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 0x08f9e8e4669414e30a844a4a6fd70de12e2d651ef386420bcf5a4d9bd46c3fd8. 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/893db23d-be5a-4911-92b9-1a2c640fbead.json and https://artists.proofprofile.net/proofs/artist/893db23d-be5a-4911-92b9-1a2c640fbead.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 0x60a31166e46b492121da75b67231ec21e4d86429196c424f026b7d18e11c86f5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ5AB1731298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897282905164f3d903c5855425fdf650be4df9e47f6420e781e8d4302055ead4. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZ5AB1731304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c0fedc7f05b19ac6441ca9a4ec778eac3f732ae0770b6ea8e29d538a54bed0. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZ5AB1731305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8678a8e5ea5d0fcba5d16c76e137dd0d828d23b3f4382ea9a7000eb9205dd19c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZ5AB1731307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376eb0d918eb90c73b0ae525d526aa344deec6c970f64a7c891bb5e8d170787. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/ESA012048213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cd258d7af731309c566855e4575c9b59a8336c9a5a8e4207007f1c2230525b. 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/ESA012048190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec6092ca73b8b222adc459694c2e0d93a24dee9e45d23c0a784d35aafeafed1. 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/ESA012048193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf066de4d56c174e60897a6f35bdad7a03a9eab3d5ee21e556dfaf2c14b6602d0. 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/ESA012048194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cd258d7af731309c566855e4575c9b59a8336c9a5a8e4207007f1c2230525b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ESA012048190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec6092ca73b8b222adc459694c2e0d93a24dee9e45d23c0a784d35aafeafed1. 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/ESA012048193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf066de4d56c174e60897a6f35bdad7a03a9eab3d5ee21e556dfaf2c14b6602d0. 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/ESA012048194.
Mosaico las Jilguerillas: Busca Otro Amor / Llorare Tu Ausencia / Madre Abandonadaa
Mosaico las Jilguerillas: Busca Otro Amor / Llorare Tu Ausencia / Madre Abandonada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c02cc17a027a48e8b0d98dfcd401cd83fcc104e2347d50455f53c09a5941cfc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ESA011839913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c02cc17a027a48e8b0d98dfcd401cd83fcc104e2347d50455f53c09a5941cfc. 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/ESA011839913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376eb0d918eb90c73b0ae525d526aa344deec6c970f64a7c891bb5e8d170787. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ESA012048213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56553faca1364b1d77cc69a3b112ef6463276db887261befd473124d05798cba. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ESA012080570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680ec7072e78b13414a817dac32a9d482c3f9f621f6ccc076299c9f3ecba078a. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/NL8RL2316935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c7817fa182c42f5f41b5a42f0ee39409ac72a84ab1fb5f0218dcb23b108111. 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/ESA012048142.