1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd27da341eb35af172ae0d86fc4c0d5030b00b5a902babd61f7138df5807de622. 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/d35ec12b-2757-4ef5-a8e8-c6df25b1fc89.json and https://artists.proofprofile.net/proofs/artist/d35ec12b-2757-4ef5-a8e8-c6df25b1fc89.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 → block OTSBitcoinBlock must exist at that height 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 0x5291f44fa1470f29f209ab439d5ec93253ab3f412f743f78d0e40c7e69bf4375. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:14Z), 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/ES6119755205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca19e7cd209f55976bd6e3523012c35792a88111b82b71550bcbc962326d6aaf. 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/ES6119755209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8306e4ec60be59fb19040c4e8c53a85f076af8882b93e6c365f09a7796749e44. 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/ES6119956704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e721bac9cf1af56568b88da0698d7efa3dbc6625bf7c2ada1c88cea0c19fc3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES6119956706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5773705a42c4f22c87ccfcf1ec1d5a6864f665748887e11087246c0031a29a0c. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ES6119956709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61048aa07946731008593503fc9c1c0687975d7097cffd943951144b657c958e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:25Z), 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/ES6119956710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018109f89baca7ba3e2222a6d2a9b599e4a22273ef659a82ca926b7351c1ceec. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES6119956711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1693cbb55bdf3b6bc865aa30722b4b9e38e998843c07a696cea362c5ca29cf. 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/ES6110159604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8757e29af96328ee04647e1cf63379221807844ee7b16e6bee1847578a484b4c. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ES6110159608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68834d0bd3c7b61b19fb2b4be88932539f94318556d7a3ba98a4ebff4541273b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:28Z), 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/ES6110159609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5d6fbf79364172adbe8077a4927ab27477db5cd64b6ea6581fdee4d3eb15ea. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ES6110159613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e9e50d8b1dfaedd15748b0cafb843eec15a275e1150bbf00eb521531a2c12. 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/ES6110159614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c0634833134e147ba2be226780a1c51ca1510f440b4b51adca7a9f786b93ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:57Z), 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/ES6080362002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ac28545acf3590a109b48c009d9a51189fbde65edcdc6da9c637010f980113. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:38Z), 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/ES6080362006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69915b80b542c1a7ec0940613f70297ff12c1b0c352891fe9755c026fa2fb09. 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/ES6080362007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a903523c609bd41f3c669016abbc5ac3e0fef496c46d1a27d9b40632b427c5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES6080362009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789f384a93c60b6a88abbbcf8b01d927daca15a13483fe1a25208ff1eb915cd1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES6080362012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a24019f1f149305546ddbb94d1ee4f891160d80fbe504a48bd4819cdfe2df5f. 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/ES6080362013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ff8e207aaaebe77c3d634b8b046da2e6ccfe9f3239b181edfcbc99658b4832. 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/ES6119956701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a16cb0ca2e02b3c0caf8cffe40e8979b138a73f0926b0f466511cc55d77282. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ES6119956705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeb06f4a8689747cf8ce8a54c603ca03589518fdca4b2fa2938f3b6c69fb94a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES6119956702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd494387b55f37b71127ee46dc8479aad6e2018108763a78c6fcfd7c00691c4a3. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES6119956712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe410f4d233868ff43fa931b95783072abf143f0a73f171adde6a8dc62f948950. 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/ES6119956703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3474eba2f34b39dc2060f21a8c7e0eaea65582e07964b0249b18a1f66f131e87. 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/ES6110159607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab02b41a9b9eadc29c481fd84de1234af822b4a511ad5fdba3bc9a6b197a79. 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/ES6110159611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73294c0a6b38789dbe6294a4d0d4ed0ea0e516258d94ccc0ac3d2914b2ec749. 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/ES8240830101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec983b6e317e037381913556470a997af58fb671bec3870bdeef53c1034a4ae. 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/ES8240830122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e225034adbb37e50a09950c819815451829aed43ed560c0840a5eb0597efba. 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/ES8240830123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa5ca02fad9a7252327977896820751e54fac14a3b5ed3854b4c12be338ad60. 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/ES8240830110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a412042bf0995f52974e71a3f6e0f6db7aff8e062b3afc7c3c4273ed83b34d8. 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/ES8240830124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577022cb0d5219439fdbbd74f76a4a59eddd53a0fb3c571c21b61ecdd85afe5d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:35Z), 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/ES8240830111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ad439e1bc14193344d8f794df370279b29d26a72d6b041ebb15aeef264a55. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES8240830126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04a74cebc96f3651dfc0e546008ea8219311033361f0ef0c573557a436f3ba9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES8240830113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de8bf1461b85acf9e728e6aac810d75654ec0f49fb7e338d6c96a1f638a1c04. 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/ES8240830127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb82f547e1c1460d4f3ff7570824a5d46a3f14654eb37d4c8e835099856f5e4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ES6080563007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7dc468e3910d473b32a9fba53161f2f75eb82975b1f149147d8c605e9520cb. 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/ES6080563008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431ab74b7f2050781ea8a9782dd5ead1fe2f3996a7572ee37491c6bb110ac8f5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES6080563009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8956d523ac0a66353c3f290f46b3e095fad77b803dd1addba9c0d66cb0d96672. 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/ES6080563011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052729f5e21ed64da9b54cf8a09b677d744a065ef179ca84ad0b3e35a0dfb952. 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/ES6080563012.