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 0xaa7b4259a1f80578a0033bdf02fe88956c155c22dd289c02e213dac529b63cb5. 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/1494c5ce-bb61-42e0-9697-037131f3f91a.json and https://artists.proofprofile.net/proofs/artist/1494c5ce-bb61-42e0-9697-037131f3f91a.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 0xad9381131895165788d947c113d4d36b5d7af7d08cbde2be0fbe0b55d197aa2b. 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/USF2M2100941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaa486f160067a816055c8cd84b8f850f1582179463b5e4171c3ea6fc78b254. 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/USF2M2100942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bb2a450182f361e329d72de207c90231fd1a96981197ae550ee944146b82c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USF2M2100943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d73feafac20dba35ea00fe91da85a7de4f43293544af846ecc11e9c788a25e. 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/USF2M2100944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe591564f78221cba0667393e21ef4634b0f4585d3d945f0c467471e5c5a4c680. 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/USF2M2100945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d68350574ebb53dfac91752c5e5bfcacb86dc33b1df732a4593014ea4a0c48. 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/USF2M2100946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf80a107ee528cd84d37b5f8e204fe614f6a708f518cc65634b107765af6ef07. 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/USF2M2100947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30191f8288688e11f8b5e045e528c2be62407ff774f54cc2a44d8a1648981308. 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/USF2M2100948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3dd9f648a7cd080b4708070f3ef2b6434db428d023fa729e7f735c4eec517b. 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/USF2M2100949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6f6bd38d0f4d7025824a0805f9132b576dc9bcadf298b105eb8dd49f47857a. 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/QZNJX2494643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c89ea14b564a28f8556d8d05a26080c14ca1f2617c87c12691045bca5bb5de. 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/QZNJX2465662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889dcca58fbdb3c98d03fcd2e3e33fe4193a15ca951058a9c781dc8908060792. 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/QMB622300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970c03022692135f694243e151a05a949e6677c531b7c902e9d57dd020a232ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHD2316603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5f04264a350180d332dbfd1b8f6e1692c0dbec354717df745a4231cb01bbd8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJX2086955.
Thinkin' Bout Tomorrow (OurVinyl Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc2364172ee0247160b7b7ba96c8cf7a8b2362a413fcebf563bbec1cd9c8c3f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJY2004244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96933be05193ca57a8f9936300b8c0647bbf8902aa986e63ce9d067fcce706c9. 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/US7VG2113833.
Friendship - The Wild Honey Pie Buzzsession
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79488257412cbe3430944491a325b8cb9d736af6a33281e0e3750de89454a12. 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/US3DF2026342.
Highroad - The Wild Honey Pie Buzzsession
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb9753c903dfe4f81ca87ad477481aa1cd4fc9e753f363d2bdeb129b7db3345. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US3DF2026418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed44994b7a63da2acddcf752e725a1f1c87bc420b9f781c6679e0e628306ea0a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QM88K1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa94bb7df3b89d94a6d7e68e59840ed4ada53f459a27e530c711d3eec4a8f6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM88K1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb125a63d4c62c1fbe80a993ace00834a47c184430355b67ebb5c7a925cb68c0. 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/USF2M2000832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96ac4961c40585ed1a278ae053368b8976f41eda368ea01fa92b322dfb3b117. 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/USF2M2000833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac96d7706975b9ea6e495719dd63c0d7f0cb3b909078587ee7d6c911bded3356. 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/USF2M2000834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa03c7770db19cb0499aea1619a70aa5364180fda7cca5d1c0fbb2babcaf3f79. 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/TCAEM1990410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa94bb7df3b89d94a6d7e68e59840ed4ada53f459a27e530c711d3eec4a8f6. 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/QM88K1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed44994b7a63da2acddcf752e725a1f1c87bc420b9f781c6679e0e628306ea0a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM88K1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728ffab20c59253806efc42f74627601b0e537125e7769ca24270d869a4f2da5. 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/QMQQQ2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42c85bc47b7a1ef00d4d8bef2ec53c70e1db2cac403c3052e96329b8d497d2. 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/QMQQQ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bf37777592ea3e6e209d404596978a030d850f0c73be529320ca9be1fd8900. 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/QMQQQ2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf552a65aea24462bbf9a1d5659121a578150e2e65f6ed73c794f5324a85a98. 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/QMQQQ2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa5a6c84bd32e62b6a955f539233427520b43e1186b7370c93a95a418369f3. 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/QMQQQ2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627544cbca6bbe5db698986896a8eb0153a2afdb477e86e28351fa3e92186e9c. 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/QMQQQ2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3265dd5f5ee793877391fb9d562351fdae0feec6546f568e1b74e9eb2d20040f. 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/QMQQQ2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5263e0cc334536e31497fc5a6a6380512137dd0be77de770f857abfc8d8e5c. 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/QMQQQ2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97667bd614469f036cc598b7c7fd080640cbf7d5a011946e5809899476254896. 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/QMQQQ2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa24947355af989f246bde81e07977191c2657bb74d398dd95bd0d42131334ff. 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/QMQQQ2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51531db1523878fbf7740d53bc36f37851d2a1ec33720c05a9d25c2cca2a4642. 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/TCAGX2301177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889dcca58fbdb3c98d03fcd2e3e33fe4193a15ca951058a9c781dc8908060792. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMB622300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450243cff2114ce8bcd55f2c5e08e837953bd918927e1a91ecf47c79b3601b91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMB622300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ddbd36375095e5e92d687cb1e47fef2d183bcb9e41216326b2d7c28dceb10a. 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/QMB622300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c50208b74f8b85acbe3d9e02a7b4e346447ed62bb233c202da9d0c3ba4cb70. 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/QMB622300199.