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 0x4ebfae253f40053a1d683ba23de5933c94a7554f71346d373676c8d0543800e2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7f93caa-de71-4055-b188-278902181f64.json and https://artists.proofprofile.net/proofs/artist/a7f93caa-de71-4055-b188-278902181f64.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 0xe0d1e6baeb0e64a7f56e2a9f12ab8b52106d9dff7aa17c80af082e022ae6d561. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZW9M2236364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1a3b94199d1c7da4ee300bdc97d2bd47174a35c757d76a4d4414770d1a9f2. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZW9M2236365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbbc4ae7935043f6b7340bea932f8dac7f7ef504cee2d99f7db4bda2ac64ac2. 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/QZW9M2236366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d2f5189233e1b80efbf1d4a02e177800aa05da62cf1d621fb7a712dd4f3d30. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZW9M2236367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e427e632b33ee50d6269eeebe2f346c3d940952cc0259476d2f12896eab2b. 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/QZW9M2236368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76520bd62c9cf9e7294c17aef8a760ddcc713e7b08fad858165689b0d17649e2. 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/QZW9M2236369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be8a4e0df13400765763b660fbf594fddd0e30af579123790c4758306a3dc8c. 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/QZGLM2313481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cb4420ed56ab7767edd31a0adc564bb3f6abc8a48b8ed8488312da6120d90a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZGLM2313482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca95aaae52d011a52deee00299d1d64c7751cca0f5686fe41420eaa623b72b1. 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/QZGLM2313488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cd44646a6c0a70e313a0b5ce92e013a615560cfac44887a5dd0379cefcc61c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZGLM2313490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec571509e51d7a4200952ec023e912a0c650026e637aaec7c0490c196e10bd1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZGLM2313491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b82ce227d0fd3695299960e58c7b8cdbfd353552133aec9546ed03f643a518. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZGLM2313493.
Tribuna Jurandiense - Tambor de Mina Mata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ec14db64a3a471d0efdd22bc4489e559f762e6e105f9c448d61d67a26a2f39. 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/QZW9L2388082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fba4da39a2ef7760aab58943362e7bd4a1076e028cf6f577346c937330845d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZW9L2388083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f7a9efc87eaacbbb9799b12cfccf00850dc008b0e1d6a4b2af8269f383cdcb. 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/QZW9L2388084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf774b7958cb857b6337affd90ee3762f5c2c01f42295414cb2a35d15caf5b82a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:40Z), 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/QZW9L2388085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad17f0a6b6763e5118383a9eb8287e5de77f2dee4c46dddd9ff7638c95bcd37. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZW9L2388086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226fac38872844d40535b7f674fe45f3a7540df2e24331270ee7cfaf024946a9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:45:35Z), 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/QZW9L2388087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff96f7ab58b78f516496199879bc6d081228422c661b8f72c3b51e48fec18e0e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZW9L2388088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cde7180f3e72347c76512b2fe0e23bf3462ac54e28e8b25ed283e7b04ada04. 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/QZW9L2388089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a1fc75a111f1a5b6577646fc98dd921f403ccac551f3567105004ef35b8a61. 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/QZW9L2388090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ad6e449737201a56cdadad8f5017e6e5b0cc3480e09a89342f80442edbc39c. 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/QZW9L2388091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea709cc59bf8043bcc011d428eb723123ba0f8f77f71302fc8fe959de5902ccd. 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/QZW9L2388092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f0734e20b85bf389deea5587720ac3885e495677722ce96d52f97fd3a9e09c. 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/QZW9L2388093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdf0e95fc6fc131b1a62d67cdea8955bfc48ad3904e7402f8ebfc1dd75a4cf3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZW9L2388095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdead0bf1324c9e7dbceca3f77ed89013b96099b585c6b38ed2a3047c4e9b4df. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:11Z), 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/QZW9L2388096.