Ulises Hadjis is a Venezuelan singer-songwriter and multi-instrumentalist nominated to the Latin Grammy Awards of 2012 in the Best New Artist, Best Alternative Album and Best Rock Song categories. Apa
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 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 0x2a04c948733c6b3ce502ab4b9f898fbe27d9619d58b526fab66494bbc31062fd. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/064ecac3-0d6d-4cf0-8fc9-2e73cb5e1403.json and https://artists.proofprofile.net/proofs/artist/064ecac3-0d6d-4cf0-8fc9-2e73cb5e1403.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 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 0xa2f6d0a19f58a8c9f77228088abb8f8ee9223d2b6a49427863360d70a0af1d51. 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/QM8E51400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9230a5b0c22aec1b33bbea9b80c2e425c304b416901422c0a1efbf7c990de51. 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/QM8E51400569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61041ea6e5bce71ba6e4fda112944fa129fa7df3eed06867c025244a38c2f093. 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/QM8E51400547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552d1066bd252e4948df7e74f231d8a03ab190512d49092ec65da9703726c982. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM8E51400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee17b80a14f60748c68fc0e0d0b3d6ea8e64e263710beb3405f6209b62ae9c95. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCADQ1850350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc85ee007fd4cfd76a0671d45f81fd387bc390294755c6e64e1270c661ddfa0. 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/TCADQ1850351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22782bec4a28d84868738e194799c2ea6520a980175d7620ab83592a268d149a. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TCADQ1850354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55fe6006386fafe59602af2b635829cdd2c207db0397f7017060f4680e607b8. 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/TCADQ1850357.
Consecuencias Y Reclamos (feat. Esteman & Juan Pablo Vega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cf2df702598b7d54fa03fde932ad75babf9abe2572933b894ee92200ec3e9c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMVLK1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675c4bbf04f4803b19fdc30a9354811cebcdcb0262661935a7f7091c0f8d6be4. 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/QMVLK1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c58e2ecd93bee7d51b7492f361b442198d1837ac06b02062eeea1079354be7b. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/VEA081200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd487912307f1d623e81ac01fe0eb98f0237bf89714121166ef5a9a1fa365327. 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/VEA081200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8251b7ab88de4b0dd9350756e4205cf36265d334784112eb641a6a0a060d672. 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/VEA081200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bd4b47acee35e8a41bd52933c8418153c7a9fcac3c0cf43a9e017f11dfd934. 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/VEA080800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdca821583ac18bc1072c3c4abd1a59617fec4489d50a8eb86711bc42b2cbfb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/VEA080800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9e5e3f951b24ea9f19f070dae73e3bb79b55688cc419acb80798130f367f9a. 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/VEA080800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb52b9688417581696f12de99fd4f02f307b5c7da7a87fdd0ff09474676661c. 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/QM8E51400694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61041ea6e5bce71ba6e4fda112944fa129fa7df3eed06867c025244a38c2f093. 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/QM8E51400547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9fc9679e98aa34dac664086186ad82dfa19a69b2ca659207d9867e53edd7c7. 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/TCADM1815338.
Movimiento y Otros Relatos Sobre el Fin del Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf28e24e8d9edb8954c44c0f7c5322fe9496f5d99c1709a9e5b9a489b2c0ba6a. 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/QMVLK1600001.
Si No Te Vas Mañana (Llévatelo Todo) [feat. Samantha Dagnino]