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 0x8b0c63d9b55f8cabea3aa88b5b670884c8c434a490c62d3986609ca630e3a19b. 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/8ebab20c-e5b5-420f-af34-21cc9df6b22d.json and https://artists.proofprofile.net/proofs/artist/8ebab20c-e5b5-420f-af34-21cc9df6b22d.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 0x58f617d00ab65e9d27388ed0a27f4cb3d3ae8ec49684b378436b3c2c47b6e9a3. 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/SE6HN2475077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f34acd695f0b42813180fc48ccc92f33b13d368a1e1316b0205b5af15b8908f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6HN2475085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76b14b5719279e9d6de14c9c8553cf540494e2c4cab8ae9a4e46811798feb36. 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/SE6HN2475087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89212fe6c45c7f97a76b2fd1c5de3fa570dfa18cbcadfd7e3cd3a8ced687a35c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:50:18Z), 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/SE6SA2421077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c9869f30f9ec39d15bad7dc27cdf0ad17c8609cf1be88975f57edae5f56302. 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/SE6SA2448664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8d5980b8d8904b5763334ce6486a483fd10f38b1ce184006556c85a50b5d36. 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/SE6SA2448667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ede323ac154b46ab61df7c2ef7d208f38c650cf8a8ebab992ccce74e41bffa6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATBK71200431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c4264d990f221ec7d1cb9325efddb38daa8b5d9855b8b7e46b726b38d6dcc4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATBK71200432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc7278310cee72a2b4d2d2cc3a19fa3778149c8f0b57e194cd5a4ec8922902b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ATBK71200433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ea3130923e29c19984f461d5e9a8372aec012dcdb52021df939e8756ac8940. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATBK71200434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70da225116b729c0a50c710142792527f221ab71c1f371ed5e264dc9ddd5d13. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ATBK71200435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74138d772bff93f6f1fea824558ab4b6f5db15365d6f94cb694b13f7aa942bb9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATBK71200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5eab227b7f51eed518baf943942641a779b314d2e964859b40ea3c1abb175e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ATBK71200437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b10a33c15cada92d7510fd80a277159915615bf040e01308e69403758f2d2a3. 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/ATBK71200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0922eb52e9b09906627d5ea4c476378ec0f32a2202875074c406bae867a73e23. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:11:20Z), 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/ATBK71200442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e689956629a81925dcb8f551b08bfc04630a71ce6bf91c42be441af08a2a8b4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ATBK71200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e03da4ba7bc447c2898cd179398c82db4a3f8ac8731525ec5fb0eae685f5765. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:50Z), 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/ATBK71200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3833806a057a0615edb18f0da35bf3f187a25a1d5986d7291be37d91d8a5bb56. 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/ATBK71200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc288c2a6b09cafa543cfb8c6ef9b37a4cc53719f4bc242da1e434d2c49c280e3. 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/ATBK71200680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6181cfbdeb903948ca698e0b00220a55f65a15c943fd160296845ff7b69ef9c4. 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/DEH742502618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d57f769d7717b036ed39afbf6e3cdf6a15ad65c6619be7d950b95298f5ce5c8. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ATBK71200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62724ab5ecb9ca7dba4d647f057bf0cdf1e212861a1640bdcfc685b1f5803ee5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:58Z), 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/ATBK71203248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6f273d8b91926d1524e66be8538292ea0d04a3b149b177ceee45a6ad7b41df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATBK71203249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18f3cb1f4b7920f7054d685a6376c4df75736e532d60e4b1f4856c97799776. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ATBK71203250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04477346eeafceefb54dcf6541efbb689fdc253065b18eda2c7eb6cb63cb970. 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/ATBK71203251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fd18fc907fdea23930324e6adf0af8fedf28f5874d64aa8383e25439f6e5dc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:53:26Z), 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/ATBK71203252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba5e0ad8bf5b4e0e10828e6581c132fd7cd6945f6844175777578a120ba6705. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:42:48Z), 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/ATBK71203253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9206932cbb4e6ac5ae06177a69788ce8ab4c3a20cd35fb5b9f9faca1b09e98d6. 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/ATBK71203254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba75c0ba75cfb4e8b72cba4ffc528bf8ec9a6e02cb79640f9e9fe7f1384853a. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:43:38Z), 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/ATBK71203255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0f532f8f5336435e1bc835424b250022ef8c0af55a42812127f322b3e537ab. 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/ATBK71203256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eeb02080c616cace3054f43cf3287f0115714df887cc8dbff717e31c7fa9ed. 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/ATBK71203257.