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 0x037d04066ee0c995992c088f6c10f686a09990c2aa1ca092dd1a6761f1c4cac4. 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/57b2d54c-65fa-4d65-8dda-93cca42bad2d.json and https://artists.proofprofile.net/proofs/artist/57b2d54c-65fa-4d65-8dda-93cca42bad2d.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 0x2644d0c5c2720cf9aaf32d43015b82d091e3e61334fdb711911405dfde34c507. 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/BKTP72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99cc16683e9744a926a727868959bfe03699a86ca5f9b20c061f58cc3ab4210. 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/BKTP72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d5bdf8a0797317910f949901955a68be75d82c8d837229fc29e4cc3f1fbefc. 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/BKTP72400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd751934e0f097ab632e9c7cf60f4364c5301367c569849a1099914869a1a46. 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/BKTP72400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db3738daf025934d42c40aa84d7c436572e93cfcce813ea829a4c880d68c2ed. 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/BKTP72400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0505e09e653405bcdd30cdfeac52d7b20da075dcb5b19b5ce4feba885c1cfa. 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/BKTP72400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c21e1343fe677ffc3e10cf98644b1aaf708a709281cf1e75d5d8029b193cf3d. 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/BKTP72400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf989a92a13c6a585f2356c5dfa922cb97e7294780cb1b52fa846763c66131ea7. 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/BKTP72400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4878692d2efe9e2c75283f5289110a35e02c0b36176ef6e76494da55212908b. 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/BKTP72400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48187e6d5fff9804e5d7129ae2bece31379daeb4f19005418513c962cef082fc. 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/BKTP72400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9012366bac4c38673b2562def68dd98f17111ce07a765ca22518326f211fe9. 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/BKTP72400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d251591b9573c22ebe9223396eb3b6e2f794faaf9c12c129e9ee3bb74ba30. 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/BKTP72400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7ff31105fc7ba7b4bc54c152c7b48a61172d4d461fbbedcbfff8bf1fbe5490. 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/BKTP72400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69df62f8690acf41870da0379672eff4b82bbd6f93f36b867c2184ea646197b. 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/BKTP72400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b16ef013ec73616c84337e4eda30aba5f4a7951facdb9c53f50db70a99f00c0. 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/BKTP72400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f85f48d627ef8997ed91d31c88ed63921d8552828328d19ccc3ac01e1e805. 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/BKTP72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8495db51f5bd1dd3d19f52c0a80a9ab13e8116ad6c8585acdcaebd84518482. 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/BXW772100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf21caeee657139c4166402af0344c98eca02823b9010beeb22e24ba9118b50. 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/BXW772100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d4769b66bfd48720a01a160bd84bc77e9e00e08ef5421169a4435d2cbf3ea. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/BXW772100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f8fb7254ed369afa99ad6295ce0ef9df8dc9b9cedceb240810e5d3f9a3edce. 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/BXW772100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebada35e7b529bdd329ddfc48e254281bb393374c0da8a9058d3761530bccbd. 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/BXW772100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e4726a5ef77ed775d5493a410d5e8b7f823f91291b08a3f53b4595250cf9e4. 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/BXW772100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf318a5cfab7477be84727a44ef663b6b60adf136a2e34381cd6db9a3dadf6fa4. 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/BXW772100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2923b522301563003248268e64117333bd38e6ae2f421f690c5d4f48ca3fec94. 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/BXW772100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab1d6de1b36edd0991fd8ec7d9f7ec338f406cf178fea660ef0112be7002c1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXW772100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86cf2702b9c1e7d20f08b75aba44a4d76f62e0f3ea87289d6b2510c1205c7d1. 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/BXW772100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc491052ac82b054e98c9fffdf05c71cf44ddf0a6b2055470fdea3193dfff488. 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/BXW772000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b884824ac835da5e85139232fe6e6800261ba26e86e3b08ceb83f95bf413b7c. 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/BXW772000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759295d8181dc8f749a02dcdf1df1b5b1a3e7fd49a2b78c11fcdacf72bbe2f88. 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/BXW772000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a1195f518f096a4c39a8943df1e498bcc933408383364a1bbe01e12d006feb. 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/BXW772000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00726077e03d4083901dfdfac03cc764561ec40430a59eaf786c6e1186bc4a6. 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/BXW772000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79526fe47e58fc12cadbf6b36c73ef8dacda4af623193426cb5c63d9e6c90438. 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/BXW772000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3362670241f18c0d8cb78f1957f3cb693d331ee6e34c09c85d80b6e7770a7c. 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/BXW772000019.