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 0x69354d18ad6841334d54408be0c1decb9e4d77035bafefacabb8bead71f43907. 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/a40907e8-8099-4668-8f77-6f1c69ab4f62.json and https://artists.proofprofile.net/proofs/artist/a40907e8-8099-4668-8f77-6f1c69ab4f62.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 0x6dcd20d1d9e9f49ac03738a3721bb16fda605617b0211ce7ebc67b42af23d4aa. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US2391900338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1e3942c35d04b7b0a6fab60877bf8dfd5d2642ed8054586969eea8b1f6e94c. 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/USAM18900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe05a406aad0e6e9c84d59b8d990792b503ff2541582ebfb0353d678fee4a3d5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:53Z), 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/USAM18900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c589b055bb7a73a0802fd2592e02b0bee6b0feca8c94bad2ccd19a1d00e491a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:31:13Z), 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/USAM18900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59abe12e5feb339fb72f9e1d29baf11a190ff4b3a51909677110c7310bb82ab. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USAM18900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102e8b7150c6f2b41ffa77c6182ff2933ad383b9f2e8a3dc720865f81281a7fa. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USAM18900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc3106b962cb09a1272eb862bf15240afe1b2b1fde3c7b3e150a4c248be56b3. 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/USAM19100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d22591b76fe761b7fe2ed7ea696343dace8b7b0febdf0d2557fad3c18793167. 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/USAM19100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8119d955b2d3571a2177e60d80be52ab490d6167fa4d98a2af493c31bd29993c. 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/USAM19100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8480328fca3595d28077de7b3b66e6de6721e09f47a766bf4de8745de8f224. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:04Z), 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/USAM19100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda92c90950faae151efdca1b754dbc88f5c749083ee27fae0cf452192f4a29. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USAM19100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56656a49cf80c799e4dfbba24b90055bc43f5b4cee5119e3dad92a163c03d15f. 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/USAM19400235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c56574a36efce69dd3ee2b29b677f87a93a341499b94e4ea462fb43c1d6b2a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USAM19400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046dcb26b5300a1828546c76a627b0e2487deeed399f1c3a66b1de8f729ea89. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USAM19400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd80f3154741f4a8d96ae694c44479c597176da718b73d4bbb5225dc31d7c774. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USAM19400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0517f578c22664cb3adc20a85c7ed79d66e5acfa89c4874627bc85406497fef4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USAM19400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4fb30f2655c8a33d538e506e5985817f2906abb16237ed85c8b6962b367751. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:55:35Z), 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/USAM18900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc17416081f63551da0818ab4f0495ca0d11168c4f0cc91b5c29e1000390e18e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:58Z), 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/USA6B0507201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcba753c8e5c4bac7d629ade39d1c56699fdfda61213cba05626072a0ae37055. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USA6B0507203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db9134852f67a32f9d0c73430f7a319ebc4e45e6e768af7cfa8771ed38c993d. 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/US2392550196.