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 0x4ba9ab475ca3efb88f7b878424e8aec9da8765c40cb165f90c7ca1e73d80e713. 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/aa7a9add-42ba-469d-b339-d1ed897b86c0.json and https://artists.proofprofile.net/proofs/artist/aa7a9add-42ba-469d-b339-d1ed897b86c0.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 0x27ab37dd34742b6c3c5cbca54f80bdcd702114fd5e7bc81c338152c89b071542. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:41Z), 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/TCJPK2044484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2ca0e3e1f187fe14224ea56a956ff6933191b5f3e258d974a6f6f59a6ed4fb. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCJPK2094079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d739b5b9e94ca8a6b33525215ea796889203f1a6c30d9a6886babfd012304. 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/TCJPM2001091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64f5d0aa73f53f40941efc789e93f70ee8fafdf6904c50513011f10fc32d8f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCJPM2001096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb781ccc76d1e9fd5eda8ad12a35e2994424e11813ccda2ab716ee2229f2e5564. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCJPM2001114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6314b66ad0c51ddb1c375d625075ba1075c5636c2d6c8bddc5adb45c268e4fa7. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCJPN2018149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d038de6958d3afccc1fc6cba4b0882b629067bbdd7e28576903d70029e8fd0. 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/TCJPN2018158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414035ac9239bff5d3f5351825343664a9fc2f221a9784d6eabc93f7e53389fa. 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/TCJPO2176100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5637dd08e282a5dd65b3eeaacf844c4704834065214389be38464a224aee4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCJPP2106186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc501d035cd816f50cb3abc7f7a8b99a692a16c953dbef95bd2c6b7096d98caf3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:22:41Z), 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/TCJPP2106204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf884374d5ff8c6527b641f3f7c4a43dac8988ae393b88686c7d9cfda857752c4. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCJPR2210391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509b6cacd0a6af6f98bc5149f1c152308764a91bcac2d384877ca9b7aa32694f. 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/TCJPR2253481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63435ec12672f08ef4ef3a74637323d40e14ab3a02c082219c1291829e4aa805. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:45:57Z), 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/TCJPR2253488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b2be85946827155091d44f424f224a449fcb87a4e462f81c8e90a69694c36. 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/TCJPT2239987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce0c12361a075ceea8789ca1069746e4c1f948e9e92376270c115607a8ab1fe. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:39Z), 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/TCJPT2279381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55ec99125d50ac3aec7ea7af78cff04349fb56c2ee056efa7f8e7e092ac2912. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPX2353760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451964d8829e50f7b9c705aab1742c59fe24734550799bb3ebea69223130b158. 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/TCJPX2353770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86494613f85333b286f469032128c72997924b0caafd570b6dbea9b4934449ec. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPWP02401726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf24738fd44c81303b0609654c711ba7143e42148182d9a0256c7eceb6e20825. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:40Z), 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/JPWP02401727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24aea32db9cbfa4ee4df46b66f5993e1398970ba977d3e2bdd62df32783a15c. 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/JPWP02401728.