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 0x1c70aecb7f9a7300cc5455f198e25f48e0482742958335f52fb93208b8076e5e. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b193e86-5dc5-4aff-b154-29833b6d17a6.json and https://artists.proofprofile.net/proofs/artist/7b193e86-5dc5-4aff-b154-29833b6d17a6.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 0xf29ab38867dc93aada02e03f62662b1d9991af703c21e3b00d5086600f593578. 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/USCGJ1854260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c53f5f93cd77db08f8f1e724dbfd24c27acb1da93492a94f67c682265e76ce. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCGJ1854261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cac2d9781e1450be2faf4e02c8a9790924c8b24de5aec9708ccd7188bd3ea6d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USCGJ1854262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9599e532108c7746a6b3c7c844caa0b49cda896ae9ead93d763bcdc50a25cd23. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USCGJ1854263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7005777efba4ae0a3957066114dbd4aff168f52081d55edc34c94fc911f5fc73. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USCGJ1854264.
Tu Ojos Reflejan Amor (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccbe860a58775b69590e79a5c45bd41d1bc82a494c76d6fd1836f408de2b91b. 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/USCGJ1854265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167a975ace49e765e3965f556375ecdc3fb7f4a499d9633451bc5a13421a6d2f. 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/USCGJ1854266.
Digno Eres (Dios Tú Eres Grande) (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41943b1b239f128cb5659dcc2bb791cb4d2f4ed7d9579ca4dbf9bd2fbe1ec69. 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/USCGJ1854267.
Coronado Con Tu Gloria (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680cdf4092a2f5e823ee807b34b3f0ee33c45234327e7f80cfba80db68b93b64. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/USCGJ1854268.
Pon Mis Ojos en lo Eterno (Versión Estudio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368f2aaf2d1f015a6b53a101438c60c8ce89491da405438318ecc5423c76b7d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USCGJ1854269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf225b56eaae469520567e68d7c0902711bb9c9db22bba8e9f20141a5039c4ab6. 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/USHM91481445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0869b2b8ac41a5a0f14343d8b73ec95c5dd3fd9743926de31e1c03b1f1e6b9. 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/USHM91481446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb729c89bc86c3da0d8774bb121d318877474dfe4284c2d8c6645fec1468761ba. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USHM91481447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545cbe77339043eb596d9b38f46b5664162ca1cdb4531b26b9333c60ff30a779. 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/USHM91481448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe3d6fa73d04a9bafe4ee48ac75065170e29dc8fc102a2227a2952e3c4bd58c. 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/USHM91481449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5bc1a9c1f2b4c8915f1f00b18c8b7058e070e8dbfc3b4e2aabc2b5e0c2d0a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USHM91481451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466bd1c49e48aafec19f91e8cd6ab8201819430827d221eb6e94b5133e524b46. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USHM91481452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98172394bb5e64da01441d17e5db7d91e423443c3bc4a8026a3274fedd1c85. 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/USHM91481453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef27931f96c4c7d74d4f7c1cdd993d22af193d66af3b71697821efa46d6e71c. 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/USHM91481454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb7433088ed0a67d7841c709c2b601bc84f0075207c8ea912be4a9c35dca5ab. 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/USHM91481455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a2a1c365d9e1fbe109843c5e6c0b46225f8b9788772c2741b362ec91022b80. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USHM91481456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bf0cb345cd1f9a187305098f95f80a39d32fa4084d10a1d01e4aeb920fd4c0. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHM91481457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdd5a9323c5182aa43d0ab2156dad00bddb7a3b2d589a64eab72d02df03d939. 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/USX9P1404181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a04b2777a0a2a1f9bd79f2cde2b28c9329c9876a18b95e29970f6fb134e231e. 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/USX9P1404182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4995a46cde0697e9c201e07668e26085aee0d7a6cd8cbe73326e6c2c24e77c30. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USX9P1404183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f58a2f219fcb2afaba4719260df201f3e994fe7262ec2d8c3baca1a9ff09231. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USX9P1404184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e222e5e377344cfe7a3d956c2941c009914f634e077bad4a45ca806c6923b33. 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/USX9P1404185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374ed9f09bf5b84826141ce17ef369cd0184a20c2d1c60dbfccfe1d0842aefb2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USX9P1404186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf14d5db76cd2a911e8d5037815ec368084e5293956a89a153b55a2d7c27f690. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/USX9P1404187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5556e3ccc7579dc45ad4855355a8f2bc95b771c8418caf7b1ffad6f25e4411. 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/USX9P1404188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4bdef5d0f97553c02999df8e022e21f837d4f6b2aa4ccfd31863f43f2eb85d. 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/USX9P1404189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b910dcdd3c08b3eb0ba6d7dbea6074c7190ee0a8ab94e90a83c1cb8a80f3d2f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USX9P1404190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8416c369f843db14a925abe8b12e763ed331665144dd8f7d0ed9a2e84d55f424. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USX9P1404191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2741cc16ddb68ece35ad4c576312e0d023dc209ba93ecb8590d80af2f7966cd0. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USX9P1404192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d01d0974f776b5d575777019457d4236f76ec7c9c671f186e9b97ecb4a9eb95. 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/USX9P1404193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0afed4917fa78db9bdbac269fdbd2d440ed184b7ab6f42180a9dcb6eebb840. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USX9P1404194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dde2896c79cf039533967bb945091ff177b8a5913ebc53cf755d4e73c17837. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USX9P1404195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0329527ea6cc8683c09bca473bf5ee045dd5679df48b9c49f4ad8ba1513fe8. 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/QZES82159486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d80852b927d9b85123513d97009e43e08d4ef0d7c3555c157a4d62b77a0b52e. 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/QZMEQ2063688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75355bbd54300419a7ad7ecb310f24d4142277c5ac4e0fb86196ad81e244870a. 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/QZFZ72150912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc956cdf94be89ba6f92fa28e3747848962d25a51eba0a4aaa468186eccb48c. 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/QZES72386340.