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 0xf6416087fffc4d21bfbb3bc66aee1d51990294a964ad6d4a891aaed61f1c8025. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de61bc94-6a0b-4145-9d2c-43bdea9d1e0a.json and https://artists.proofprofile.net/proofs/artist/de61bc94-6a0b-4145-9d2c-43bdea9d1e0a.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 0xfe2fd0a7bb29535eef79a9e3406e58f8e812a5b1817dfd121e5f6bab2924fea0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX89G2590934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff11801b5e28a80322ac61e91e9eb7249da2eaee08053a45b8fa185f7718b27. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GX89G2596412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a046a9b2b11d8982091fd3497f6e32bc5996c3d11f2377c55eeadfe1ced85c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX8LD2559784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c19550136dbced224c2b3eea80a5df8abe842403e28c74546ed60d5470e60b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GX5MX2422352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae6d108299ff06a84062a561e4a7bfc2ca414668dc8f3cbd2e95f53cad93486. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX5MY2424595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67380a565755d9d37c2e10ee95a0f4041ff10ad5e1ac4a8105c39c548231f9c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX38U2467253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d23885e4e6fe0be0b2ca40a41a8230f5c95495c5693374fd113a6d50de7b93. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GX38U2461090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc679d3ba7a2f6c3e8f9b0cff1335618e6f73a1caa9464fca3952d8f3868844fb. 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/GX38U2486043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e26f4c95d51fb027df1481205161d0d48b57eb09a4c24840643a3ffc03f475. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GX38U2414581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16adbca7f2675eb27d20ae5421d43422dd043cc8ab4a2b64f87a35a484e3f77b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX38U2423658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6058581fa6a0e264408fa3357750e37e6644f89ca5eff536cb9aa1955aaf1c00. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GX38U2485725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194ebea68e8780518de452868380d62a3694ac5d40739be36b73cff6654a77a3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:20Z), 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/GX38U2498255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b22c3741f0bc8290c4d178ec0b38a889afd20efae417b9b04a2a38ea782ad2e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GX38U2459875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba08869522415a146c829ff36b7fbc67ca2a7583037fb51050489f0a2ad70061. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXF972493719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d953b158d88ca63857ea7d89851b3a2f4e3f4943f54e5d94424707304580b08. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:03:43Z), 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/GX5MY2590238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6004a0279f8cda83dc2675c0775063c888bed4127e0e6f46f6138edccd517033. 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/GX5MY2571244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8428d1f76ff6e035b86407d5a9348e8adb05fc39b818eb20bbecd320cf5e40f. 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/GXBDT2569740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4bbd1a29b01e1228148c7175265adc19c9b5ae8b03ee1b27f6ad0cec04849c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXBDT2518257.