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 0xbf46f48de16926ff3ad9f0f96d9ad6205b337deabfcd7918a54dc5b2382ddf85. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c41a146-c57d-49ca-a666-2fdfd184d19b.json and https://artists.proofprofile.net/proofs/artist/1c41a146-c57d-49ca-a666-2fdfd184d19b.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 0xc97e416f324b67cc813d0b9fc090e4442f3e587c006f84d53f5d545dd5043fc4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN82103689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a11ba4bcb86f66edc05801bc68e43c8c5258031fa788c141e58fecc76e77e7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:48Z), 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/QZHN82103690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eacfd1e9a31ac7e78b8b2f6ad27b423d4b1c49a0edc1dadab504ef64f0e092. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN82103691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39039278957bf6d9b2188419e4724cbd33b84411c71be322e5b62509d2c14156. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN82103692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5752566a1dcc187ed2e171eaf174c4059c1cd65a19b2932f5af61ebe0bef9. 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/QZHN82103693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5d90ce66904fd91ae7a12628ec3fcf3adda76f2942d2ea8fa28bc5df06cf62. 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/QZHN82103694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c26330a3481fd7c3db0216e5301819d82a5e34d9e438c1f6632d6e129d187b. 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/QZHN82103695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8801ef1d5e8ed2adcc0f5e8f7e4ba2b22ff65373473db30f411d090982f2117. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ESA092312491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557f8c0b0557ad7e1f1b2c35c0873a61d5e45af42783c9107e3f4675aa1f4481. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ESA092312495.
La de la Mochila Azul (Con Huracán Romántica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979241da185ef6a7351e253830b4db5e9bc00b649270e9b94a80bb3a37f88d3e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:34Z), 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/ESA092312496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc09c2735efb23a82bcd143493448df82771afb006a0e1c2feb4f4fd31f8490b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ESA092312497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d5dc64d30bd3651774cb22cf72b749d1bd9688a930655df83aa34485414beb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA092312499.
Ay Jalisco No Te Rajes (con Dani Despistaos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7e0515a076489b750297b5115df0322861bc118cfdb97e9e89127f42b6b836. 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/ESA092411899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c4fb143f836f5922e61cfa6efd6dbe7972d15f88ff9112c002971b0e6430ca. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ESA092411900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e08367d1f74781bfe16b36f5ea0ee212a944a3c708b269870aca7a4824e3d5. 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/ESA092411902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e39c5927d9834c478afa18b8203b0e2848c423b5726c3c1da7edbcab4391f59. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/ESA092411903.
La Canción del Mariachi (con Kutxi Romero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25203466edd35eb6cad26f0a87b9ea18e61cdee1aab3a5707534c0d686e846cf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:23:56Z), 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/ESA092411905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbe5f413e171696de0a4b710b9dddd62541d79825c077c88f8dde6b788417ec. 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/ESA092411906.
La Venganza de la Llorona (con Iker Piedrafita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c2503d549cfa7ecd25a28b9d6c519b5aa3e1f0e561f32e11b6ddfb889ade93. 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/ESA092411908.