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 0xa127971a08f0337688d239eab2d4217f1db6f985836983d446d191c361b43166. 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/a31d0196-c07a-4e49-874c-77af6c5883dd.json and https://artists.proofprofile.net/proofs/artist/a31d0196-c07a-4e49-874c-77af6c5883dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musica Mexicana Con Guitarra (Musica Instrumental)
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 0x9a1385fa54abc94426e929bdb9b9decd0e9902a8adfd84f1e40f7ce6f28d0a0a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/MXF470501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aca1edc91394fcba589fbe5ec19ee43c5ce6e9d3348d6f49b551e7d1712ff7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/MXF470501309.
Musica Mexicana Con Piano (Musica Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a09ea921c2173bdbfa8df2d56b75023e81aba75b72e6596662eeba8614e8926. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/MXF470501266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4871603678ff95aaf0433af82ba9ee39e8a16cb4cddf25c49f4d5b0425fead13. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/MXF470501267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c9b15c537bd4b38d56ec909f3fdc2760d6a6a6dcf6611f417d001929fc7f70. 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/MXF470501268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98ea6660cecc868ccdc14b9ca39972a77b768c5a92db2b52c4af3973316cf06. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/MXF470501271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703cc0a93fde26dcec70f8ee30b9252c6d127c88de075f2593e198bdae5f2078. 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/MXF470501272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b18f8dd8f52736416e968f0689dfeae764d257c977ee902098cbe90909710d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/MXF470501273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc118edc29936f57413add760895c4a8db10b86614783464182c061bff51e8f2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/MXF470501274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342dbbaecb7d3556f77940adfb0d966eec6f6e7068cf7267ef961622d0f36e3b. 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/MXF470501275.
Lo Mejor En Sax Con Los Exitos De Kenny G (Musica Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea807b5a005bf50f727d2a4458425bcf91fc712e99ced7c2cfbb86f5ca4c830c. 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/MXF470501152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b9b8d4c1ae239512b33b0c8355d5226fa059fdd5f238cdc03f84a4d16727ab. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/MXF470501157.
Música Mexicana Con Piano (Música Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0f12e17461f3f4eee84d58ba73bb4592b4dc22318fe83777dfb1f3ec11afe9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MXF470501264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac07eb205567c9fc11b497b86517252e9f5d39105f7fc25fd14a8fab7b46f21d. 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/MXF470501265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a09ea921c2173bdbfa8df2d56b75023e81aba75b72e6596662eeba8614e8926. 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/MXF470501266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4871603678ff95aaf0433af82ba9ee39e8a16cb4cddf25c49f4d5b0425fead13. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/MXF470501267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c9b15c537bd4b38d56ec909f3fdc2760d6a6a6dcf6611f417d001929fc7f70. 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/MXF470501268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9c5e49366bceb22525b8ae8294e821a58453bdb3a9d811287add8fcdb73886. 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/MXF470501269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3764e52f8f2f3204afc19bdda6703ea2ce54e97a847c73e0dd82ea34c064a. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/MXF470501270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98ea6660cecc868ccdc14b9ca39972a77b768c5a92db2b52c4af3973316cf06. 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/MXF470501271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703cc0a93fde26dcec70f8ee30b9252c6d127c88de075f2593e198bdae5f2078. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/MXF470501272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b18f8dd8f52736416e968f0689dfeae764d257c977ee902098cbe90909710d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/MXF470501273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc118edc29936f57413add760895c4a8db10b86614783464182c061bff51e8f2. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/MXF470501274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342dbbaecb7d3556f77940adfb0d966eec6f6e7068cf7267ef961622d0f36e3b. 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/MXF470501275.
Lo Mejor De Los Exitos De Kenny G (Música Instrumental)