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 0x09a29b64882e156d3e1ee6702adac3776f262de0c8f2b778a74bda2becfba0ad. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa606ee6-286f-4270-9b6e-e7c828e88724.json and https://artists.proofprofile.net/proofs/artist/fa606ee6-286f-4270-9b6e-e7c828e88724.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 0x6baa8d012a4694e7c168a1f3773a015431121b2ce330f6bdc655ba94c102c0bb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JP92N2307265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a886ca8fcdcc9b90ea293b494010fea4f9585998ac51a95a6ef2e92aca0474a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPB602302494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f686d4bca1efd9977cec2a85a55d2eb8bb391bd1be0667ac4f91fd0149bb5a. 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/JP92N2342442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19af1364307162acaa6537d0c0973ce9b0ada7e684fc82ad7c28056e07c33ff2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JP92N2356423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f686d4bca1efd9977cec2a85a55d2eb8bb391bd1be0667ac4f91fd0149bb5a. 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/JP92N2342442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bf92480df908e778874d7c8f0078b092a72b169ab46085d781dd43aa221163. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/JP92N2383479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a68207e19222e76ff721cd9c36cda93fa33df649be96f9d3e3b9ae7761e077. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/JPB602401131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67be2206d9166ca695efe8eafdcbfe79966678da998a38ae81882476691bfa0c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPB602401128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e5d605fb65466c86502a125d66abce330c7bf87dfba8142a04f90b68ab6f18. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPB602502691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f54a3c36e661ae79a4c404dc6b19ddb541a1583b95c75326419a435bda2be9. 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/JPB602502701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c7a56bb48e515f06bebd3712a837d1f5cd50d0dd85d0d1ff77d3bb2f6be153. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPB602501679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf065f9c00d7848e84a56c978ff3880c833ca97e8e1442de7e86466dde4c8b30. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPB602502980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd845394421b87184f4f5bb8f0a9dc2d450d8c94e90dd8bf3254e74438fff8ee. 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/JPB602503090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7579580bd660a0aefff76e96bb084f43dd8ae598cdff0007989430bb9910dfd9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:13:54Z), 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/JPB602503091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846f8a54489ccf9267a05509a0ef15755e87c47b7c884649e2602b9cb689b9cd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPB602502110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e5d605fb65466c86502a125d66abce330c7bf87dfba8142a04f90b68ab6f18. 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/JPB602502691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9476b8e6c0c85d31e770953d3e020ce59a8aeb9a8f95c4a87a5b29ae1040cfe0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:24:06Z), 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/JPB602503092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b88426a59fe9dd4abc1dd6f47c61f2270b933d0041c000d94d8b51a5d180b9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPB602502981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4c09cfbf180ea77787cda43f5e2987ba3bb59aed8bbf5be766e9df0dd6a91f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:28Z), 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/JPB602503093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc408705d237fc5581267984b96a0efed0a8997fa61f849dff1cad21e30029122. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:04Z), 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/JPB602503094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b4cfce83986da17d1e676b96f8e5232939349a68d73e8ff98f04656c7c59ca. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:23:55Z), 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/JPB602503095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c73c22642a3350a3366e70b4998845afc2b2f4ce86d82be2ef311b8b07e779. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPB602503096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ece72279f6739373a2fdc1a548343df92ccd5bc6574da88334aee835410d4. 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/JPB602503097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be72d5d2b1fda2bf65c6d0f0527f60f9f33a0dc691579560d91a2102b1102b0. 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/JPB602502982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccd0ee176ae4bf8670f47b1dd5a7264dfe82ddead7f6ae45289775b5bd66a68. 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/JPB602502983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16649c532f46cdfbb8841f69f9e3f90c483337182a1b8eb1f8a631cf1547995. 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/JPB602503098.