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 0x65cd346fe77ef6665e824f1b7106e3e3e8ab647a630e6f01d67b82c7f1af4fbb. 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/805cc53d-3e88-440b-a758-eee2423cc122.json and https://artists.proofprofile.net/proofs/artist/805cc53d-3e88-440b-a758-eee2423cc122.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 0x2a8f5e31cd5b90a9f1b66ef0236f290c3bd5a1043701380425cd6a74111a9526. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QM6MZ1789663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0638e676c3cc48bd539ef42c05b7ba463cff466470c113d6130c9d54a4e8ebdf. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QM6MZ1789667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc487ee13428d9699ed93b2099c2d839c4009572f237992efa808dd5a79f50fb0. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:58:22Z), 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/QM6MZ1789668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d60f79c74869c45ac6fe689d44291a771102fb30fb00a20a01f1b0bb385b00. 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/QM6MZ1789673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8f5e31cd5b90a9f1b66ef0236f290c3bd5a1043701380425cd6a74111a9526. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM6MZ1789663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc487ee13428d9699ed93b2099c2d839c4009572f237992efa808dd5a79f50fb0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM6MZ1789668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d60f79c74869c45ac6fe689d44291a771102fb30fb00a20a01f1b0bb385b00. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:39Z), 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/QM6MZ1789673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106758017f6bc53a9c3eab510aa401a4c8b600cc765fd6c06e732a0ccff8075d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:51:29Z), 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/QM6MZ1789660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67fcd94756f4bffe7e40f2d876925e61ce6444d19558cd0637db4fec4c74120. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:11Z), 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/QM6MZ1789680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae1b58d03ae9637e7f172128b0294b30273aa5be9e7c8340889c1a66a776f00. 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/QM6MZ1789682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea488ec657dbe6533bb9635c242c5db40931390ce7fded56d3d096ef52fa9d9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6MZ1789684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78cab0474f07c07c1d24301effe902ba675ea1ce7addd2cc4032a2bed4a1200. 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/QM6MZ1789686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67fcd94756f4bffe7e40f2d876925e61ce6444d19558cd0637db4fec4c74120. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM6MZ1789680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae1b58d03ae9637e7f172128b0294b30273aa5be9e7c8340889c1a66a776f00. 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/QM6MZ1789682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ff45f0cde8461e78f60ea8434a33516d3f4ca21a8997cd728c3738c9fbf11c. 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/QM6MZ1789683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea488ec657dbe6533bb9635c242c5db40931390ce7fded56d3d096ef52fa9d9. 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/QM6MZ1789684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78cab0474f07c07c1d24301effe902ba675ea1ce7addd2cc4032a2bed4a1200. 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/QM6MZ1789686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455f90ea9015723123885eabb688a22c1f438c19bfb118f815508f0a7c861bd1. 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/MX4971533656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd731a1a61b00a5e430a8ba9a4ea682d229da2e4cc56f7f9d6ac973e7e1f82dd7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:43:59Z), 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/MX4971533657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc019748263d7aab147b5d50d8545e47d8759071ba2b32231370d0675757664a7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MX4971533658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc91f937e278b4d6ffec3fabeda15f5df25a2548e597dbb73bf19095c5c5e09. 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/MX4971533659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19670590bf33db78cb90bc83f7aac9412ca032d75f0b181e095bf7e030045b3a. 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/MX4971533662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0d0cdf082c40bbae1b40815273d69c3828a41686a8bfc2ad946030b5fb7b69. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:43:30Z), 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/QZGLM1901320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfc5e4d192969db3287197a22e2084339e501f4be07fc5d7fb087a71d0f6702. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:01:59Z), 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/QZNFJ2507550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92ac94999d2ca9803001bc12c95645d72991caca556d60a6a57be21132cbe54. 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/QZNFJ2508169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105195bdea7bd7870191b14900b0d316fdd80ab67ec9c901284e4a6ad338c5d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:49Z), 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/QZNFJ2508170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1266c737ee06f90990b14d958b173acf95903f8463dc19a84f28527a07fa10. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZNFJ2508969.