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 0xa69b257be7860422029c3ceaea19fddb7a606d560e93c15c9b7340deafa78a2e. 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/95608195-9512-46d5-9230-29399a86d80b.json and https://artists.proofprofile.net/proofs/artist/95608195-9512-46d5-9230-29399a86d80b.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 0x68b0af995ee46c49f8fd9e09186e18906a900530b1413438690858aad683a335. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/ES5150800120.
Despertarme contigo (con Tarque y Pereza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6705a03fc282c07c26fd4af0cbe70a547f6b75fe58b630ac505e6b0286818649. 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/ES71G1631829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c647bf8595bcca3a939eeb826e08adfa9d011eb6105e217ef0f5d7f8628e2eb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:35Z), 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/ES71G1631835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf399539ec85009c339747b361cd217cb291fad09e0350382fa3b08f7f7b421ec. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES71G1904192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e1d2e64d7531982d6a06fa6e532a2a887686a0df8648583965ca4788ad2a69. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:09:20Z), 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/ES64E2311636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7772efad17a71366615f833dc46c437328de006d29ced3179f900a8de9bba76d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES64E2418967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c70362f3195f242332664f957660ced0728263b50a8913f1ef0f952a615e78. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:50Z), 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/ES64E2507187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7772efad17a71366615f833dc46c437328de006d29ced3179f900a8de9bba76d. 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/ES64E2418967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e1d2e64d7531982d6a06fa6e532a2a887686a0df8648583965ca4788ad2a69. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ES64E2311636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d38ff0eed5d9706dc4b85293ee42eca3697634c419d79d204485455a490b96. 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/ES64E2507188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821d4cb20cb9cd08fed3ffb133362aa522ee4c08aedb40601ce3f953d2845654. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES64E2451576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d365cde75d461fd3678ba4d3d9414b04f1e37c26b2bef2d9f57b480824ccab. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:27:20Z), 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/ES64E2505264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815a84da9c23891925d3359b2845841fa5f1e752a281560c9828c5e3a7122b19. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:41:45Z), 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/ES64E2506758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca92d815cf4d10cbcbbab049f35000f4569cbd8293ce00cca5adeb0c59cb2d20. 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/ES64E2507191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96585e03c1afbbfc76025b8105509bc79c94c3cd25d916d9fc9d67c0e175d5a7. 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/ATX792310001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b0c1c35490f67f4028d081f5aa2f6e9c4864b55d25fd060cab48a444fb770f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES31E2306324.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca74cfc3453dccc045ba9872b19724635ff963569d8ddbd1c0fbe04dde83d1e9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES71G2422822.
Quién Me Ha Robado el Mes de Abril - 2020
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bbc96daeeaf73dd5039485fe0f1a814b4ce4af98fd495b573616e75a51f654. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2021500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64854c746c66a8a07894eda6bd7ae31df908350a7681c8d4360c22e2309acede. 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/ES5150900539.
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