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 0xa2d3ded5878e7197d4af768cffac20cfde74f944322edf1886f057714e3f7218. 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/812b0ec2-5c8b-4513-871f-accae369ece6.json and https://artists.proofprofile.net/proofs/artist/812b0ec2-5c8b-4513-871f-accae369ece6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bruto (DJ Conds Remix) [feat. El Micha, Divan & El Taiger]
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 0xbdcebe0543f3b4e7dccbaf718ccb8234209b99270bf2d77b78a43dab0e5db1c8. 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/USHM81624771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7d53a31cf90736dfdb5936222305579d50600e2321cdee7e543d937b122e97. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2097852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37a9c00cb40c5aa5fb982c53ac17c695890630bb4329fe63958956391b88f6c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2097853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730547c92570f812d62d8dfb0faf8cf26ffdcca5bb4f2838b840f5519b629a7a. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/TCAAU1172079.
Vivo Pa Morir (feat. Kendo Kaponi & Oneill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cf653b1f4827c80f54af148bb110db1c276ab6b3deddff82b8f9ba3e471217. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADK1741035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d1a90e38723727e8f31f98ecc7cd46f7684127879714d4f4e2add9d52ae48. 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/USASN1302282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a8d4cc12641b070cd88d2c7bcf736faed24038af08362bc77173bc683c159b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM81464505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc5d4351132aecb5c02e0786479eaad3fc789531d9636e673b3e58ac6c31b67. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8CY1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ebab460e2568bcb25820945b2499402fe49d61c2ec6edcb727f542ca36e09a. 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/QZ7R41951639.
Nobody Like You (English) [feat. Oneill]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218090359e908f4387e42a002ade36a5d509b2b88599f716a58bd769b0ad75ae. 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/USBKV1100316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b1d28c19e33727bd16c327d21f32b01fc7f2c2f4be9983f1840721eceb57a6. 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/USBKV1100307.
Nobody Like You (Spanish) [feat. Oneill]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139078ff8ea32c2e3ef7aa9eafe37daf0d5fa1264435663fba60fa79e761f45e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USBKV1100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e2cab752ab7bf3b607b5d0756e130f2d95fc757d99a2cd10c4bee0c06deb43. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/PRA010800513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22143173a69c1ddfa92e5f3c69735b3023a36761fd45c027e8fc049ba4c0f7f1. 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/QMFME1365299.