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 0x061b11d6bff1beb756907a3c6d0347cb93900e3b3b4791b7238d44607af27536. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f256bd11-86e7-4935-87c9-f08620ed6df4.json and https://artists.proofprofile.net/proofs/artist/f256bd11-86e7-4935-87c9-f08620ed6df4.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 0x371a8fb0e9d6257a57d2bcec7a6ea5d2136cf726359d9736fd4fb4bf92564838. 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/QZHNB2221897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc1fdeaed33e7e3ad396440147bbcf52fa575b377778372ab4d4f5be263eae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6K2272455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac8f6d3bc0278f2ad2defdbb401cbbb7a165a6555a78ad80525a87637a702fa. 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/QZK6G2266137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038c26a2324b89f3c8801aef67330897c05ed8461e98e0d20ac4ae93620c03b0. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QZMEN2252286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bb7ef25fb0c1420a96c3c7d45f8c46a4faf9f99378147f31dc61645628c6b1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTAS2275767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d00c1cf05c2521758e2d84a2efef563e9870697f4eee7e63ac459fec9ad1e1. 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/QZTB62250471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f233b14c4dee776f0282ffe68eaa8a2ca9716dc66e7a7b7ddac5ebf2084d1c. 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/QZTBB2200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e6daa91f2f1d3cc37d7fe61cab453d180b03b9890d9d1271761605d03a9849. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:49Z), 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/QZFZ72301305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e0d115947b3c3e5fd7ef6c1795981db003dced3c43c1e600855aa668415061. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6M2337892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cc9a35a0f83f18b8718ab10c096c226acac08c334c5dfe3c3d7bbea3a6f649. 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/QZMEN2382115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c0c94f5b5be2651271979aaa82b9701f213ec84db9f8eac9d5eb9b7078e503. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWQ2313562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa031b40eeb29bbbe80ce3f2e754e134a4c58531c487950647897a26fe083b5e0. 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/QZRP52328781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d9fbc6426de2ae46eff594ca545882a91cdc402cfeac31fd9851169edb4336. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:28Z), 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/QZTAT2387452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9166c3cc033ae32262c8cd39165b525942a9d7ff8e17d340e5dd750ec0a90d92. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:31Z), 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/QZTAY2385159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa488126f08dfc7dca960d90f594afd75db98144359e2008222b2c9afaa39ee3e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB42343920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6134060cd9b055061b3d92ea9eac037203a08188dd9098103d1550fc4d26f1cb. 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/QZTBC2340790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b982bf5258512cca74266d9c68594ff90c847b4bcc02875f0063b704eb80c. 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/QZWFH2325763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c2acf1f217c483f2dd97470651a3174a06c7bca9b059ae4f1071597f129d33. 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/QZWFL2352636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf033f9028dd1348e00ba2282567a7d89dbd0dbb2620be6922f13391f8302531. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZFYX2476246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a1c0fd77dd97e516536f790a02df68de5a9b1e50388bae832b7f1e39a4663. 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/QZDA72450305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8a33cb465a3d050c39b57a849d981fea568241bf69724f5981a11c6f1f0934. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:42:37Z), 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/QZES62406088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f48ee7e9c963231f7da074968af43be9e78d7b33321feba0cd738bca8deb427. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:01:41Z), 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/QZK6H2495670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b74a87641a8d4f1b36aa990c0de63fe21e24cfd552f5229f4dc90f3b74ab61. 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/QZRP42413734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb16b0566f77688bef8078c8e4609818984ffe618720ab4a5d4ed33069fb7784. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZTAU2481551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914d0deb7f226a5aaada0971894ffa06347dd5f23b7be27e4ffd02e7a397117f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:01:48Z), 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/QZTAW2448912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0d4392fb8820a060f707f799dd32a59771746572ac1368143644261b9c383b. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QZWFG2437955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ab0b7df941afbfb766fcc2b1625cff7e7462e3359fdd04d4cd63b33396afd5. 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/QZWFN2424649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5303833ca2e869e59fd140d7f578b7e1eb993f8f1e644e45e32efa5781029621. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFU2405659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc817e85d1682ddc2611f3012c3c0f8e2a1f3daee5b08c61a8cfcea568bf732b. 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/QZZ7W2427112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d3000dad60fe492008020a77f16fbac159308a671f21213c81fea49947ea32. 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/QZES92529310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ade8e99d94bfc6aaec5ae1d8bf96b72145c8af868eebed2116b685813aa87. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:55:59Z), 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/QZES92529311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3135295601cd9201d3f9105621b25ec23be0bed57e6fe96bddce73e6061f8a97. 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/QZES92529313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58982edf99085c401c27803020b8e7b69ff15b98f1ba47e1110a7d2c362d51e3. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZES92529314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99f2ca4f672402a61f55613574ab0470cdcf26e3417bb595b4dfff17b871e02. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES92529315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce936d17e7da2f86575cc5e7f3eb246d5636ab6c022c378947935816ca14051. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:33Z), 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/QZES92529316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50950dd46b4f9921688ed4393d73e7d9c534d097bca1d4d7f73eac1572db1596. 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/QZNWT2522317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c28741a4118ffc84d65947c68e2dbbb6b84f1e2b58e61fcd938591bdeeaaae. 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/QZTBC2527097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d1302b35b45d454b8229931ed477a9ac09ae7415f23e9b7238744397806a77. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3F22511641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36971df51fc7e1955f00b163e50dfa436d27592105e4f24152c5f6996b34c70f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6J2292041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4628d3aa2f3756a6914231a2c95b18d7c7374567aa3b5b27de50f3ba2b59fb8. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZDA42280182.