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 0x99215d25e9e9e97dfe0e5a2ab3dfd6ed7b386b37429f3e8feec7de5f94a7b2fc. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ca9495d-604f-4eda-ad30-d83c5861876c.json and https://artists.proofprofile.net/proofs/artist/9ca9495d-604f-4eda-ad30-d83c5861876c.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 0x083aae3e6935759e7aeaf29c56842f3a9932c8ecebe87d5fb80d8aace584ef8c. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:00Z), 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/UYM120400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c2e1f2e35629b9643f49125f9b32025a178c7fa4348868f3968bfe16c426ad. 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/UYM120400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181df9ea36b2864b80784767a54857ce16986b63b66c3defe89028c12b25ebf8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UYM120400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77f9ab6053c22bf311c8ae652e9c35c3458f9d4d63884c6b0e7f66233457274. 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/UYM120800532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfa01fd214a37c4015a30eba179f6fb14f6abc88e47236aaed735a7ce1fc966. 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/UYM121103526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d8dc923af3ea43f8c9a80b90121325ba30bc2cc1fbf5237c1f1592f78529a6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/UYM122500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47c8e451024d7b05b7c44fef4bd132c6cb7e032bd04fc6b9aa1b92c2885f896. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UYM122500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9285bb21789a5571f852ed266b326e2a970c08f8469c778db73be86895bd35. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:57:27Z), 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/UYM122500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83f2f327dddd8a99a7324776ad6a37b75f33d145ba1c33a0d7f2affa03dfceb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:13Z), 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/UYM122500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65316afa1ed72dccb76d96f9535dcb706355e08f7f4f05d9e59bacc0cb9b9a2f. 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/UYM121201958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f519d57cb87b710cc05cbb2e8a01962e40ae467ebdaa0291a4e5303e6633a9. 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/UYM121201967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffc6a1fed6421962516f5b151f2df253fca5b7c24a86630f2dfb5ce98b9ad64. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UYB141602804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6d48d26c5a108cf2d4e07ee0361c3b0d4b825437f391775f21339067e1446a. 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/UYM120700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582d2d3a83666a2e8686caeb7a7bc24d3c62d7b8132ea2f7d78638330edd6491. 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/UYB142016401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900da90b288d72ec85af779075c9503808252e2f9e5490cbd4172cd84123a699. 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/UYB142016410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd74e0a9d2dabf9c2a5c781bb564190058d292860b4aab4bfe743349b0dc5ef. 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/UYM121901002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e03d2e8d713e246b3db6b2bfd8885a3681e5c26bc824d5fdb8075596e9bd88. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/UYM121201942.
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
Curtidores de Hongos (Presentación) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146caf92796b23ed446a57a979dbdbfb1a934d93a8addbe2d2a57ca8523d72e7. 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/UYM121500227.
Presentación 1993 - Curtidores de Hongos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382065f161b22a8368a159ddced96d2259b32f68a32c1f30a751e8d53abb8d0d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/UYB142016404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5518c6fec46533c66c84499da820e7b1ec57dcf72c6dd96fb92bb7009e20ba8f. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/UYM121800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89b05c40ecacf674310b77f6b65459118841913f34c3b000fa1b825e041a2fc. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/UYM121800106.