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 0xe2fad37d7036820533e33363329faad9aa66a2e787003ebc1676b7bf025f2c48. 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/6fe841cf-b723-4457-b854-b644f035ae13.json and https://artists.proofprofile.net/proofs/artist/6fe841cf-b723-4457-b854-b644f035ae13.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 0xba9f1e7f353a15b59688b22e26997773120c32bc1349e2a689afba448f4fb63c. 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/UYM120500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6225520edb4c3a240de119a1032f295b9c58b8d7082fd2f987700b17a18d8721. 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/UYM120500077.
Fría Como el Viento / Sobredosis / Odiándote y Deseándote / Tu Quieres Más / Mira Mis Ojos / Intensamente / Niña Mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ce99ba9597f472760c0f0b542cd01bd77c3e8300ae08e7e94e456dd0d73734. 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/UYM120500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a56fce9ba9f23b9d07bf5929461440c2b4e4a84d64dba5627f418e68a443eb2. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/UYM120700793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b876920f5f50908126a8e639eaa7800d73cae117aeb32d76ad455edc34c7955. 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/UYM120700799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd278c20fc52148d3d1eb42e68535c3f160e8ab474ddf36cc4e447dc62000c06e. 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/UYM121302327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a66ceae78dbae82a553e771ffa9cfe00b6c8213a766b26532e5f7457c1584f4. 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/UYM121302329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8700d5df5fec1d33d78e32da78a0fb41d215c8c0271e06a3e8fb499d403c6ecf. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UYM121302332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf122ee9cd02c3ea2a603c76d2aab84e95700ab1d15d48eb83bc9b130165a7e1e. 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/UYM121302333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff327e8dd9549282f2fc63f73c9ea3c680498e9c2f68fa77b5ef104fd5bb3bd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UYM121302334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6489364151f7389458ad1f7104dd0982a8ea390393d20288422cd7742c3074c8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/UYM121302335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5c7c261f68387e402189e8784bc59dd77b51d2a2dd621717a7a7bc2918d41d. 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/UYM121302337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a2ff87001bb789c49931aae4815724ff808d08bf69da106ba0218aaefd82e5. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/UYM121302338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f50528d7b7c936c26967b56d3ba734148016aaea7fff6462cbb85c5b5aae32. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/UYM121302339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaf9518b754ddd4045f17c023f84a219cb91ffb479e865aac6f5de8c7a82af3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UYM121302345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3600f26bc2adc51cbeacf66c4e41b65e98d8570f05966686eb4f4a1eb65c900. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/UYM121902828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe121bc5fdb23150906d47b0f16125a5f6f51bd4828a04ffc0244783c912f3758. 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/UYM121903723.
Polvo de Estrellas (Montevideo Music Sessions)
Cuando Alguien Me Nombre (Montevideo Music Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6066515456ea42bba28062b06c13de85b8a84b87de852cdbacbac441b653d850. 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/UYM122003240.
Suele Suceder (Montevideo Music Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca63da42e7c1411483dd2cf48c750e02a2f6141f8f370ae970839dacf8c92730. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/UYM123000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57391b72f5ee644f005e3ffbf49c997e6a0056060fa8638ae762c74821188c7d. 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/UYM122400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaff8e199ac1bed63af1018b10826758c4473b738b402e962b28ff38de6d39d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/UYM122500474.
Los Abrazos son Instantes Decisivos Vol. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3854451c023731760d2cc26e2eeb752adca298f923618072174d494693b42d49. 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/UYP462300012.
Aire Fm 100.3 Grandes Exitos 2008 - 2009
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00365014492b9dcff1a5aefb8ac92458a26e1b3041552f1e0d6f1d0aff2c227. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UYM120900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156dc14b08a2a89ec89e4548093004c955cff5fb50439b8d2034390521eb549. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UYM121902640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed1a72dccc812fb4d9e62f7585a89c04b0ad061acc3ba7a9d593cdc08dad3bb. 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/UYM121001551.
Los Abrazos son Instantes Decisivos Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857a7d8c471061e4289b76364e68a5622c80c2eb983061b6fc922cd6cb591f57. 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/UYP462300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d1d23a3ccf92e8c17b73e024ef0bdd224bbcf9b5d9a0d32d218a5af7a5f45b. 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/UYM121705894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d705ada37c5fc915a66667f5e89e81e08b3cb2f637900351f99b6aecbdcd4f5. 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/QMDA71539466.