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 0x48c74b607350fd1d85d49d0cfa58c41992f41fcfcb52c51a1040471a8f08de6d. 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/021fbf1f-703a-465c-87db-fce8c674f315.json and https://artists.proofprofile.net/proofs/artist/021fbf1f-703a-465c-87db-fce8c674f315.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 0xdb823a2002380006a2640df65e0eb8fe65ad7cd3806c26dafb253b32596df6b3. 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/QZHN92281705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d551fef434d194069a6064caae22663a8a4aa998d6bc0f96b2dae89410dac3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:12:22Z), 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/QZK6Q2257728.
Las guitarras del valhalla,con sonido master
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ba5a6a94038548a00a4a8b306fb6e3f58cdb1868959ed645f7dd24c883a69f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAX2248987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee77dc1d74d7e35aff384434c43e46c7ce0306572d76390132a674abceb9915. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ62337244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebdccd1147c5628a39fd8eee640c00cef8448afe7135f605bb8f75e63999ff9. 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/QZK6Q2301152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80eab770a4de85578b1a0e170bf92e1a1268c8c4d9cafd4d52f1605f26f4318f. 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/QZK6N2362790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f78849067a7d0299ed7f411c33370e69e88191ed1e9a4e6e6efdfa6b79f943. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:03:12Z), 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/QZNWR2396231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3198421cc7a4bc02b8de0b21b20562e9a97c74a68d577fab8296216b9547d05f. 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/QZK6K2418982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a78c48764205cf3749cef49bb6d9406cb1232b16a911fcfe4d084d9d486416. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZWFH2438567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b9008c6344305317abb222dd04d666f959bc37e2f133edd44ec3a260e19937. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:34:45Z), 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/QZWFS2441770.
LA CUMBIA SALVAJE, en vivo FANIA 97 (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6a5c33ceb038150a37c2e7e28d0cb060353e7d96bf9a85f67287d327dbf246. 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/QZTAW2537621.