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 0xf455008c2cd186ec9270ca986e79bda520b3e4bfb7dc702e84e6d2956778c772. 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/b86b3184-1a5f-4923-93e7-3906a47a3834.json and https://artists.proofprofile.net/proofs/artist/b86b3184-1a5f-4923-93e7-3906a47a3834.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 0x2b000afa72ae93687564f3f8649b4817506250f97aa96705e08c067a1c6b22e2. 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/COF015000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde5dfdc8c439394be55ff1eb301745d4fe36fb93c440aedd002eee7f45fbfb1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USR010612564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad3cdea18340e79311db410d282f75a755aebeae4d9cb5b7af11f2c8af730df. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USR010612571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7b3813e4fa1a9b9f353e6278df741dcca0709a4f51103a56391bf71abbcd68. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:36:24Z), 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/USR010612578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe553086fa35f7fa4723e8558707c5d43ef6ba92d97e5ad446cc33b76655ab75d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/COF019501623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8add26c6b0bcf0197ef873aef760fe25b0798429dda30624aa338519966059. 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/COF019601262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dde97cf084eba09fea18e00a8290430821e89c2ca6836a87881e3b3e63c7fa. 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/COF019501862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8200b7f910ff8c8390194686733084b18097d7b811e23195500c25364f1777c3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/COF019501863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17830b0fcf08ec445acb9f3257584585314d5c80dffffd80cb3cf69d3e06895c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:28Z), 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/COF019501864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d52d3ad3f267898fb01c76603ef6ea84a6d7de62556002673418a3edc738f3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COF019501866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925468558e6f424250e6a36c130b9f16e6084dc0eaba2e8167b7d28ae42f1d3c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/COF019501870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4bba7de75f1d52e6b1fb8bd74c1bfc1bf846bd37ce20a42c8a29e13c466f66. 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/COF019501868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36028ee471c6ef6e75c5bc764b30c27d65973e19b118f6aa82f5375957c854db. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/COF019600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac0ddfef42bed75b14af2fb5ccff3e5b8da13d4675a13593d971b05d7a7357. 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/COF019501874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f776713f28f019f60116eba242f29aaa6efbddf7468a298fb7defb715858955. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/COF019601265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445db4a61c5640f2a688e1cfd51d781e82a9b923911f7e11f7fbda12d6d6d235. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:15Z), 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/QMDA61328274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbb6d33ef177d20ad58e47258ba4b6f1cb8e5520d9bc2a68cb849f96e8b10f1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QMDA61328279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dac078394f846493c2a2cf1f97d08c258955d95ac959d429e8a0e8b35e4834. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:03:53Z), 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/QMDA61328282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fb087df4bbc14f90b1345f03207c6125c47cf8336654f963767d6c51b5b9e2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMDA61328283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670f480b706714ce90dbd8e547a7ca704217391f1190eb44d6317d0709dea006. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/COF019501036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c72e4ae9867163af827ffa1036516c183cbe64ec9673735e54f9e898041b4c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/COF019501049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4964d18e4e32d64469913dffd8f8d70539f7d6daf00f0aa0c1e1270c0b2c45b9. 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/COF019501621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07821bc789dc3b3bf1d78fb61a5f3a617ec9ffa3f6e6dea2feb336f260ffde7c. 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/COF019501035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b1e1801bd198e8678b1d08c49dca277c127b4722be78f574be401fa68496d3. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/COF019401045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72f585dfde838e56bed44a1693c20e6a3bf43c3b8aede8656c4d2b55fbd7c3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/COF019501041.
Colección Clásicos de la Música Vallenata - 60 Años de Exitos
Rescatando los Éxitos Originales del Long Play
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965b782a61eca05ecbabe9aaca37587de7a0588ddbadd66cdde638cfe847cad5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/COF010010681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c162836fd2a80314790bf11390db70897e38e0b7052f988b367d13dd7fd48a0. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/COF019005154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85be2946ce6810a57658bdd3f27ef4c17c49c3d823ec7d441e349e5eee004f21. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/COF019005155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9756d8daa9fa45a440e7e7d11de30a85140076280e70c655132ac1fddbf4ce1f. 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/COF019600270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf843340892d4aa2a85d5a1a36189744adf6ea433ec555476e53ec24f2a392fa9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/COF010011297.
Grandes Compositores: Alejo Duran el Primer Rey Vallenato. 100 Años de Joyas Musicales (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4964d18e4e32d64469913dffd8f8d70539f7d6daf00f0aa0c1e1270c0b2c45b9. 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/COF019501621.
Historia del Vallenato en el Siglo XX (Vol. 1)
Colección Clasicos de la Música Vallenata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a89e5127aafb4b6c682b617b0fa8d690fcbeac2f89ea12883b6e47a57f2c501. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA011941595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc131f65a129ae96a09f99bf214750c51073d47b7d1ad646e621d417cea5b75b4. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:03:24Z), 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/ESA011941603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc582b0ae31ca6db1adbb7863f567e17a2e84dbea026703e39a9ac8e82f3da741. 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/ESA011941609.
Alejo Duran Legendario - Miguel Duran - Dejenlo Lorar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e6b47fa8e21d64efa8dab53e61a64b4d907c0064b6e27f8ec9481970f4531a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:06:11Z), 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/COF019005149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e38fbff1338e62419b643319814ab2f87fd61f3ae0f12e52e31fa33eabd5a0. 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/COF019005655.
Cumbia. La musica afrocolombiana (A cura di Leonardo D'Amico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d84265cf1fb14084196f2e4c097660db8fb5e690ffb1e1007a8cad938aa8891. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/ITO510234807.
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