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 0x39f69f42131e18d45d4154be9afb3fbbb41776765c9c810efd931c4cc4b3c2e1. 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/37be4e16-06cb-4391-a205-20340e2e43fc.json and https://artists.proofprofile.net/proofs/artist/37be4e16-06cb-4391-a205-20340e2e43fc.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 0x33c78139f7e5a08bbd041d8679a68d63bcbaeb0600fbd6947bf4d1bad531f9c0. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:36Z), 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/USCGJ1691362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1751428aa0c57a26cfec46b134a8264a245e31f8965c144ff42fffcdb07fae0. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USCGJ1691363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6063c406849f0f594d5a528b34f079cad1b7e68e1e3ca9f9a26a3e970dd50c6. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/USCGJ1691364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bf7ad969fa6dedd59a2905f97804a3e5edaa4355ccaec033cd101a7119b3f3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:30:39Z), 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/ARMBT1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086bed5d173feb19029ab8b1a88b997e7dddf4c922aa76acf9e0a1cdc7dadff4. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ARMBT1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cb8755b27a9ec793fce32f87dacddb911858e8a914699bc1ea2c79b6d6c9fa. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ARMBT1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ce41d2e947981ee333c740641d4a401dee4590216387086c3cfa1817b3a6eb. 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/ABMBT1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80db451e2f1a9291add002fa509186926de0345de6f8e133f8d201ebb1c85c56. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ABMBT1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db4245d51cad2813ea997aa81bd44d26a784247f265f467fab8f29c2621482f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:56:33Z), 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/ABMBT1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a86e2867e32ddff238bd74a2ec90c6d5767a3cfe61481a0d21f0f5cfd2893f. 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/ABMBT1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2d5be29f5381a4f223d065d6361c0d856eefe54db1a2fc227c968e21892b5c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:43Z), 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/ABMBT1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2459e528e973941df5d7094963dd234e8a273ca3dcd5b118fd594b66c58cd4a3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:48:03Z), 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/ARA491900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ef686d53c80444ec7e5455c273e52b773540af44937c2b6cd4044a6d5f924f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ARA491900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c71e8dc592a1e3b5031d1a814a3ba5fe827f792277add2eef4ed4f42040e26. 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/ARA491900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847c5eeb1b6dc2493e1ca0ad86519baf7da25fd2392159524b0d39310c6f5f8f. 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/ARA491900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d863c34a72fd025afd1715fa1ac66ccee2d2c452592dc6e502d6a754d079f4. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ARA491900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522433f445eb02a5bbbfe4441938005e09e5db3fa9910f9635316f6fc907d80a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:54Z), 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/ARA491900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09eeed6f9970229c9c8ce9fe7bba84560dbd8596517ee05184455eabfb27b1c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:58Z), 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/ARA491900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8db317cc7c869903efca808fc5d3a5383d1a64cd86e5a2b073789afde2354. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARA491900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64a5bfacb7dff87dbd34f6ef0082d65d1313e37d3201ec7876df418122ac753. 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/ARA491900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cf5232a07ef03b458c6a4a82a28ffcb8d27c6f22ff1fb41f75a993fba40dd5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARA491900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2643281fd6607a5452012f11bf2d1c919040b1b8455eeb400c633bd8e5f3c9e. 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/ARA491900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49fc0e946fa19eef1843d9549a21f8be55218afd056470eef5534e5f1a650a0. 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/ARA492000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dd31954e812acd01645ba56f53039f14b14a733b71da262f2f3130c1d90bb4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ARA492200147.