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 0x3dfb22a2d276abcc2f420139775d8fa8cbcebf948176ce4064075e984309ac8a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/283e0f74-5681-4f98-a7f2-8ec9e0b473da.json and https://artists.proofprofile.net/proofs/artist/283e0f74-5681-4f98-a7f2-8ec9e0b473da.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 0x707fc58b854e4fbd0d09f20b45f9ff6503ab7f7839b9686ef6e3c4107d5a64c7. 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/PEKJ11301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61da31703127ed03cd91544c51f46c3f3319239e515c89c8d8347ab641a42655. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/PEKJ11301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4a0d2cf21788eaae7a7f45c7e00f051ef27c9b963b71789fa4e390223d8488. 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/PEKJ11502007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6c62d15cc97a5e47a74dd8dff12486465b0a174cd8c04e33f89e5d4157d1fd. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PEKJ11502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee346334d1bfb92ca742ea922aef19e3567fcbae98ad7570865a5085b6d80103. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/PEKJ11502012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb6674767cbfaff1e9c70cc81cd00bedee80003d644246b630c0b134bebac75. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:42Z), 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/PEKJ11804170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e35ea734658f358daeb160359b059cb941613116d67c6c8f9237a72938e6e9d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:43:06Z), 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/PEKJ11603002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6459b1eb69ea7b9398f0ef2d92a27798bb770be39d5b59a8407f8ba3bc21e8cf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PEKJ11603003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c285736040e7ac5cbf2afeeccc1b4def4c9a2f8e4a6f4375b81bd416bd2c8c. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/PEKJ11804176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e434f9593cf6ba75fa4109164c667a07ea2e0da12cb413e0a83ba9e56c08dd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PEKJ11804178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21eb26847074c19e85cba5b6c89421b15494b94a68766b60721ee5fa8cbdc47. 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/PEKJ11804167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514e0c6a59d1c5027a9917bc364960bbbda1c015cebe3339a0421345fad63e6e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PEKJ11804171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6434ae3fba78dd41ec752eb16995cb809d20fbc19f3c64f9969aa5da37b75c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PEKJ11804177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e1f2464d5b977f381e53b10d8f3d374b8b6f82e17da71c99b3be5418bcdbad. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/PEKJ11811042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff56e4ccc2f4b7e0f3e22cd091b15e5cff667392d73eb66336fc408f040dd750. 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/PEKJ11906001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae38e20d1922517ef47b955dbbd030b9ef5e29e54626d9002fe4a5df095b7dc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PEKJ11906002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9618ac5c1a5b51295c39b02347cbdafc80c5b3fa40967f9746a1288e71540b7. 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/PEKJ11906003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee55075cf1ff7e61647119bdfda135ac972bffc5611af90a79fc650e8c32b642. 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/PEKJ11909010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5ff3aabb35dedee0620b49899f388b3e4463832b4925d99f1aeae537943025. 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/PEKJ11909012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778f390d13838a1667f1d9cefa4bc1145f8af40906e6e2c682f388ef5222f41f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PEKJ11909013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed37fa435b0cc74c52cd6ee4f798f78305c41498637d4463f0bf4d80271b8aaa. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHZ31969253.
ZAPEROKO La Resistencia Salsera del Callao
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cb8a582007baa165827b964060800beeb40fbf6b51de8670d7c4f471c4bd0d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMZ92191903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecbe2c78304ea3b1bbfe7046e348e9d8a491c4327aa4a367d4a3c9d7d5400fe. 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/QZHZ62173847.