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 0x0b4b28fd4cb44fed8659bb86536d6ebeefd4e20b59c7ef1bdca21f511b0a5a36. 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/701f3b94-e6d2-4690-bddc-ffb370820156.json and https://artists.proofprofile.net/proofs/artist/701f3b94-e6d2-4690-bddc-ffb370820156.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 0x58cc81f5cda512c67711468700db181b991920742e61c7fe448f476866b6dccb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:42Z), 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/LBA0H1700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54f83fc96eb84143feb90c958474ea7052d5cbcefeed59f18b44caa0f5689dd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/LBA0H1700824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f45be24a8e0ecbb8819f8c991cdff1d9f02355feb94ab054f148f13c9e490d9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:06:01Z), 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/FR10S2014784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4129b931130ea6ccad248c4ce0739ec16af6202f9f2e78cf1020c790aafdcd. 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/FRX202081021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9d451b00d833515730df59a85ed1ea37fcfdffea26827e7d10bbab2d9ca13a. 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/FRS182063837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfdbc0a260c3e2aa2049d601abf843b025e33b98bd16ad388a234b393ec4990. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRS182063839.
Baba Noël - La Relève (La Relève, Maghreb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875be478e708104bf18d3f2ddd5eaba42d3e1f7d489bbf101211da6118980f5d. 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/AEUM72200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6476d9888f18dbb3e8d92a29c8949b10ac0afdd4aa6fda858c73ff56de2c2. 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/FRX762311227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb451877bb80d5586875f38a9792e5f85941f212c964bf7d7e32031a97d53b1fc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX872369622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bb5fcd2776618ae233ff97e3486c2a9ee062e8616e932ff320a2dd72a2fcf9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FRX872372759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e975d56ecdf9f6649ec9d23e786af8ca7e0dc70cdfe1f01d5c588b99c568776. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX872372747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccf9b8b2f37b76a6630330c71d2e951086800d6e5a0da0cbdd975f60289eb40. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX872372748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c50622f92177772fb144d847c436d2b519494323331fdf340ab95f44417af74. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX872372749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d749000a12807aaa027f680a165c2a5f6b3c1a39ffd61d4d20ad81ef1c1d6a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872372752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dcc24667ddf7f56e207ef69b502afdc6b4540d5be2d0d681d63ef1bd6f5be3. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/FRX872372753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509a0ac306b6bc28cc0bde23ea04ec5b87cd9580713591b1e2daae5d1e7c122e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:41:58Z), 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/FRX872372755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f806d3fa2387088d90d70a61e2eb744af6c7cbb95d3318d1ea012c25e35c4c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872372756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6476d9888f18dbb3e8d92a29c8949b10ac0afdd4aa6fda858c73ff56de2c2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762311227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a3b96fc4afd91e2fe04219043af358645c38d94af3a66719991bfb8d69b0a. 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/FRX872372758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60362c799d4231c505ff94f36abd9f05833f5b072077a4c53d2f0038a2573d66. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX872372760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dcc24667ddf7f56e207ef69b502afdc6b4540d5be2d0d681d63ef1bd6f5be3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX872372753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a3b96fc4afd91e2fe04219043af358645c38d94af3a66719991bfb8d69b0a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX872372758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef292d83b46c14032e9bd48379fd11a044935b940a57961e948634f844d1eca8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX872372757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6482ce7117bc1158a3aebc2ea8cb9da8c6eb60895e09b37743bec70dfccfc5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:17Z), 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/DGA062338473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c46a90ee4e6ed70b6277231397ec77eb0458f82f3470051c492456cbadb6f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W11905431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36d5bd4811992a9671c866c301407e52641fdce1df92c4d8af9167727a493d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W11905439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9544b69d071b6bbbb0ccd685fe3ca4ebd15f244626496eca5ad3205e54e34bdd. 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/FR9W12443598.