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 0xc1f455be27be2366daf181cc11f6b2d8884e1733ba0fa267c6d4de69f05abde1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac3a3355-9cd4-4cad-a358-904843c44586.json and https://artists.proofprofile.net/proofs/artist/ac3a3355-9cd4-4cad-a358-904843c44586.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 0x7e569beaa354fbd59bc9bc2239dbe428a8aa1b5e5e149334708babdfbe8230c9. 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/QZPLS2461068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005ec5cf6022c3dca7fc0cbf2a1f4f4a3d247431164d8f1b1f6eaf28baf4c59c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:16Z), 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/QZPLS2461054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3051fdafeae0b0bfaa9739fd40c1158e6aaf7e11b74fa1c75d4596c75b502f0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:18:42Z), 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/QZPLS2461062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba62f78095786221d7856e32c038e6f479f38383a1989b7e54cfa27b58243904. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:31:58Z), 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/QZPLS2461060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faa3551daac8e34161e793f791e9950b0b97e346defe3d3584f796a69bf96af. 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/QZPLS2461055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dba3bf4c11250a347256e3361ff607de00696d3c63b2e1a34748914085c0d1. 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/QZPLS2461049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744ad8dbc5dc1f3753ed8620239200ab1ede4b89abf2b07e128d76894f7e85ad. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:06:47Z), 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/QZPLS2461053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b08997e12f1bbed446009dd1805c9d7a082ea9f0f1f19e7098604dd70ddaf5f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZPLS2461048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51092170d9e829ae725b3b22808f6582443715a7d5efc7f12116d13d32e0bb0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:23Z), 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/QZPLS2461044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7d60df6f3cf20b8628d49af1f5f3cd3755ac0d8190c6123cffe4b7b3ceaf5a. 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/QZPLS2461046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc75ca7386244af183bf094d022da8bbb2c0f0332679801d3962c3909856e6ce. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZRP42427994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d39d5229e83d2900fce2234c7a7064190430b2a203932136b784ec794170003. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZRP42421621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d646f26f1897cad007940501507edb187cf5feb6d795ab5ba4f256821eb202. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:47Z), 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/QZRP42421633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4ba4c2b02fdabe5eb0f17c4b026115e1127f61a556200610402d7fc7c423b6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:55Z), 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/QZRP42429077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005b0389cf4a99e484b5c0eb768a1337b9a055a2916e5da45cd219af0ce1941. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZRP42424597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde06de21ff120a30172c1be05904f72a6fcb92f3da81b79d01d34f10b3e7735d. 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/QZRP42426146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542b633cdf76562e74245e4d651ad8646e141236c00c20e2fb97f1a529893e15. 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/QZRP42421632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac9548c0a77af972eed086b04c4489d289583321168340fba78525ce4c4be5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:22Z), 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/QZRP42427982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da377613ba761db9ca69f3218c7be5ccfeca5ae6399a1a2aafefaadd985a64a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:50Z), 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/QZRP42424596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ec884636708eae8374e30c2af66bf27a10abbc44f82ed1257f83d3ea8e5213. 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/QZRP42429078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073b0b39b22354620661c36506c8371a9c4819c7caed6ff027ed3f5c06d5e9bd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:37Z), 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/QZRP42423234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc659c2ca600f9f979eee190e0c46c9f750bf30530accf39b5a961e942079db5. 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/QZRP42429080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86da3e676bff7c8572a6e50a3bc7b4f50999c0e9faa6f878048b324d9a0b7934. 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/QZRP42427993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d1de57e9e5d4424bb88f45b9de597e67f449681619375014b40afb39a8bb22. 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/QZRP42427983.