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 0x2d02589492e3bfcf8a8c72cc10d49d22e8c76fcac6d11f1338db39c5ae114506. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49d93d2a-30d7-48f7-95f7-097f4cd9def0.json and https://artists.proofprofile.net/proofs/artist/49d93d2a-30d7-48f7-95f7-097f4cd9def0.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 0x02b0f295972b1ed821556d3ec366382199002af3ec4cba50eb8605d49597acf3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNC2192357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742b3d852b7ecd79eea3afdd65a239fdede09631bc85a0f472fe9a33b8ac9cca. 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/QZHNC2192358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeada057b8729c2b08405d8c51479529195074fdf1d4b211fa8d305b94a9602ba. 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/QZHNC2192359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f1b4943d4dbebb74e8b197737985adef1c218c4f260f329269ad8aa8dd38e5. 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/QZHNC2192364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf228cdb104f8d4af3a5e9e1b3d124637324df2c059f5d26324ea8065f3fd90c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZHNC2192356.
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 0x9d7d64e58db3b713771a970da1f3a83508f4537c22e0187260d63641c9b1d1a1. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZHNC2192361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab82ca2a64409cb1d25a0f2d79022053c8c06ee0a127848d4a4f61f20583d69. 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/QZHNC2192362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32ae0240ede020e2eecc0c2436bfcf5f79b6ba6d05dc3915bafa4b2af784031. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZHNC2192363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b591952110ba4487bf266b85792369acc646d67464e2f2bc09f684dfe032c8e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM7282405392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6495600e15ad468f02a9f9a3a07fcb584ac7f5183fa4e871a5bab22b6e60cd. 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/QZMZ92080232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700f10e6dc2e69c43ed6402332926614ffbe15176d6786fab759281805b3bd9e. 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/QZW9L2320564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25119f3b145bbd3947b93e6aeda153d9c37f9ccd13ee8634fe46fc912840a8cb. 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/QZNJV2216138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6512151e7d9f14bf8ffa97024116ae77df0c1a08728411e072f2f58108cc39f. 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/QZNJV2216140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6d0a72dfa24368e9940e20cd0f4c81ffa09bc6f430b5222286ac5e2e022ebe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2216141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe28fd9e95aa768999a22498510784ad97f965550e5da06ff20639c749750d19. 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/QZNJV2216142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d81a0016747525e2a1612c9b09f7801ac0ae1f612e54d1f9cd366ea2fe5066d. 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/QZHZ62112466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36a1d4bad5d6f4a5865606cebd8b92478c69a5f433d00405959b81c1bfd2c68. 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/QZNJV2216143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b6946c8565e934703a7d491c173f221887ebc88380051a71742619602adfa3. 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/QZHZ62112468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bb4e4a01580d3aec2cc8094575878dfe439e9c39f3dca57cc8b623438c4ad3. 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/QZHZ62112469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a75f6bb516cfe092a1aaf7bb6e98168079068d9577de77923f22c697922afc. 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/QZHZ62112470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adb0b5a723b1afd25656d19abc8be6f41bbe9e40c85f118feb48c7b9f97de78. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHZ62112471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11053e69b4df642750876a9a0bfb49ca387ed734aef8c875c0836f8a4a73dbb. 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/QZHZ62112472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dece5cc414dcc6172c0e159617320636af27fdeaeafcb04cc2a8214e27a0c9. 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/QZHZ62112473.
Mix Chelero 1 (El Triste/ El Solitario/ Entre el Amor y el Odio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2a335491de3038191d54a2d819668d7782e71fcbecc713b4f783f9aa66b5f. 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/QZTPX2255853.
Mix Tropical 2 (Que Puedo Hacer/ Veneno para Olvidar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555fd0db1382a0315074cb60d3264e61176eccb501fc2b8939ca803b3bca6f90. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTPX2255854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fd6fc46ee2a064d9a685aed102d3f132d9da64e47b4c8f5247792095872a17. 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/QZTPX2255855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab8eca83f2f72907fa1c8c06142cc49ae9a353ade1b94486b6b99251bc40a31. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZTPX2255845.
Mix Salsa (Vuela Muy Alto/ Y Ahora Quien/ Juliana/ Probablemente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2d59f721909c150298588c03f5d27f6eaa02943f61a07ccdbfc496f33c028. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZTPX2255851.
Mix Romantico 2 (A Llorar a Otra Parte/ Sueña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e6bef025f222142653fe8aeeba74df073770ecc7286ad7562a7407c2e9714d. 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/QZTPX2255852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7106e873579d7f9b9036de0beee036df20bf3286fed377adc17f18410006b41. 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/QM4TW2569771.