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 0xef94116b7cf1602fbdcfc1b893a0f1b77d1d17ff40e05f88c712fdd8b26ac907. 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/2e33791a-1ab3-408f-931b-600020b29df5.json and https://artists.proofprofile.net/proofs/artist/2e33791a-1ab3-408f-931b-600020b29df5.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 0xa85ef1493ebd556af768a3618006f9af8497a9fda0f747acd0b3dc27b397fd74. 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/TCACK1590822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29df1fd30751ec8d5798eceb1d12ec6d905fb74f4d5abfc1117f9b9826e9ff2. 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/TCACK1590833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1fc0819af00e7cce3d41edff674396a04147530d4a51fe81b2dc96a1126d5d. 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/TCACK1590847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc9213ffab91626f1fdcddfa0fd09c418f44c62873bed45c9c37835ad7761a1. 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/TCACK1590851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd12cf7988d8dadc501b39325eab0a4e3a7506479b7c3f4e18e7429f0f475a. 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/TCACK1590853.
Amor Suicida (Cover) [feat. Los Kung Fu Monkeys]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f24c857c1f9ab19ac9f319e7e58c50d94707c845d04be062cea08a5fd48e72. 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/TCACK1590859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e637baab2e3bf71fa69db8b48916b02e91e15cf755f1bfa60f9b7ebb606268. 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/TCACK1590860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189fd30a704c16c067d222e65f3203722e3f4f23d1b59bbaf6c1cb6a57c6a95c. 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/TCACK1590862.
La Tercera Es la Vencida (feat. Uprising Ad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2916d58fbda8ee9488c41ff7a9d42bb619d2f11eb08bfbcdaa305b7c59c9b059. 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/TCACK1590867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd49a487f07a177f8cba9b54a5d448625449ba0e90be590563a6f8243659a0fa. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCACK1590826.
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 0xc81e778739b82cfc6716cc27a38478924311d8fb2e0cc7be90aefb7b6b0ade5d. 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/TCACK1590829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae36ea04e5dcadd6e01efea85706530c843c9a41a362cef59a4b63db4ca176c7. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/TCACK1590837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd643f7a9c67750ca07a0cc9bf87747fcbc65061728f8beb8ca7a4da414e8712b. 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/TCACK1590842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e08123bb169fc8e319e56a6c00701aee2801f8a45bfa09972e9bf2846d1d4d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCACK1590870.