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 0x54fd1470a222cb6cf7c75b1c9bc8d30f855d90276ab97b2fe1d96040c6b97d8e. 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/554bfed1-c033-4445-b353-4d1a00bd1ce4.json and https://artists.proofprofile.net/proofs/artist/554bfed1-c033-4445-b353-4d1a00bd1ce4.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 0x15d5382ecab2311528406cf82a86d4306041604172c77880b099cfee0e4534f5. 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/PLF242208888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac88692d5af6354d77f35c829261694267db14b52ce28721c500a7c14aecd5ca. 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/PLF242209062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd020426233e15d9b889011af9d7d53300eb1f50d2085c7dd4de5d49e833262a. 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/PLF242209063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bc39b943828e890fd0d11e170d88af1d599f3ebce985e56f5026398033e545. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PLF242209064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19296267a855c45d21033d91b839854c8ae4b1a4291b7aeb1c5366d1eb33dd7d. 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/PLF242209065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3386637102e625058f6a14015079db5b7a78cb249fa5422915f19a174608a4fe. 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/PLF242209066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459707dfd2bb60beb50ae1f38f554f28bf3cd192fdb2f2394428a5521f4ff865. 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/PLF242209067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a161964f3fcc46bdb60fd1efec53e7a71ef5043c9937046d097cbeeac3a22. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:45Z), 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/PLF242209068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1c482bb108f3a840c28d374cf0c3b0e1d1a881921abfec5c3d84e9f3da48d4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/PLF242209069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f85db26f1866e85f045d2e19c6b3731b86b273886ce8c10485e259d837e8951. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:34Z), 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/PLF242209070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6315c3b0bd161121213bccd3b9a5b9ca21f941580dffe6541f8fff1f933853bb. 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/PLF242209049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d6f23adf98abaca8ad7852484550cf43487e644e4485df486ed3d54ca9b283. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/PLF242413434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d41301f2576e34fd47c7c0b6810018b8d9608b03c817fa56af9863a5b0439ae. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLF242413605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddbd09be8597863b9909d7ff44945035db760c73ee28c2b6c1eff9347c2cb25. 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/PLF242413890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736c26c9d5afdd445df025dba19c5272a8a0b6bdc2c0bc118682b057ef510147. 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/PLF242413973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e1bc17989e9f1a4050a12a09e8a506ce2b83c6df70fe986ca52bf32b35fc96. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:28Z), 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/PLF242211279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990783553003813f09890388e130c7290df94d9b904a439c7ba0b74b2f9593eb. 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/PLF242211475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d41301f2576e34fd47c7c0b6810018b8d9608b03c817fa56af9863a5b0439ae. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PLF242413605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf5722527cbdb30413cdba29363d90ec4ee482853d7e19979e3e2015204a3eb. 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/PLF242413974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f544f25b375c1cf44e770092af2487ff6368800358f26eae5361caf37df80. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/PLF242413975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddbd09be8597863b9909d7ff44945035db760c73ee28c2b6c1eff9347c2cb25. 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/PLF242413890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a8a849f4af381e6b522ad956323a2e6f1121444d3190ed1cbffccd440af99a. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/PLF242413978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d7f9cd1f4022ec4ce9a9a95739eb0e774ab40921d8c6d7c7bb93c6f96f00d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:58Z), 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/PLF242413979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d6f23adf98abaca8ad7852484550cf43487e644e4485df486ed3d54ca9b283. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PLF242413434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287fe3bad074a38a3db231f6786b046fc0512e45cae3fb064439a1b74d17b09c. 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/PLF242413980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7248c4c8635b1bd21eaa678f4eed16181eb3fd448064b282aea6b8c9b28cac. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:16:55Z), 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/PLF242413981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb77f1ff9aa78f6b34313b79a8b908fccc128f5e27d484b4f3f568ab416e9f1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/PLF242413982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c775baaa282858667480ce476fd8b8e45f588f345001dea1e6010b662cdd8fb. 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/PLF242209824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518b5d1069497a9207e4f8cf80b9bf8ef6321cba5871605dc75d55cc97eb0863. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLF242108773.