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 0x61eb0c3adcbfb4d57797f956a7bd848dd06433939b89b3d4c6b09f967d32dc0b. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e67cf85-7b02-4320-9c98-f16482235da6.json and https://artists.proofprofile.net/proofs/artist/7e67cf85-7b02-4320-9c98-f16482235da6.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 0x858a8bd75cd76bafb8c25347ff57e776acce2295a6941f1d53a14c3fc3f2bdc2. 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/GBMA22465012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde6cb5c0a68a104c176a4236a96a61a0da30cf8447665bd915dd6dd38ca5190. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBMA22470565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee95c443b0ba30bab4488b801e4217f81edc1099b2d9849220902cec6d47dbe. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBMA22470560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911a80174f741a246aba4f31834885285a5c1c2ed6e984863e7b0725a9c5faf0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMA22470564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300bc28361a4e96fb505bf87d8a48666ed268a002aee509034675515f4ef299f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBMA22470562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8681da1f7f4c11045bd70c8f6462e243f8bb932f7eab9238a5cb2140df3561da. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:49Z), 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/GBMA22470561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722b9bbaf42d6b77c4933792e515af2865fc4aae3f1a31288037696cbd1297f0. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:08:39Z), 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/GBMA22395789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc089821ea461ca92eb99992405862e297365a82fb7ed218e68af8d7093e78e94. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:27Z), 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/GBMA22395787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a7e9108f86de087397351199ba2e81ae47b42742c970bac148c988476f9cd7. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBMA22395788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0eff8a966e67efbe552cb5569f69a075c2a866eddf850f6e42a7ef196d506c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:14Z), 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/GBMA22395790.