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 0x5449c3aa24f97636b12e7e5b4be9e8bd5c476d2a6d1fab8037645067e52d66e7. 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/36df2d99-de32-4256-ab02-69a24fb7fe45.json and https://artists.proofprofile.net/proofs/artist/36df2d99-de32-4256-ab02-69a24fb7fe45.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 0x1c342e816eec02b5649f58a8cb0f03ce580fd329ec40a243530896bf7e1432d7. 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/SE6SA2425637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245a083affd1ab5cb5cced470df367c9f8e1490c8ec2f45196c3b8f0a748d464. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:24:20Z), 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/SE6SA2425638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda638ada1c5b4f4d4e559743c58a51930388bf6e0fa6671ee0b813a119ca6906. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:32:51Z), 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/SE6SA2425639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f0a7e4eb7526a27c9ce4978e756534def1ed12b5b8152ff9b94598036ffbaa. 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/SE6SA2425640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a406edcdd512ab0d59c8db4394f504cd41fb3f3cb41fa82c9a7e1d813726f0. 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/SE6SA2425642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cabf564d727b2904aa3d52f266657b043c263557b64828eaf7a6b4f23b30ec2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6SA2425643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6c95c7dddc52d31d1cc25c5fae1a02083849857b6620d32e9bf61e94b0003b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:28:08Z), 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/SE6SA2425644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d8f9786d8d07a2638b15eaf695730fbcca96d3d5a009d460f3ae5c3bfbce25. 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/SE6SA2425645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde639013f89ee4f3aff12c182847b4acbb790728f5c0360e26bee65c064f2ff4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE6SA2425646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be29e8ea42fdfec2d7e389586ab98b01b958db970f56b6c0a61e7654b8788a9. 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/ATBK71201266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b96712a12a3a50f19508bc38487094b207e3c50dc3a603beadf0cdf7212126c. 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/ATBK71201267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd1813273d513253b38b6bb70d520b49d4a67643888c8db26a52a68ca0021c9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:26Z), 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/ATBK71201269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cdf955bfa31250543739c2113035766ec734b26c4ebf7bdad4b9d19a816cd6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:40:44Z), 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/ATBK71201270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb587bfa2bf399f42a9bf66119b450e58d2e9ef84e0815eed1e18005f546794a7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:10:13Z), 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/ATBK71201271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82aba96f9ae57a34b091f6b9da24414c9fd29034aa7f3da791fef41ae546cc9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ATBK71201272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441552c3b0521c15b41f4f37678ec7f0643a281e4151b10f0ac996f975a90dbc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ATBK71201273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0213fbf8910f0fe77045233491b166685ae984462212e2882d89581854a5b7e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ATBK71201274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229bd0cb221f539e5ee7c8cbc63b000a498aea99e02c8047150170d3b54cbb89. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ATBK71201275.