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 0x5dbb1a0bffbdf818f4ce3e89f797fa2f7b3b464145fea57070c4207492cde9af. 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/b8cbda62-9d0e-4305-9942-1670953c2a6a.json and https://artists.proofprofile.net/proofs/artist/b8cbda62-9d0e-4305-9942-1670953c2a6a.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 0xdf7e1ffe791bf154a71e0cb1f61c95fde4fe8eb34d28cad71d5098d5c0c95efc. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZFZ42428794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203a0f9b16cee61a28de2b7d0498441f4673749a31c870e7ca86b686768a9911. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZK6K2438126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e5dd93090cd5c85a2b1fe3753d9ba241ef01d00d2cd806173e6e010eba83ad. 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/QZNWT2442177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e5dd93090cd5c85a2b1fe3753d9ba241ef01d00d2cd806173e6e010eba83ad. 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/QZNWT2442177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9134bb830c7eeac3d3facccd7284eeb519314c0d1246d3b2aefb3982e6793be. 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/QZNWT2442178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3fe10e22e23d44dced28d54b20d3aea50ece0b89b44ca4ddd5e07dcabeeb67. 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/QZTAW2478511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3fe10e22e23d44dced28d54b20d3aea50ece0b89b44ca4ddd5e07dcabeeb67. 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/QZTAW2478511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa171b3f15cf4b9912afea2aec8b3006fd05ada5d113f8a3ad6a4ef12dac382b. 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/QZTB82408087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4909da3f742932369ff89309b19fe8d5c9ac51276abb4b45901459eadca4b867. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:46Z), 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/QZZ7L2421226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fa842b2d3e903278779114c99920c903999b9fd5991bd193d768cfad5ff08b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7R2416042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f1226b37c03b835ce139a84d13503ae05fed8d30b353c68e2218c44b4e5243. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFW2460322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2630283f0022f8f76527d3e3a81e5d2aba8f1be3291c1cc7c7615936dda7cef9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:40Z), 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/QZZ7R2416043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963695f9858234c34bde6c78b91dce08904ef563019940e980da30a580363cd7. 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/QZZ7R2416044.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23fdd19bae544cf74ddd498930687c7d7201ba0a8223012c9f602f44dd177d9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZZ7R2416045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4cf5cabebfb4ea53d5af8e26f3a684a27f486fbc1d4e44e5eeae8b600d623e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:39:38Z), 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/QZZ7R2416047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81991ffc98257e722bdef8b568412f72c8fd5aa0eb378285811adddbcdebf0b5. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZZ7R2416048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4909da3f742932369ff89309b19fe8d5c9ac51276abb4b45901459eadca4b867. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ7L2421226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd646adf4d2a4caa10c05541fb5c26cc380557f8b8df9c24acaec7971d0eb0a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:55Z), 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/QZZ7R2416049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f1226b37c03b835ce139a84d13503ae05fed8d30b353c68e2218c44b4e5243. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFW2460322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2630283f0022f8f76527d3e3a81e5d2aba8f1be3291c1cc7c7615936dda7cef9. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZZ7R2416043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963695f9858234c34bde6c78b91dce08904ef563019940e980da30a580363cd7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7R2416044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4cf5cabebfb4ea53d5af8e26f3a684a27f486fbc1d4e44e5eeae8b600d623e. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:31Z), 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/QZZ7R2416047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4909da3f742932369ff89309b19fe8d5c9ac51276abb4b45901459eadca4b867. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZZ7L2421226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc9aa6baf5abc5baaea17020d47ed23326538f8d41606d80a8af8e912991685. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7R2416050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462ec9bf03e9bde7caea2cf8ffffe4efb8638027d2d5c19513300d837e7127a5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7R2416051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ff6205d4f4ec60fb492e9d6e4f93904176f88a523a2a5b34c4c2beb0545a3c. 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/FRX282520049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729d5afbc3225687bee0c3a463239d206a3bd8e20ebf81800edf60f1df4de0d7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:18Z), 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/QZHN62565039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7660678d965d4722ede957e7a234a1240d78c778b90457f704a1ff5da18f2a. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX282598226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ff6205d4f4ec60fb492e9d6e4f93904176f88a523a2a5b34c4c2beb0545a3c. 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/FRX282520049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729d5afbc3225687bee0c3a463239d206a3bd8e20ebf81800edf60f1df4de0d7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZHN62565039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b11178a0aba357808ae225c43a509e4360deb374aa1798b8aa2ef763044572f. 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/FRX452577093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7660678d965d4722ede957e7a234a1240d78c778b90457f704a1ff5da18f2a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX282598226.