Ottawan are a French pop music duo, who had the hit singles "D.I.S.C.O." and "Hands Up (Give Me Your Heart)" in the early 1980s. Fronted by Patrick Jean-Baptiste and formerly Annette Eltice, the band
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 0x1f5257772790d0d63dce01189227c01e1d9aac3cf0667bf69db3cf78bcce9760. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aefb18f5-2ffe-40a3-9f1e-0cd408bcae09.json and https://artists.proofprofile.net/proofs/artist/aefb18f5-2ffe-40a3-9f1e-0cd408bcae09.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 0xf1424b39c1ee3d115c7eba2c7a6a15548f01ff0a560cfd24c1936178bbad49a0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR58F8000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a45f66081d8d77f55794aaecf80688456fdab5403141f047850c4e20bf874c1. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FR58F8100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d2ab6b61d1a574b26689f0e4446d49ffb6c95ea2ee5fb1cfb77ddad47a8f94. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR58F8100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64838c7cf0b4d3d31fc90353b152d6ea393021385143b5b3202cf199620ebb83. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR58F8000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc78b4003aa7c3fd114e761c02b6d6191977c589256432a5b77a1455f9267e10. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR58F8000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f94057df6d869126d19348c9ab35e037f32f37eaa0f1cfd798c7a861d3144f. 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/FR58F8100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf677eeec56beaa0590e466b574283482a347a3a8876c047ae5cdf5ad94438f1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR58F8000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc78b4003aa7c3fd114e761c02b6d6191977c589256432a5b77a1455f9267e10. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR58F8000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91952562408cb4e7f40f392d5afa223a0923bb907bd9a70e82e18c15249ad9ca. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR58F8100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ee640d2f0654161adbe2dfa4f36c64ea4956b8068953a9e496ba98717e18f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:25:08Z), 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/FR58F8100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e974e20e36c853b196843618087a1d12c85ebfe2e0605c6f9c9aadff3572f0e. 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/FR58F8100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35665f1561d32acbcb9a7a5be50ca47c2c2f77b26f8adfddb4bda53a33a0a495. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FR58F8100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe938342d468a1702141cb2272beb120ba9285f586452b6c5d2746f394c46f8c4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR58F8100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355af5bc1b7a416862e3e5d25a67b843d1c1f2c8a75c0081e5a60e766771e6cb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:02:35Z), 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/FR58F8200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ac3ac6511ce4d91423a4b56ecd56c485fdc82b042e6352168e824672ed661d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR58F8100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a45f66081d8d77f55794aaecf80688456fdab5403141f047850c4e20bf874c1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR58F8100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb555abafba8d195a7efbcb65d36b7e48ac51f6f6f3a78e278e3f4f1a4127b0. 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/FR58F8100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd279a59a6f5348e4781f5d20248670f166a6841b5e9c205206fa2bf2fa4ae5a4. 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/FR58F8100140.