42cdc958bc37cccac36383dbeeb3d65bb2a48d395fd99f27. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN72593206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9b042f0e5e338817e823d80c17d3168c3a664c311862addad238ebd46e7e84. 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/USSD10504322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097df2dcba1579712302a95c739c21f690bba37e0648eabea7c09faa2d083d5f. 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/QZDQH2271002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7502d1aba1d0b06cfeefd69894fc98e7532476cc4b35b2d16bb99c983bf728b. 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/USMQY0813503.
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