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 0xe64fb22e50c1108cb0d183d445fcae89f17be34a787ced1ac1cc0f5b3ec7404f. 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/9176b822-148c-4a50-a62d-019cb74e00be.json and https://artists.proofprofile.net/proofs/artist/9176b822-148c-4a50-a62d-019cb74e00be.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 0xf1b5d9b105fdba68471f0c431b8787185068e77b01ea90d98a5237ad6b8a7d79. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL4611400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1ac0e859a4d196ad11171a25adf5078895f4b1b9ff76d5ac0100fcf79fa11b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLHR21500277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d88b65f139459238b980e100097367332b1eb235bd7edde3673ed9acba97a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKACT1540077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2018cebc389b9a11bccee87e2e04665dc0caf40ddd8b479bad6b387414f22824. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKACT1640093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11df47533397defce1c77ead421d7dd4c76bce56d8e3b95abcae19472272204. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKACT1640094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33494f6793b02e9f7d1a02b99c0312f15d3fc210b30a98eca2471cd15c78f0b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z1767757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b6359d229afb8ef8096fb2a127e39d7d077c724bbb45ebc435c1461b464d92. 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/GBKQU1722764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c3cc98db266e5576b08cbb33bb9357ac4782dcb6d5f1d255092b9725fb64ad. 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/GBDRF1700747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6531974191fca8dce3f9b495924b61804bc67999d413a44c1f9c4e032032f67. 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/GBDRF1700748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc247c6c9ec36d780acefb4f12d3d54399bd5523c76fcc787daceebb777ad93. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSCL1768009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c270af7744b24663d5a8b771f2e62cc95a2c987d1f2de48a6741cbba94bb155. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:45Z), 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/UKACT1824740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf25dcc818422f29301d32dd71370716b7087cf517c1e0b29b4730fcb4452c77. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKACT1911265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd024840e610c4bc1bccea55c1849735d711c9a104abf3596c26438fb671a1804. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/UKACT1911266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6901ae3c75ccb04b415d67c83d38785b61761070a7243b78248fb12aff2217. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GB4PD0900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcdc8057bf886da55d45397f2ecd4fbb655978610b0b969401b20e69b30a4e3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GB4PD0900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a82d64d89e4ba9df5845b071753dc1fe74271e270d9fb88e0a12e41e5f6dcd. 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/IL4611900820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8524fbb59ff548d03d62797331d5515fb4c9cab1244d51ccda45bd0d4a823f2. 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/IL4611900830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c7c90676e23bf357baa38e3f1b06fc8128ede9fe2946db58935761c4276d46. 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/USLZJ1981414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af8dc9f2576add1e5e89ee37fa61765cfddaf775d57011a1723349cec3d19d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEBH21900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c007108ad377e239f6de969854cde1a007597857eb11316b34f6adffd230ebf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKACT2010642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9534981aa7b65ffd9d7fb3e8d5002d930d3f18c17ced161f6cccbe7bb5dec109. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKACT2010643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8d2a47305fec43b7a0865785f55845740390c9f77556f0e46ecd6863617b04. 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/AUXN22097521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad3e6e8dd2b3e2082df2138e8100eb8b116aef8ef19a47d6759610dbda5a64. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBKQU2125462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5805b2fb9a811061b355d1269c7fa739f61612b5ff266c916ad34fdd16963ea. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/UKACT2110095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1846a24444ff18def52b90fb980cdccdc2288210b1bd33a87a00dd153f1d5028. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKACT2110096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2263120fe477eb328cf26e9da10442a7a681205ae9dd77a6a025d3e4e3e487f1. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEBE72200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce7e4cd7ec51f049bb22c256066df10668b5c9b24c44c73155adc7a2382bdfe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:01:35Z), 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/QMDA62262586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16086d859bf46f97106456174c53817a5d6c9f0d319dfb8307330476e02118de. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEBH22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac969bde5f414211bf2da758e5854f894b211bd29224f8d6bbe664a48a71b24. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEPI82435503.
Balance presents Sunsetstrip (Unmixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43d12c875d1c059ca63dfc07cd84371f85448efbc282bcbc8d81f0dc235c38d. 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/AUXN21919085.
Loco Hermoso - Hernan Cattaneo & Mariano Mellino Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4fe4ab0974ce0b92fe4c49f834b72d7b73699155c9e4d7b148678d23f372ea. 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/GBSCL2034044.
Balance presents Sunsetstrip (Mixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a917135bd00d0a1f55ab80bca0a89d4a0da81f261ffcba41c2a56123ebf98fc. 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/AUXN21919051.
The Old Seawolf (Hernan Cattaneo, Graziano Raffa Remix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3383109420b400a4333aeb2855a8ebf439e8534b0294b5fdfa70fd43657e9f. 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/AUXN21919076.