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 0xe6f2cd28103e29aeebb1b8ebd7161ebf52c422299222ddfa8b07f7c91e9253b0. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58566133-9c90-4882-823e-0e12ace2c5c8.json and https://artists.proofprofile.net/proofs/artist/58566133-9c90-4882-823e-0e12ace2c5c8.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 0x9691cafa528a9b8efff2ddd385e51dce06513b30076569927dbb2078b28bc6a7. 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/USDHM2400496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7ca79d0b21a0a93f5475784f5ae0862b664fdc5f53de847725e78c94de6ded. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:37Z), 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/USDHM2400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66127c2e01b406dcc7605959f1935dae9bb8f74f9480ee452fede4c16c3ce109. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USDHM2400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78eda6d8f597a016808451bc58108217a7f98a9c387279ee0f46c7642035d8ed. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDHM2400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1027041303d14734e001bcfca3911b1cda84c8b5227fd3e0ffcb8f92c1a5544f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:04:51Z), 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/USDHM2400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa882890535c9cc83f749db8d4568229e729a425dcd3c2dd0d159763485bbb. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USDHM2400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c718aee5df55d210402344ca150cf33e97fe3d45f15cc7c42d5161becf2538f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:25Z), 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/USDHM2400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b77e02ea6b100f11b58839f502aafa42e20e1321ea17bd5fc7c82f9df288e7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDHM2400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad08ef6d2f272f16b5efcc529f086981ca0b3447657180040e955e5136650f6. 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/USDHM2400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001ccc219f00284c64ed0e334e31958debff908c934534aa34b1b139c6ab3950. 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/USDHM2400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc6b7a26f693ca63b9005928445e58f7bd47a51da6b393960dd6856a96c702b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:18:33Z), 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/USDHM2400744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d616d5c28ac0bf89425d00fa8b8ae146f215f18d7213aac8c59f97d3572e2d. 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/USDHM2400751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8480ae401a24694377765b057f94e4c7a5916c2da98905798b04285817317ad8. 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/USDHM2400754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f723a57fe3c2a9df2ff1e509291abc82db0b0c8846a6d84106b7d6ca5076ae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USDHM2400756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e49cc77839142657ce0a9faa48d68b39ee44161c171678736b064f3ce2d80e. 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/USDHM2400758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b32b4dd6f041d9b90fe914861a6fd9bbd151117b4805bb142de74973fc44b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USDHM2400760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d31d908945a760f396bd6c9a983d749b50d2a83c4be53bd59b26e42da84448. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:01:09Z), 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/USDHM2400762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a9f97dc30f4aa91a3810ec9bd8c296856042afe14a05d554ea1917d664f681. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USDHM2408946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90db699d85a20d9637e290545ecb4ec7130902b6529963379c05013e20533295. 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/USDHM2408947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70960c02fdd60960771e59547db36e8cfe4affa2095d508920b4cbd97ed1c4f8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDHM2408948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20fc80a4ddf60429fcb794ba18c4c9bfd5f60618bfdf91962a5b28a065092b4. 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/USDHM2408949.