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 0x84772bbfa8399c263fcf10e5d6d1ee63394c67e6fc886907b93a012969a6d251. 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/13f3f406-2546-4fd3-94f4-a6d7ad054640.json and https://artists.proofprofile.net/proofs/artist/13f3f406-2546-4fd3-94f4-a6d7ad054640.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 0xc2e02c1f23297ec688d1924fdf7a742160a9bcef8039b5bfdbd27bc5160cbb85. 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/QM7281777240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68636c4758b0929c2bb72a0bf9eafa668425fb93ad74b20de259c42770bf6998. 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/QM7281777242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d091a2bd1e417cea68eb1d677caa85873e6a54700dc169e762c2c484284e45. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM7281777244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbee37ea41759f96f7913e96bcbcbf1b93942d99caa63ea718bcf05d6adfd81f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM7281777245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d35af83a5155620601056af1e8aa31d1be819c8703c58b618919b7e288cf1f5. 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/QM4TX1941951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca78149b78c13475a94ad597011b628021c41b56e859be365ccc71c37f07a235. 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/QMXQJ2015401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308d002c9b9f9ad3d2b2406a3c7d85fdc6ac3d659dfebded3dd61e402ab4b9a3. 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/QMXQJ2015402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc271a140f5c688b41ca8c468fc66012d78bc2c01da91e49a14bd0c89e29fc7. 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/QMXQJ2015407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e5ad3115408d46ae6c0197a4434ea0192c733ccf03131407bb0c3d78522f9d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMXQJ2015408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308d002c9b9f9ad3d2b2406a3c7d85fdc6ac3d659dfebded3dd61e402ab4b9a3. 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/QMXQJ2015402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b1532e204748ad19d1d0a052d51f291d9f76514d768333f88273f54b6dd69e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:10:14Z), 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/QMXQJ2318306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c24c0e3c21ae1d32a0c4e08dbe2e86334b32b0aa808f104f2e23bfa470753d7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:53:05Z), 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/QMXQJ2318302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e5c4271e91e9d9e2c177ce9a38b0f11a88303f511cba362905a3f7c98a2d25. 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/QMXQJ2318303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5476510cbb954346b15d164a1dde784c836daa117ba009ceccfa4346466a012a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMXQJ2318304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39f98f752e37840542b51221850e7f9ed6cd49b697d0a5ac272531f37b8b4da. 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/QMXQJ2318301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5476510cbb954346b15d164a1dde784c836daa117ba009ceccfa4346466a012a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMXQJ2318304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2956055abb378d3a311e3cfe17420de9d7b10ff3df0f00eb721caa2ecf132720. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMXQJ2318305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e9cd4626d28eb265841d79c795849d207ce63a0bc8844a1bedecf2a8b20c82. 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/QMXQJ2318307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b69294c882699ac5dbbc339b8d7f94705e0c8ed547f9d2dc6b361a5f6b40a2b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:23:52Z), 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/QMXQJ2318308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a7cedb503a4373f423f2caeee0df618f252e874b3c42fb5cd83ba04d4960e9. 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/QMXQJ2318309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399a17aac0faa9a2a83f5b9a45113f2ef7d4889e65ef69f3da1d02e004970cf3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMXQJ2318310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741c245b0988e721daa515350dc9dccac35377a8c1817dda2db9c84c9d433ad4. 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/ES7002473501.
Super H (Homenaje al Super 8 de Los Planetas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad865f07abd2213ac8695ca5638c2ba9b22107a82bcf72c836a766234fe7faaa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ2522456.