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 0xe9a6801f535475c48053fdb72d049618d9f71a28e6ae6b136ec939ae384be738. 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/2e219440-b929-4166-ac0f-f411cd43abc7.json and https://artists.proofprofile.net/proofs/artist/2e219440-b929-4166-ac0f-f411cd43abc7.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 0x4bf5d3c49295a6b119701d3ce37e8c3b588b250c016e9a04f99401215c243443. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:34:38Z), 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/MXF010101405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eef96ee23e3829816426335c35ceb14831a5285568cfa60e8227e24c3b1edb. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:00Z), 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/MXF015900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9defa4479f2ce60128c6847eab375a8e8441ddbb27973ef82f5fa6720248f3a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:03Z), 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/QM7281544760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2749ae486e3fd7b9fd249d9ed8d67d3623418e207b32c94c5fd6f066f4af15c5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/MXF010101391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb170f7a0b056d6a58c980e1a3d3cde8b8fd496d3f126044f2e12decd1c1dd5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXF015900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235df985bf371cdf5d9f393dde6a0b34ff49a7dd894226d566794d198ee2a2c4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MXF010101404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0022d463fb771eea889727d9ef3afefa18300d3781201c3143da4b71c4d2b513. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/MXD941802873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42f2a056a5dc5cef6c88d117556646e588acb8585297cf2afd005bba80d9c9e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXF018601825.
15 Tropicalísimas Con Tony Camargo (Versiones Originales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b9c344f612145ec5203a31731cd54ecade56fa50964d8157a7aaef14405c9a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MXF019601956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdef40d3b3abb37a3a5a2699bb2e9db8982107b5cea6da5d7a1432b32de64ce. 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/GBLPF0275255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b8f1fc5e8ec0f8245682dfe56b776558cf3dd4f8bb8d23f8dcc3866c4f829. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF015900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b8f1fc5e8ec0f8245682dfe56b776558cf3dd4f8bb8d23f8dcc3866c4f829. 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/MXF015900012.
Las 100 Grandes Que Debes Bailar Antes del Fin del Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b8f1fc5e8ec0f8245682dfe56b776558cf3dd4f8bb8d23f8dcc3866c4f829. 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/MXF015900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf56035a942e35b9125787dc00e1d1e6b33f352bf88661b8e5af14ee31edf040. 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/MXF019601931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b8f1fc5e8ec0f8245682dfe56b776558cf3dd4f8bb8d23f8dcc3866c4f829. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/MXF015900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eccbb5b95fb3affe6d0ee5a00b0092185e40d5636bc8bcac40a10cd513354b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLPF0275258.
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
Tesoros de Colección - Las Estrellas de la Hora Azul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c42bceb66756b69c8e4e30c922d6e7d0c2cb08ef1287d12a7955a2c68c263c1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/MXF019600680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc0b4ffedc1a1940d3bec4ab2754076e9194d63bf5fec6bb4157d819b30a621. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US6R21329174.