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 0x5e5f053d5c69b2752f157b51aab0c557bca89c0cf3da4181d5ae61126430bba6. 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/bb52affa-7542-4095-b84a-d156cf3fe4b5.json and https://artists.proofprofile.net/proofs/artist/bb52affa-7542-4095-b84a-d156cf3fe4b5.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 0x9825a31b814748a73c9d09078dbf95adede903a7fe035e973c55e3ef1e01bf7d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:31Z), 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/SE5Q52003598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1323f89460354e235336b469a46739ec6c98622fc33811e17d34605f9385660. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SE5Q52200548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad80b42cf880dcdd507159dc8da8168852885e64523a4beb349af48c2de568b1. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:07Z), 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/SE5Q52201396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d7f22f464c89ad142bdf3bca1fb9690fadeaeb5d52dba1885c2f4e1a74fecc. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/SE5Q52202405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266bf0a93dabbf476e7370ece6c1379d8d6b3319c6050e600faac2490d1d9824. 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/SE5Q52202782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0136fa9c9356c7e16046c3ab3a8457ebadf0d2407c45abc73858ba6561582676. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:40Z), 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/SE5Q52301656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b40e64f6e42ee25dd25e6348e86577f3a56ac0708a9681a4bb2fcc2f69bf6f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE5Q52301783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9107ef07a31391dfa7ef6090a73a7ac4185ebec421e2c04ce2120a31954624bb. 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/SE5Q52302551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a87dd54290fbd1abf998a2687907b2481f2343a203b01f68f15d990c7ab5423. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE5Q52304411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6507e43736464719a680908e553e0405ac4ba227d3068dcbfcfe1c600920ee2d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:52Z), 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/SE5Q52304378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128a2d7512b8a1b46cdd36e277f54b73e13bc0a25f4b8357216fdf96201572b0. 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/SE5Q52400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1794df7c9b0fe801e4629a07c82527441d7a5749c5ec98fde2b84af69450b34e. 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/SE5Q52304830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beb3021978c810b0a2cee1c8501c27e9c19650072a6ce8c9273f77401dc6702. 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/SE5Q52400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a2c74b8cca1b0fd08058430391bc8a130a2e98ddce72cc84ee49c4114eb8ab. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SE5Q52304946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca1aaf1080f8a3737780f20bbdc0878cfff5fb1a0caa45af957179661f3bbf8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/SE5Q52400673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781cdba1bc98b4475734e20fe73827e473db3f35079d1d47cc6f55bec4624467. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE5Q52401380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd667c112d5b7e47bdba89378a1ed724c27ae9aaee90444e907bbca792a4bdc. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE5Q52402112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d335df98fbc597c758fa500c65b63640843387042d5bbe768d25427ad7d9f7. 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/SE5Q52402494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa290fe87e99523a5da1f3b1fe40edf13486aeaa0f66d1c43dc60415f2d13913a. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:49:30Z), 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/SE5Q52402495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e4244ac1fde4f05cdd78b9b86296bfe7c5806779acb602391aaec4761c1471. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SE5Q52403931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b26204d688bc9ebdbaa305896e515b215d09baa231e302e768d5e438885119f. 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/SE5Q52403907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4725d950021dc6b869f67e5695f80fdcda4e82e54a1d49cd7bab5ee91633bd1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE5Q52500525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b90a945135e149542a1a950f39a1e0e0f5b420e4d55f82aaebebdd2749b7c0. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/SE5Q52501228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f962f2213d4dc4cfe95415e26871275a4d20ed562dceed9131a40e3c6aa56. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:42:47Z), 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/SE5Q52501449.