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 0xa9d03bfc199aa67736914ccbae1607888455df479744bd838a13307c762fe241. 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/f00ea94f-400a-40aa-9c49-68f433ea04a2.json and https://artists.proofprofile.net/proofs/artist/f00ea94f-400a-40aa-9c49-68f433ea04a2.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 0xc1d311718a58a5dec42f036ade24c29b4d7fcbc3300b2826fac9eb9080987103. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/ES8401300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0921df1978f7d1e95954b3cca6af76244a1cea6c01b3f1130ddbe6dcae0b5e90. 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/COAGK2400003.
Más Que Amigos (feat. Buay Press, Robbie Vida, Luis Eduardo Acústico, El Vega & Dj Zaa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e45d732b1c85489f14934b412ca84d849534d139d9996bbcf4ec766f56c01. 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/QZDYA1800285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aae45929ee0b7fe30ace37d9ef0f05fdd7835487394f0218a4458948c9a6fb. 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/COUM71700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042a68429de65b94447272353c1f76b18ee35563a7630ef1e93d8a6ab8c8127. 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/QZMZ92162252.
Versatilidad & Vivencias (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aae45929ee0b7fe30ace37d9ef0f05fdd7835487394f0218a4458948c9a6fb. 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/COUM71700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3775bafe2125d9e671fcf1acc3dd3596471b970f2c9542f9aafb46f31cf43a3. 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/COUM71700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc638ddfa627809e91328f509c1795065cb5b1a1fb4305bc937f6c7bf53497be9. 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/COUM71700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f67b93d42b1ef1672796052d809a5143e59484bb883779b5ae02a5d05f0f9d. 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/FR96X1641330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237367150f4803a9eb04937cfa0bbc5a6c68bd22d3ec94920c3c8ca7a3d1f67f. 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/FR96X1641334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2845c4fe22df7172a99ccc4d56be2ee2d694b1a70c4315bc79e8102748b479af. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FR96X1641335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b343d69698655a726829cab270755c99f46d32484987be1a4ae16d6e68b27d7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/COAKK2000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768d21501a0d17d9455946fe372ae72a732ff9c8205fb0c9538ff13573132fd3. 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/COAKK2000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9143d57f1612dd7e1dee097046525b02825daf617302216a63e2fa754242e. 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/COAKK2000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535d992a54970e2df5f4cf57fed52453d4b36ed88abea55b1b5d6979a0f7e8f6. 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/COAKK2000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd79dd3e04557128c666606882ba65ce82819b88fc9f0d7361306f27a32f08e0. 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/COAKK2000073.