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 0x27a20d8eb5f28699b2b72bdbd1dc19883b939705dd5717c5e470e656e80166fa. 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/c61c0e61-6ec9-4cd1-ac5a-89cf886a610c.json and https://artists.proofprofile.net/proofs/artist/c61c0e61-6ec9-4cd1-ac5a-89cf886a610c.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 0xd7cd0cffac078024dc5864bdda408a44fb384f41215208b9818f040ece6cac3b. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FRZPA1905430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2b3616423e524581522d695b48e222d6c22046b05fa970882b0fe3eb23b7cc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:14:00Z), 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/FRZPA1905440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa02c20042af9b2437271c40d4b9a5b85d94a0f388f87b074f36f40f7a751cd2. 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/FRZPA1905460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d58d9c955079807fb1d7123acf23d009e1ff9e15310f7b40919e2e50bdac644. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:25:03Z), 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/FRZPA1905510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1f043a3648307ade51712cba1a421483fbe495dce038204595268ff21e6f1b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA5KR2002542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e9a891723294b1717232c2b850acbdee11d918b2e970f2d6622bd2a1f76b75. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:15Z), 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/CA5KR2153816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b809031d4133dd839c007a35f0cd467f531c30bf30be32af5ed2e695c48736. 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/CA5KR2153818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d2bc71e999f7bde10cb2ec99b406ea4f07b77caa140d1510e17ab1f47c0099. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:11:35Z), 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/CA5KR2153821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da10e92c98ba9130aaf9af8f7e037dbb233ad3eed580d1183431f9cf351d82. 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/CA5KR2198381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcfe1bc5e4d9dad83c6b8a65d37557fd8dbd681cf5051064805fc940928efd0. 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/CA5KR2198383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb41719a909b78a301b3fc397ca913526331065abd0b6cf6d8e1763e9f19999. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/CA5KR0038048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e3d18d932ea8967096e7d1610e35c56e2dedad0bece7fdcac5912bc905b77a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/CA5KR0038050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58aa249d9b43193c70a7e5088c20aa40b83ec148d92d22c5eb99b9355d26fc4. 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/CA5KR0038052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd99256f246850a427f29f4ab8ee32f93e0dff3643e5b760576ab75cadb52ecf. 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/CA5KR0038056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016c98871cc7deb8dbb0696401d3694dfa49a654c6ed73aa199c2cae0c1a2ec1. 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/CA5KR2281311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b10693c8824b2d8fe14de9083fe2f9eef00a9e5751f100f76d8dce98f87bdf. 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/CA5KR2322099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f5d4f28d5aea7d49d1be5abd0c6882e06a2f3dac5cdcc2953447d70c4dc1fc. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA5KR2322101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a729bca2c15244e8ef6ffdd74755cbbde472675475d28e2997cdbd9e3d6794. 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/CA5KR2390215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7e3c8d2092ea800b05380a498992092324c35125b05ff2c8a2929f370b1677. 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/CA5KR2390217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be5d71e9fa4e4f45deb2fc9095a8fff110e23850a829a29c62ba8bc3a90b84. 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/CA5KR2390219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4d1bb70909b03e4bc6262d81ce04606cdefa56dbba31cea5ddc899c155d483. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:15:57Z), 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/CA5KR2390220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f3f469ef8f57f04f521ac0526a89f39d13ec566ff60edb9105f1c5731e0e04. 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/CA5KR2500768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046dfe77a36b19d8a3ea66e9a53a21371ad1e8bf359791456e56749d283b2ca4. 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/CA5KR2500771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18378d015520ea1aec257d05430c3b8c06b9cc7612ae1af950fe6817a10a336c. 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/CA5KR2500772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938990f99abbf10d16677f13bf142136ce5c50eef47e7dcd915d6e42e1992a68. 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/CA5KR2500773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ab58107d88b5047079c115fa56a85b831ad05844fab60874c4a903be2c3df3. 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/CA5KR2500776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bdc5e8cecb03e9fb891dda26e33cef14a5dd494dd8c6d3016d210829880c32. 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/CA5KR2500797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0b84734956fe513f9017f359250b90a7e9786ce999bbfaec13907cd7cb277f. 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/CA5KR2500799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f688b47904f44219a96925f4834944810256e4071bf2c4f9925956fecb23a9. 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/CA5KR2500804.