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 0x0007b300899566e8b78eb77a9ac2df39b799a057aefe269f887f5a417c79d5c5. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6a5b4be-5ec4-4769-9ed5-c4a187ef5bd2.json and https://artists.proofprofile.net/proofs/artist/f6a5b4be-5ec4-4769-9ed5-c4a187ef5bd2.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 0xc50a8aa3fc6de748a25e396a4493d49795f648b84f30243f330667c904401819. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:52:35Z), 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/QZWV32575616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a2dd2da47e565646bb1ddb526275acd3bc455790caf87c4632e5a2f003292. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:37:29Z), 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/QZWV32575595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680e7daeb125cc5dff0e5ca9d5d254a403a2d0fbeb44305575d4ea054bfe86ad. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZWV32575574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5350920513e8c4f0a33ffe223c8fc2d637b982d20e1de44964ab454b1ebda. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWV32575584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb6f55e61076bf19dfbd6c499c16f20e39df2f2ce9d8de606e0cfccb0a2429. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:03:53Z), 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/QZWV32575628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb0f6c49227822f3af7c1758e6341dd43d370c1b650eaa74b4f62ad253c3a73. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:48:00Z), 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/QZWV32575637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b60ec9ddd90722f910d84e710416125c05b7b59edc56ae216ad04ae7844447. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:14Z), 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/QZWV32575492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deb9d02b0c2d4b12532d08e3dd17f21f03830d5916072feff24df1710eeff7d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZWV32575626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903bb1e6c590145e4e09eab39439f9369fa97899c451b4e5c295dbe812174caa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWV32575603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a83db8fc3e75ef7c3b3c2dd54235dd03895d8547afef7b826b7e3726980ee8. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:27:19Z), 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/QZWV32575625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990d48027bb90f544fe0690815176e01647aa02388ce3bf6ba71b0aa1da64327. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWV32575609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57be4bf45eefc38f9696ad4a5be9bb2d1987180b953043b4ad033614c2318ec. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:38:07Z), 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/QZWV32575631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00300997e1d28859f491ae64ab28bdc75a6e1ad89244b6a938906864b0e14ddf. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:53Z), 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/QZWV32575605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467ac3e78deaad6e7e4cfb21a141f3c5211a444ee85d48b7bb26b9631ae60260. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:22:24Z), 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/QZWV32575613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc527222db8eac00e7f37e8ec56cc27c474e41867644f454aea627e4d93e6e1. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:05:41Z), 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/QZWV32575573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f35da0a649f8e31c3d071c25cdff2135a95a431277aa2d96caa89ec5ce7b3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWV32575577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaee831f5e269fcc9266bb4f9f67d71cfbd025777c8e6f2e2f2d9a6c33916e5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWV32575590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12179c9027a125cad3f33331e93df323c1d2f1c43bedd754edec99c77ccf5e6f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWV32575569.