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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf745dfdd595df0140f4cbb8eeb7ec50bb36ac9f9186c15a04567ff98ea027b2d. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a04e931-975f-448b-9042-691d1afcbe10.json and https://artists.proofprofile.net/proofs/artist/9a04e931-975f-448b-9042-691d1afcbe10.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Presentando a La Orquesta Cuerdas Latinas
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c96c7982089d07dbca9019de6f9da7083189695a4b308605ca97f59985279d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DEVU52365437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8b04fbbc9356012f6453e30e552171d631a18c6b86a81f22b8257f481c8a95. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEVU52365443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579eaba7e98c952a6d97b167be1738b54f5f003468253324d6874edf5f7a36a8. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DEVU52365509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f1af034deb07900458e1d4aadbaee8bec37e166a4c914d96a0b34f3b6396da. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEVU52365510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d3aba2af818b9c216030044366df84851bc55cfe9d48a7169a7b94f3c13da7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEVU52365615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe175acc9cd1b300484ec8922da3a44313fcc53f869d5871b86c70359b32d8895. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/MX2629779613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9369fe7b356e73eae2d8d8f1645868979e2881353e60ea67090b7a27bb961d44. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MX2629779621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fee474b8c5f69efa911a9449e76451843958f620ca5add497d5d3fb8e01968b. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/MX2629779624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9291726f0200c4d3b9f658b412ded7e4248e1b459abb94b6746812916c23c8b1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/COATT1900706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8cdf298639f4253cd1548641e11ad5bacccaf9c2075ffc7c01dff225ba70c5. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/COATT1900710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa971d2ecba18232c2779000d2811cfe481a5f630b7ebacc6e2ea0cc73a2517d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/COATT1900715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c1fa24de2c8f1d4a750bebf1f45140eac159743c2418e4af7a6b87eb80443. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/COATT1900719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401b3012eadc293027cf2987c80f2354db85dddab78b023976df5c21faaf051. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/COATT1900721.
Musica Maravillosa Vol. 13 "Concierto en Bolero"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c1fa24de2c8f1d4a750bebf1f45140eac159743c2418e4af7a6b87eb80443. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/COATT1900719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaee916394e5531bfbd5cd2693e6729057988a92d2cd56ace4df25c8db18ddf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX2620776727.