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 0xfad9b3dd5e6103be263d0390e52f187aed6b14ef168a1ec7a24dfe01e4e403a1. 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/6e22be84-1749-4da6-97cf-f09718b3403f.json and https://artists.proofprofile.net/proofs/artist/6e22be84-1749-4da6-97cf-f09718b3403f.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 0x77b4fb9442f030c1ee948c673c4a6b02676106d55c97716141fc677e80d954da. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL2298182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfa530ba7a00145c797f85b6e4a7fa16c87f43068695239ee437eeae5855820. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKPL2298177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7b878150e1642409b43981be899d6bedd8a70f53e32d512bb38e5e2d852f91. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL2298185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96d214db01c527cdcdf9bb6614273bc6d32e870535ca277dbc1dd9332debc6e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL2298187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814bb6e5b1e3a51f0f7068f3a0c9f15049febae1701c81afc05a9c9c410450c4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKPL2298176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877b51fbb58bc10f4441495c10bf93aa176edaf8858e70a4d8138bc1c2da16be. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:42:12Z), 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/GBKPL2298183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848b1d6fbadfe015f0e6ca67d78a852db1a5ae9026f362e2b992dc82b0d68dbe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL2298180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a7695992de981c41b31c5c9452f67ab2e7c773bd169f5ee48c13d20d1e0eb0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL2298181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f5c96a9e3ebb7e44f1d0527511e5f89c29374496437888d2d8412fabadc9b6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL2298184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab49aa9f7b0b23475f196235dc137491ef534dff43acc977a790d0d338dff208. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2298178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e384f956f1b629985ee7ace22d0e6561f514f4c7fd008f9b9e20e347ca585d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL2299454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a78205cfae3dab869cace243dc9d1cf81b317cae8d659e8853202846d72a120. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKPL2298186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fac6c2cd48261d483e09ae6718ee5f37c2fd930294569ba519669390e633ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ71954824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f496851c906e773b1c29a9d8881f03b5d04461ab19afac2a5a679db9bcbc38. 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/QZFZ71954825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3db824e3f2c2be91f56cafc5a618236d8ebc7ce13ccdd54d28395cd6098336. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ71954826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5aea5a9001634b48739aded9a1fb57b37ac841f33a3734f0566c2268bfa9b9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ71954827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ac29b0f194d57233342f4dad8ececdd17fa1a97a5e6aa96d828692603165f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ71954828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f2c4c6162a1d3c02fd1f6fcc1d36d755214188885ac4ac5d106609e2085c2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ71954829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d178b81fed9332c36b0eb0667581ec0dbe33e8e081994da1e61d3f8ac9f0d8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ71954830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dea1f2b92a28514ba3ce3345fdc8740e9b3d7a5e6eac8b53ae37ace9ede6ee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ71954831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa74fbd7e1628817295e22d418c81c3cc2ddf587e7d82bbd4abe9aeec008a3d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ71954832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f45822e1e217a5adacdddfb95da585a65464c56e8c3ed5a0242611fdacbfaf. 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/QZTAU2361822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b38318578b74eadd0bba21660caacc5c50e025062e0ba8111b3b7e281dafca0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWQ2372795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c75dfbe7a51d0f9107563ae1becdb5339459e0a7f12e4cbbd75a99518eb9c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:43Z), 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/QZHNC2321969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e77a288ddc9c3b64e9f09c727d5f5b511b514b3ccd5e66b9edd5f219613ff3. 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/QZDA82322765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0d6b08e5d964acbaf9ce0427f2c5438570f1a5f48fcc880ce7139641aa417b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2174451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c58f38f8be3d0a87b5de6ef2b305c17ea392f6c4ee3af3342fd2861fef71de. 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/QZK6Q2015743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0e42421eaa695be25d92a1eda08728ab925116c52263e70af498c420034c49. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ62021396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fe67bc336421b5565dcf081ab1a01eb652c520f894fc5a7c1703ea9c8fec1d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNC1936905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ed5696cd40edcbcb63a4ca739ee55d82f5a722760bdd3085675c57858854f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN51980069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed23ba6403d66ad3c6ef6df5305e6f763a1a3dc78301857251e1fa28c33c4e8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL1949724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266ec78960322f124fe59b06560294dccc160fc0e1a5ac531df54d3f2b0dd0be. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES61865008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf6e33ed84fdc64cd953042f43c5256690ae6ad4a431f63788f5cc4d1e8b068. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMPKX1851889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27802fbaf077a18719c1b83eb55962114a346393ebac517368fe59196b68cf92. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:09:01Z), 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/QMPKX1851891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09239ceb09576a26990701b159d941a1d690a99d837ea15a124c49018923bb1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6M2427409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705965b9f75500914b42ca286979b1806c92c82c8d5d78592f299f57620d0b99. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN32452499.