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 0x0e2e3f767e0acd4981d7071845e75a0c572ef85d90b1d7521a27d847c8853bb5. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/798947b8-6e7d-40b3-9931-8743ba7a07b6.json and https://artists.proofprofile.net/proofs/artist/798947b8-6e7d-40b3-9931-8743ba7a07b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rockin' da Island - The Big Island All-Star Band
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 0xda7e6df252bb6831bfa3322f0ba678c52b4f7593547865646816dcc3696a8a04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB631177905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c05e7599e135ed0283057db47e8f88e592f58b4b58927a35eeb15685bd37b66. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEB631177930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75217bae989749a69f049863fd535f3a77504635b8995070e10f1d474a0c4a0d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB631177934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc73abe68b62ada8e6587239e1e15408f3d831f8c35cc56b6529c3df4c360e94. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEB631177938.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1954a70e5d3aad73ef86cbe8eb93b63fc135273b0fda4b9135a957c1cf22d328. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USPMR1703344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc6538debf4615227bc132cb28499b130907833d16946e80ec2a9a3f12ff4e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USPMR1703345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c4c91921ddf2f7f08838d08330fabbec5fbcf125cfcb4bc0757a8ca50a168. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPMR1703346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73735d395b732865fc0a6e8dca295beffa644e108ee749ddcdf42afc1a4c841c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USPMR1703347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c882b7179944ff8f952c28dd080dea20ce48a148b2e4bc7e7e9999b071188c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USPMR1703351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a03fea08f2f5cd878c54654ff02e15c23feea8dc6964b5ff91839785daa5bc4. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:31Z), 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/USPMR1703349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa26d20bf2efc675ff1c6543c1e539a00914ba15f040b303f8b7f8d78588c43d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USPMR1703341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dde8a85330c8bbab2616a4a27865ab1c48ec966db357729299f1e5f4ab8fa8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USPMR1703342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10afb0c059b2a501913970510a43d81b6058658eed89fbcfdca6341d25a59253. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USPMR1703343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5992e5a56c5d1444bf7414ed922b50092d35cdc57b8c98da5c018ba436f835e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USPMR1703348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2304801f762c510ae4a3c0c709f6dc8efd56c52dcec9b5f8a408726abebdce4e. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USPMR1703350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d166ef574a1094050881dd0543856ffbc3d8c63ede38bb025a10f510e8178fa. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USPMR1703352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f9216a146c8d06b343906e82e3dc075c989a1161a31b28b281c468cb2513de. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USPMR1403316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110551a9b7cc3da8abe6c4ca8c56db98abbfc02dae78cecd38c7445f676a8052. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USPMR1403317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1349342dcb819dc1550c8ea9976e2f9fd5e8b727dfd1965c5c6bca1572a0632. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPMR1403318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8cb0275d52deec5fd8cd210dac154939ff7d305f68a7c7a0cdca03fbc1d2af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USPMR1403323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fe3aad37ade526db1289fa6458a11d6406ef60d610a5bc2ba1f570b06aea64. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USPMR1403325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f960c1aaa2ac0fca98be3c2655adf95f0606526929fc6c3a0bbb30c1af76e28. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USPMR1403327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44324d4a032d94aa6f79a192a95fc07e7efe93df7637f2dad5a7f552ee4a211c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USPMR1403319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b948100c255e986587e8aa81a48c24bc4938b3b5fcdef2f302695c6884035e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USPMR1403320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c673c7c29e5635acd6418fefbda3ee957252c97364d868425c1c1e9edb714cd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USPMR1403321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322ac7e5e7303258e0886e516db1c12c217af600928e42f3f4e28da61e54b447. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USPMR1403322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90d8eea1de31b3d4a3d20b5009aeb2288aff4cc5794dd3bf6f44d8206d990ee. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USPMR1403324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0692869896a065d2a2a887c115f30de2b4c2cb0d71392b3dc296ff4c5a84d1ed. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USPMR1403326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f91b7b7f1148044264b449724702718f63ff129481c7f70738b9e9becb482b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USVH41200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245efef12eec03b2ea4a6a06855ed593a751e12c3c78cf908617da97461b53c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USVH41600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7957321942a6f7f900f9ef928ca65716f63141de6f469e3b65b96143716193. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USVH41600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0c561c11f2243b6581f4740803963a5eb75151ae362e80be155dbb6b723c19. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USVH41600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d5e59ced36ca2893e7b2a50f0e25ea4a6cb1782d37ff9af406ca49466bb48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USVH41600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a89d56a9a1fde873ad052a611a1ef265f74e2bc4e54134593a4eab36d5b76. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVH41600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521f218316e7a5132796a25a17b6f7c0befa0c7aeebe9bb55d8115f07d8db16d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USVH41600009.