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 0xb6ee426d71643fbd6dff7a9249e5516a4309771d5a7b7ae7e5a27139520b360d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47c0db8a-e8b7-4442-a550-71b22f3f274e.json and https://artists.proofprofile.net/proofs/artist/47c0db8a-e8b7-4442-a550-71b22f3f274e.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 0xdba42961a1c6e51591dfda3f5d17353ae1cfef349ab7fa048811b4274318a676. 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/ATB641700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cf58bbe0831fe9164d4374b76443ca684bb09bdc44bbd040afd3a22ff5883f. 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/ATB641700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe64fb7bd70fed6f77d8f4c15378d5f36a2966ecce46aa95861c123be6365bd6. 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/ATB641700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaeb849614d49d57f5214a6e9a03bd01670e2f770e6a1ccdd8f5d4dab236a44d. 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/ATB641700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabebfb8c68f7e989c883b588b39880bf18ba852dcabd2575c9fd624d59dff2f. 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/ATB641700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2bfb0170a038a44b7c612093990166586dbbe24d9b53c4b71468668eab3dad. 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/ATE068500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1003700d225902b25cc449407798ad5fd43fbd311b232c77b9ea7d28e6acd91c. 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/ATE068700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb21a390d748f9df96e2ba261f31bc12d14115b1f9d7f6c02307903c21f816e. 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/ATE068900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc337439ab7013a1f226775d7109d809026c0c7086cd356efabb991d7d8531e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATE068700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee61e979e6d889fe19c6e58e67f0b75b3102067a41e522a8ff8c18a2d5c8b29. 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/ATE068700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2a37fcdbbabcad1d892832cdfa0e5b78cf80b303459a07001e4366978db3c. 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/ATE068500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6b2de62a0e5ea0eb97a626e7a6b41a0e6e83fcf53d8bb33ffb9bb87c28e8ff. 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/ATE068900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6f9158a8f57680098158c2c6dce174d4181262aa6de53eb6b809248e01f28b. 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/ATE069100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a77f808107131959e58066e0a57271eea16ae3480aa7990565ce280c0d03ade. 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/ATE068700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111c80ea06d8d3ce0117e2c9100ddb6cfe6e09fa81c3443e9caa6732d1e2d873. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATE068900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acd961760c75085f00c14789dc7a47ce490c034afa8caf9ad859fe3e3d9121c. 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/ATE069300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3878fee775c40ab9b568719d8e8ad7545b4b22da23abf5620b4411652e7ea6. 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/ATE069100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe073288a3c4956b7da9f78ec31796ab6537eef020ada298ea12b02caf58012b4. 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/ATE069300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592d513be1b3e9bdc6957afd3821e26e61c1b7be81f6d153f89f2ce4508d297f. 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/ATE069300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3878fee775c40ab9b568719d8e8ad7545b4b22da23abf5620b4411652e7ea6. 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/ATE069100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb21a390d748f9df96e2ba261f31bc12d14115b1f9d7f6c02307903c21f816e. 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/ATE068900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6b2de62a0e5ea0eb97a626e7a6b41a0e6e83fcf53d8bb33ffb9bb87c28e8ff. 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/ATE068900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c2ac1d3631ab012082e7febb2def988242d65fbbe2cec936a53146bfd96c7d. 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/ATE068900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111c80ea06d8d3ce0117e2c9100ddb6cfe6e09fa81c3443e9caa6732d1e2d873. 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/ATE068900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a77f808107131959e58066e0a57271eea16ae3480aa7990565ce280c0d03ade. 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/ATE068700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1003700d225902b25cc449407798ad5fd43fbd311b232c77b9ea7d28e6acd91c. 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/ATE068700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee61e979e6d889fe19c6e58e67f0b75b3102067a41e522a8ff8c18a2d5c8b29. 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/ATE068700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc337439ab7013a1f226775d7109d809026c0c7086cd356efabb991d7d8531e. 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/ATE068700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2a37fcdbbabcad1d892832cdfa0e5b78cf80b303459a07001e4366978db3c. 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/ATE068500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946a14816a62b38b960f0fce78132cc9054c7d0015b475cad6192b0fde91215c. 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/ATE068500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2bfb0170a038a44b7c612093990166586dbbe24d9b53c4b71468668eab3dad. 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/ATE068500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5976a075c2599c2b2d150bf49240f5aaba7030ccba83a980061cc7a76c1ae9a3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATE068500210.