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 0xca3d25e94942523d3d1cb10ef888c82b2786f1273852e724932d27ec138a0273. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1681bb0b-87ee-48ed-b1da-cc6afcf318db.json and https://artists.proofprofile.net/proofs/artist/1681bb0b-87ee-48ed-b1da-cc6afcf318db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cincuentenario del Municipio de Cajeme y Cd Obregón Sonora
Kemasinta Truenabolita (En Vivo en Monterrey)
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 0x698d183acc443b969a5202c3ab0a59fc6e94a49f41004ad8e2d000599cab32bd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ32095527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848ac1a0e0eb5fc304459bbfb5a4fe23b66df82bf40fffd4ad1ff037a667c95a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZHZ32095519.
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 0x30a8e262a5e0c299e8a7c3f66e31b5d2d7f7058053c366d1bc553b3842f0098c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLS2057048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6c512ec21ae844cc8d250bfe60053f74526a824a7728f2f9794926161175ce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP1932534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c4c9c630717fe87a9fc470dbefd49bf549ca2ef9de5b2e3ed0042c123ac17d. 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/GBLFP1932983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3b9e9ad2a4796246c40cb138027ddc5b7d625f67c5c7469a4821f10eb508d6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP1932999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489d8cd9786652119447e9c29798062e7de319cb13c46b02a436473f822aa2c7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLFP1932979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe2bee80f61d9646bbfd3ee33d5b509ce583e6ef400ca4da5728f50eca508fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP1933017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d20acb8272eb21a03292e4a22348e8a0ad6607c07df671966743e8df6005d4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBLFP1933014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e181e41ef96cb6f28d83db58458155a1b82219e4e2d1ae30cb770f063b631bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNC2037518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641cb48e57d09f7b110b1f05df25fdfe1d495833ace1220c9b90c897f78bc9e2. 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/QZHNC2037519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe6e1845d686c442fefce90e440eaa5bf486041f45b5faf71a49e488a2a0e46. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNC2037520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ab44b3dd7573c7ce4c58608ce5edb45996cff0bfb1ed33626ce41d307c1e1f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNC2037521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce05a7a661ace5833fbfc86da1cb9507acabf10a89ea58b0fe600b03472b5ec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNC2037522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8e803cb1ed1417b4ece8eeed32c875102cdc6d4fd3b6e5a8a56c1bb19894d9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZHNC2037524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0af94605f86bcab4bbdca9edc321a680241904a745d6fe91f68606d502b00d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNC2037525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3b1a62e33f2715394f588dbe9df50f42e333eea7d4fb3190a40b32fec3f05c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNC2037526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3582cc30c4087f1022b5650ca9d9e948d306b76c493173dba7325e2912e4152. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZHNC2037527.