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 0xedea054885544c982d77bac3e38f10c4e6fc8773ecc4b3c42d177848873eed4e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b55009c-a7c8-4d66-b536-479e7a4cc695.json and https://artists.proofprofile.net/proofs/artist/3b55009c-a7c8-4d66-b536-479e7a4cc695.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 0xd7b9ab054154e8ee3bfb27662f69788ae64b2cb4f3da0ef6426ad9e9481d017c. 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/QZ5AB2397956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe8ecf4c00dd70da81731881e5191f4b522d06d928c2e804c61d5769fd2ed14. 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/QZ5AB2397957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8aa2d86fe7ff96e9110a3bb047d79b641729b4e3e1c770d4f8d203ef739fe3. 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/QZ5AB2397959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3d719cc4a6d9af85a9b74e647ef811dda80674c308e617bb74507089c7b96c. 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/QZ5AB2397960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cb1ec9e8a18cc3c8cf496dd463ca600bd0595be5011e297bc750a32a88fdd0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB2397963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bb798370687683340c083a2a33a24906c273ef925eb79a99082cabb323bb0. 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/QZ5AB2397964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2155b3cf2dc6c711ee5a1d4e0fab526fbb0bb8dd8a8a1660930b3cd76867d27. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZ5AB2397967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa06d499d19da2c809821fc9483068ebf0c4a6554bf9c19de0ddba8d368c5dd9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZ5AB2397968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e768c7fe997c02c60d4fe19fab1a9ac23b4236f4d6360c149d23759fc1f07c. 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/BXNT62207641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc087f691ce8ca4fcd9f36ac8370fc67956deb29e267648365e31062b05aa9a4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXNT61902588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e80db83a5779c983ccb5f358a5859b194b44b542e06e53c3798f0d63b0c2f2a. 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/BXNT61902589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671f2e456ba65baf67d0a1166ae8c10a4fb3b726b6e0288f1dfd7381e6a1b505. 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/BXNT61902598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e768c7fe997c02c60d4fe19fab1a9ac23b4236f4d6360c149d23759fc1f07c. 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/BXNT62207641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9983f25f0c6e922d0f416a4e1789fe8f1da6b8629a8af92b2bd2d97c107fcf9. 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/BXNT62203622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e80db83a5779c983ccb5f358a5859b194b44b542e06e53c3798f0d63b0c2f2a. 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/BXNT61902589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc087f691ce8ca4fcd9f36ac8370fc67956deb29e267648365e31062b05aa9a4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXNT61902588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc605e0188c986640d8cd06c321c44c4db7fc34bf23d4f00516e77695895d338a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXNT62300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8f23f33e75881622aa65be7cca13332f64dcb8f7cf4daa9511b5e3cb50c69. 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/BXNT62300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4ca3e28bdcac416b4b81392e18b512fe3a33ffd3a7c1ddf0f322c9bf4ff1d9. 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/BXNT62300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af9e964953e9bd24b418f1700d99b56deec6083939d15f3c10b5685d32eaed6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXNT62300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70abe20a6bc5f52737c3fab18356b03e4d7844ab76a9fd762b7e32affe6535ad. 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/BXNT62300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a346b847ff4ac21cf4d69a0727037668b21ef46f313d4a273c80927bcce80e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXNT62300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0a2d00be01f2a7f5348099d08866b2dfc35accb451f572376c5ce1085ac00c. 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/BXNT62300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b96b81f6cb190b0ed28c02d72989dee175d62cbae1282f21492fa85e7e536a. 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/BXNT62300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d45a7977e431401351d383655d2281b9cd3b3b2e652dae3a30d7033c9d6bb4c. 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/BXNT62201334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2febcc7993088153360c3a4e681178ef9c6d1695ae600d87678a31c7b30d7edf. 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/BXNT62200960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed56368341af292849246768423ba688b335b324658e61a20499ee410d10f12. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXNT62201064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2749d59076d582d190c98229f8f6a406fa8330a767c7f72b531c05114cc60cb7. 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/QZNJW2426939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d6853cf3c5dc3197a8222fd1b06dca7ddf290ecc4acef1df0e79ac8faa86f6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJW2426940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c4e693781df5097d359a8653c82a12a8dfaab65008c3155829f0022582633d. 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/QZNJW2426941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4e583ddbc2d5d1ab57ce4434b700867e9fff3adff2721b7fec84f1017a8dd8. 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/QZNJW2426943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278cb0f35d6352a00cab8a4875d66ef73d9952a5af33c0839a8d363cd4621f3a. 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/QZNJW2426949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe44f039bb9c5fbbce2811af9f8fae9572fd78ccf28eea8645aba7e5e0e90b0. 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/QZ5AB2290362.