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 0xbae65513a536f4410909d78702292a1e9be778ef94c66b92e130c4275135133f. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87af4d34-a8b1-475d-ac65-cb1653ed6250.json and https://artists.proofprofile.net/proofs/artist/87af4d34-a8b1-475d-ac65-cb1653ed6250.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 0x821e9b6c6043cfb35b53239296dbabe6908f8607d9d38b041fc95f6c04ddd533. 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/QZW9N2208922.
La Cumbia Sampuesana / La Cumbia Sienanguera (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023c046c3da247a23837444461bd7df45ce505e8450d9d1d383e5f642a73557d. 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/QZNJX2431920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c1d594add035af1bc62aa16b06a2b8bf9b49d3c4fe26dc69ea88556c86fc96. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJX2431071.
Charanga Costeña/Pantalon Manchado/ Quien Me Dona el Hoyo - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8442f44ffd36f34a22b394148312cd017cb190a784eea65dbafb46e57c74eb. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNJX2453781.
La Muerte de Marili / La Tímida Señorita / Carmencita - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb25a13ad505f5a275d0ffda58feaf4b3800925ff9960881dff7befd97b0a930. 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/QZNJX2453782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b306b8761888acc92d689bd0facdce0812520690391deac567912c1d9bece8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:41Z), 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/QZNJX2453783.
La Cumbia Sampuesana / La Cumbia Cienaguera / El Ritmo de Colombia / El Agua Loca - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0edf570648a7d02d9a5b94a3dbbefd4fd2031940730d91c1882c797bbcaf40. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJX2453785.
Corazón de Acero / Mi Pueblito Alcholoa - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d398d33cd8dc7a9d8a6ac57273e79a6a9b0d4656d34caedd14867042de9757. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNJX2453786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5122964ed1648342efa05eb4d937f00793b6c98eb3247b5021c47503357d52. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZNJX2453787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44865233c7ade2508716e6094db5bdf04261d57176674399fade63860729fb56. 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/QZNJY2438888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70874bd2ea3397df8c817a28bd0817537ba3b326de3e63c8954ec0b440569e3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNJY2438889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf899ffd816dbf43b8b3be8e7885d1414f05a43d9bce7f27c105a5931ae81be9. 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/QZNJY2438890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a63312dc7fd560b872cfbaf6371dec7cf6dcf8fdea522b6199164c78b432fc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNJY2438892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9e380f847e8e6ad47e776ff93241126f2927933dd4e08bb718f41d92cfb023. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:32Z), 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/QZNJY2438893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5e813e8adde4bdb2d21ad960282c88c331caef308e6b1459aace56303fbb47. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNJY2438894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f944fd2d789ee0e6376cde0659b2e319ce583649cb4239878352459583edfe. 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/QZNJY2438895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ebe0333c6bd21242171bb0b5199ef4a02723df797823dc7c31fac9af332061. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNJY2438896.