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 0x0697bf4a9758f664b053d38004e5adc1ad5c34069addfc323ee885906986c94e. 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/335f9a3b-d706-4250-ad7e-8fa797afb53c.json and https://artists.proofprofile.net/proofs/artist/335f9a3b-d706-4250-ad7e-8fa797afb53c.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 0x8aba1010b6400448b78949182a0b4fef3d31c27a7578b81a1527652f1eced7de. 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/QZHN82484129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a8e92f9f121b9556806cf809e79962ebbc260f82b06635afa485bc5ad11019. 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/QZK6P2443091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2083f3c17a07665d4635e40f0fef07491486f59c0cff7b39e7169a2000b4da11. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZK6P2430399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b206b721c19608f58dd219193d1628ac9f9c62cbc6abfdbad3fa169ad78966c. 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/QZK6P2430418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662467d7b58177b884107fac3e10f4794bced2078d3f737b8cd0763ab8af72d8. 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/QZHN82484130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0b651792569415ef450bb5c8faa0661d0096009371fa1ef44faab5814642c6. 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/QZK6P2420156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa736a51eef0073326856d978b493002c19c1194af5a14fbfbf56df221deb1726. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:59Z), 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/QZK6P2432135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7c96be3030039cdf5eb6857e75c28b8f7fc2714bc309f6e5fbed23891204eb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:33Z), 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/QZK6P2425532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271fd6f264cd2bf2a46bc2cb0d25e3d299e7aa4dd6d39a48a034c46175c904a1. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZK6P2431240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3361efa621c3a1fa777bfd1753494b3694aeef65986e8324248d27092d63bc48. 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/QZK6P2430414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b581131ee78b5cf9b648d37589b1ec477fbdaee450312b700375e257bb5524a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6P2426185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373bddcc868b34183a7b5a18b2c5e4b4ec8a4de42d3e3a5dc22a97ea9b92efdc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:49Z), 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/QZK6P2430402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f0dbe810f433fa952fb0b52b3b8e232ec7b8a32a96c52fc5f757f1bdcdd2ed. 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/QZK6P2432099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2394e732b0851ecc8bd94aadb8e718fe563a76657ec06b19a453db942b0cfa28. 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/QZK6P2432121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100d7d8efe99527d672da0be9a46f3aa60cfae67d66bcb6bb52a25b1c9da4a2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZK6P2432101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ff217b418031935875c8ad9ebd993998025b149e7488cec116c6997104fc7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:38Z), 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/QZK6P2426532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5001bd1b3904e5408072baf54f8ec661585f2bfc5c0cc05f722a95a4033a3e02. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZMER2237486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b3a4c7feb701940d9231468b88ba8ff42328e0c8d1f03b4441639a8bb60635. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTBE2300744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba723b6c49544f0a215d359c319671d19a3512b28dc9384ce2912fc3376ccebb. 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/QZK6P2430421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281e963b51ca2fabce01b2df2db59d342a9460c3c509379546aa310094b7137. 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/QZK6P2420572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3f48b7d717a3e4290147101b062d8c2217036feba935032d9cc78c141b4310. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTBE2300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe668a17bbd22885af4e837dfedf9b646d12c161673fee0afdf54ebece782fe26. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6P2425401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217ea57573107dcff885c9000aee0092e46ad9d131ecbb9af9b9ed8c79cb8fdb. 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/QZES62495003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceb841f9bf26966c6bfa3f3efedf7d56192589f6ea20919ae535c59a5dd63ce. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZFZ62503512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624d88a9b92d099299b49285924271940b47ff512dd4f27616e7d0e7f5d3c6f7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNWZ2578334.