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 0x415c45571216b9b6e09ee5cfbde9fd8febe9a9cb803cb55ed3898743368a6710. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae8b79c4-7b11-4ef7-b17f-874c3619054d.json and https://artists.proofprofile.net/proofs/artist/ae8b79c4-7b11-4ef7-b17f-874c3619054d.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 0x6c7cd733ffcdc33a7426c6cf5dfd8ebeada2983a4216c12447d187240cd8aed3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GX8KD2457973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd3b441015e7b8b4e99c3002befc6c2c4183e2cef7e6b5c69b1f209e0bdcf6d. 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/GX8KD2428105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00248d7ad7142fca78a6afeb4269eafa646ce3981deae7194d3dd45055a1ab3f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GX8KD2435938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f44aadbe09faeaa09c9c6dca27501573c1f7cf5fb2d9087b12ac6cec43d728. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:25Z), 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/GX8KD2408598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ded6ab4b8917194615848a1176eff3571b4ca4ff4a3a5d9da3109de53b64aa4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:08Z), 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/GX8KD2409552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb8fccf84eb32898129f2aad0322396129722a4f46eb51b868a0b01b9f01284. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:03Z), 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/GX8KD2489519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef032f4237c4a7edcac3dd0fc54d90a268f3fba40e7232e669ff3bf6b59eb3d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:44:55Z), 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/GX8KD2410041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f6d1dde20276680044dbda68358530d903d3dc51a761139f6fff64069f6477. 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/GX8KD2427497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789bf2df8ef3cc642b750c7672de21ca5b33ed758436eb7942b424d9a2bb4f7b. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX8KD2472929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e6ada680d7274fd57f1e0e4d334a80040c0b5763507fb2be33c9d50616c3a. 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/GX8KD2467238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae263f662d74a521cc89eafb1af27d60d920b516a4830482ee1cc5f7d97c81bd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:20:15Z), 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/GXBDS2495365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e36f350f4fac5a9e4c1549d6da2b96dbbfb279ee777b8281429d6629349974a. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GXBDS2402009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc633271d437406988f4180605fd235425f3e4a350e20148ba6733887187b0502. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:49Z), 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/GXBDS2472144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f96525e7bc28c5d27c252f95dc0d60f25e1a6688a727bcc23a1627b92d25c33. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:20:36Z), 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/GXBDS2401461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ace11933451382770c3deca23a3127ac887350ccafffd9b9bfa3bf21ad9163. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:59:38Z), 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/GXBDS2482348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68822c18e0a218a02a6f721ec264967c28cd081ffb3fc1d8b3e4cead6fa5c59. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GXBDS2492464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7571770dd9e418d50d4b1f7155dc7a267d16c2685aa9710d7524cd3270805ac. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:02:42Z), 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/GXBDS2488358.