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 0x37061382f23c12f8f06732fd1158042da14782dccf1cf00840bdc743f37e4a06. 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/4d55c421-7259-4596-8784-78042dae8076.json and https://artists.proofprofile.net/proofs/artist/4d55c421-7259-4596-8784-78042dae8076.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 0xeec6c10c91f4015372124f440af805e8c928a4c452e33d7b18a17372a8119793. 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/TCAIH2451820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4508b16983d620ceb6261d88203a26ddcee16ad3a5b1431addeb3ced2169de. 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/TCAIH2451823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd065df7eb9e2ce3dc1a0455d8980c0a4c0ef8e63f5af44ca505b37f445468ddd. 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/TCAIG2451827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8406879e0f8d45f2a93bbfb57d910036b82b398979765b66c9d6003b2f5e2130. 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/TCAIG2451830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168cd23b3716048798eac23919bb071cc7eda54e2332faafaec72b05700eb08. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAIG2451832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bc912b9f81ac034ba710a587755c018265c51d0790257b24af5a5c20bb9ad1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:49Z), 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/TCAIH2451729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9350f5cc7b6aad5b14132ddbdea20ec44a4724e944a71dde4f10de611cf373c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:07Z), 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/TCAIH2451732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0693d6aadf86b7c6a0a470ef75dd122fe3bbb10f78d0f839597f4f531a71e674. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAIG2451737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c48372735afe5778a5eff6b400b5449078873781526797b14cd264adcffc99. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIG2451743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f1b39007aec9a352a431afe79c7b784c53adab7b702bce3e8cc099f8ce79df. 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/TCAIG2451754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0c007b7e06ba56c3270bda7a49d4b127416f4ae62752405be56a41ccd03470. 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/TCAIH2451866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f76ca5934652ba88259d23a4e161806231e3ab34ad76d2bb3891583621c0e5. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAIG2451868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cd3ff72134012b6de6d3648183a97e1faf9db377ca6f1bacee7b376a838535. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIG2451869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1750828fc9de487adf35185af911789689384cf9b8552909b7fce71f2e9297e9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAIG2451871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9422710fa9876c44f130723b51588234bc20c5a7cd7803f51e644267bcabe8a. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCAIG2451874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6348017a26a23b224d4c5782d8282222780ea3abaaac83ae04a0debf21fd056f. 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/TCAIG2451875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde09f4404dca707f80e6c442f336eeef3933b7df4d8a3427baa04b7ed5274df4. 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/TCAJH2500874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1f755baab455978ae83aace7e4793f35ade0bb902443542923d1787d18af3c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJH2500878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94334ea096886cf12c0a8f340f5c4fdb27d49c83f154d335287a92095096ed5f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:45Z), 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/TCAJH2500882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebba92ab3817a54c7cfe1dfb167ac6d2cfc9cc3c60226d254caf80800813c42. 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/TCAJH2500887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698684f6b081bbc700c28edc4b0fac47feb9d52ba29816b77279b4c58cd38cfe. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAJH2500891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff32929b1b5607176174a2dcd341a1ed66ca842ffa4dd22055c24bceb79b101. 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/TCAJH2500900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30580c6c784534018b12277936aa23d99c078b89966b442fe44a0fd91c00d40e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJH2500904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32993651f59587c637698489d14f9df9dfcbca30c48db038c7d1154e2ad6c1d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJH2500906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26f98166be577ecd8e770bad27dddfe400e938ec28c9d9cc26a420d3842ab27. 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/TCAJH2500910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b695dc7191e456b3088523fb393003cb96063c2e2c5a01135741e1b86710f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAJH2500914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f4bfd478853a459e995ceae70b3d60cfb9119a887b9658f1ebec1741d9a141. 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/TCAJH2500919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b85c04185d244f742e53847c8dc4e81fdd7dc73f1730d89c37c90166eeb508. 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/TCAJH2500927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47bfaadbbc183109d166abbc138427b4889f879a7a2f613606ac2860f28b6ab. 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/TCAJH2500933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48473722cdc75bd273bb567cbcd217c26c67986637eb843a902278b08374fe90. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJH2500941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebfed34f7ab3e3a9c5da3ebfd4055c2b10fed16adf939a041e1e93acc11e34b. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCAJH2500950.