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 0x5b568abd5010569f9c960df572317f428cf36953d8023d7bcc4ba7591e4b801f. 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/65d6d2d5-ec90-4ac5-b5ef-5e183c6c0c67.json and https://artists.proofprofile.net/proofs/artist/65d6d2d5-ec90-4ac5-b5ef-5e183c6c0c67.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 0x222812729fac72325b546874b3df585a18a78da03768d718ae553c45f9de6652. 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/USDY42266979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ca63fec7516a5a66e79b9e9d103eeca11cb677461b5d15a70530796c8cdf17. 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/QMRTJ2300472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc89d11bbc18d69fb44a7e998fc8405268cdb45be15f69e5029885fa147e761. 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/QMRTJ2300474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7020bacda5039a0073125ce60b3ea5675f6b0a4cb8580355eb90ca8c23b055de. 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/QMRTJ2300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce62674095aa0e5af88279e71c00d10e495366e1732c0dadd471d40b8dc1ad8. 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/QMRTJ2200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7db568183c40a871f551e952e7ba635fa720fdd202c5a23b1e3af460000e76. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMRTJ2200504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356ddaf679cd06528ef32425176e1e96bb8d0276015014a7a8c62316eb1a211. 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/QMRTJ2401188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb89377abc515d38577cc9c8a350ef93e2e06d9abf8fc397f2c012ccd802ac4. 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/QMRTJ2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf977686c5533f954553e1a43f5ed9965636a8854b3a4413cf2fdb08875c5c0b. 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/QMRTJ2400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bab8a34ba938d20b04f9dc076d568dac38419b6869bf3e554d4ab8a357ef50b. 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/QMRTJ2400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415256ac63e769d857f890cf5e332b3eaf3e34defe14bbc134d663995a7199c4. 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/QMRTJ2400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29b5e7bcac8cfdb2c1ae8590edca61dd5a89e0706d0d099c6550c0f9f19f274. 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/QMRTJ2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ac9c51b07fc955304aeda35c23ecc396b6c9d5f71c1553cb1e891b5b7410d9. 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/QMRTJ2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc293311dd90baafa81a3290506bf0b50de5e68f5fb40add176c35fdd83e8f3f4. 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/QMRTJ2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc3902fdad6391a48add58aabbf39077b78fc0d584f56043a4c48818ab2ab39. 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/QMRTJ2300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e05e5aa7d9b156c7433c8c54218c341041478e76e7340e9c819b8240acccac3. 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/QMRTJ2300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315da857fc3e401846583fcd7b34a355775bd12ccd81be2dacfaaaef6e975bf5. 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/QMRTJ2400447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b36decc93c2d6d0f72d2f7cc682724ed17686aee0f8477ccd3d26a476648c31. 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/QMRTJ2400448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c554427d32cea266a00993ff73a97c3905181ee64abe5448bdd2e58fb1d123. 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/QMRTJ2400450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24b349cc6193935508f626b1b8d535b86553e997527570f1505ad7cfcc7f19d. 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/QMRTJ2400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9385b028d624f2d474c14aabcc791f308ed2341e5226d9c11de023eb56c2444a. 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/TCAJF2578156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e46e86f56f5fcf889262c893665f4ebf5f4adac0ecab114555d07c5fb2ed6f0. 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/TCAJF2578203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb760f1a0626df62835f15b423ffa90879d066f31738c7b796545f7f7878419fe. 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/QZZ8B2335016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29b5e7bcac8cfdb2c1ae8590edca61dd5a89e0706d0d099c6550c0f9f19f274. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMRTJ2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ac9c51b07fc955304aeda35c23ecc396b6c9d5f71c1553cb1e891b5b7410d9. 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/QMRTJ2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc293311dd90baafa81a3290506bf0b50de5e68f5fb40add176c35fdd83e8f3f4. 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/QMRTJ2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc3902fdad6391a48add58aabbf39077b78fc0d584f56043a4c48818ab2ab39. 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/QMRTJ2300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc7c449cb24def9bd8b02084a612dcd1ead6852329691a313dbd0debfab780d. 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/QMRTJ2400323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b625dc4edab0ee84c57f334a9e9503cf78d948b0e845cb1217da554188dd9c. 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/QMRTJ2400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ee759a74919f69ce262a89f0544a6030dfbe280f49a5aeb65358958335ce8c. 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/QZTBB2383131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b2bea5125797a10d155457959b49f4fcb0d4137d8ad1355a1901b62db6a9af. 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/QMRTJ2500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6b9fe67d6e09acfa1735574a3e4ce56956b769f33f72ec035f97e2008f5940. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QMRTJ2500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4ca78e7668ba76e847dc6989e804fdde1fb0c0b98170de63d0f7b3b97f9852. 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/QMRTJ2201246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389682daed074b70ac12df5d1e62beedd05c32046a42f450241187e99a02a2a9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMRTJ2100292.