thumb|Pyramid of Khafre, Egypt, built A pyramid (,The word meant "a kind of cake of roasted wheat-grains preserved in honey"; the Egyptian pyramids were named after its form (R. S. P. Beekes, Etymolo
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 0xf6a36527bb6715f999a361972d1424f6672d89d7cfe89d4c3f9240541305eab3. 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/46e0591c-6582-454c-92f7-9e242c11583c.json and https://artists.proofprofile.net/proofs/artist/46e0591c-6582-454c-92f7-9e242c11583c.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 0x32562e8b514841a0bece18458a444b24c54b83f1a1face8df9c1f989bdea20df. 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/QM6N22279451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87d7afce0acf2dfec3ec037bb8fc2e153eaa24a409252a02e01286192230172. 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/JPZ922209202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ffeba036c1da4b1563b31d376130e01c3e7741ac0b10c77a186b7953115033. 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/JPZ922209203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69c25c6d7bc7f58ae56c04071d9a36a9148d81bd0ef43e09f5c4d85dccb13f5. 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/JPZ922209204.
Back To You (feat. Millie Snow, Nenashi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e538c56478c0088c97c3110afbf18abdc309d62e211eeca5f7b88764249260. 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/JPZ922209205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e67c91b9f6476bb20dc31d7f05945e976b795aa52d3de20f2302a82a66abbc. 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/JPZ922209206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd3aa3dc5722508318223958bb3be686259ed31703cdb2134ab97306f2b1716. 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/QMBZ92251509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c5f9cf77f88d4ad06090c4994404adcda7ffe2875a75187d32d63f2305d40. 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/JPZ922209207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb827e67c721db172cccca3c8a936c5fa5fa83eb1de06285060cedf80d5dd02. 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/JPS101800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aff060768e118ad954a44e5b69a918a172fb9d037faff1e26f352384e7addc6. 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/JPS101800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c80a1a5371fae9316d974e840fd5adb1708e1d890b258398a5a89d288b5e85b. 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/JPS101800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9aa70bcfc8a7166e18c9e9165f77fa294ee17149afd9bd4ed47ef51d5b34be. 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/JPS101800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dff2d8540770471842fc9cb9bcba504677698b08bd9046c61346f5fe416a2e. 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/JPS101800050.
(Interlude) Are You Putting the Moves on Me?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2421184c630280de58e9b7ed51946d94713d84ded08dbe7ded088bc23832af14. 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/JPS101800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab72411a684175d6e590490874568dafc966398619639269eb37e647993cbc83. 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/JPS101800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0cd9bee97d5667241f57854741220364c9a85cceecbd017ffdb6c797f170d3. 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/JPS101800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90665a4e2ff4cde1b955c74d33c8524143c28cec9ed7827a674b75600c2bdef7. 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/JPS101100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee189a678cb0dcb8a4ab22dc50d96238948ff7fa53236b30b9bf445c9137c16. 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/JPS101100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726361f8b3ef522fe58a1950b8cc0ca919cde07d357b1f60550401902b165d5d. 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/JPS101100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5c1043dca0376b5d72259909204343d3f731a87c83d63ecd334637570c7b5b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM6P42456151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21951359fcc932c070f48dacd42997a2ede8d2688534229b130277d1b13a6df6. 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/QMDA72265667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32562e8b514841a0bece18458a444b24c54b83f1a1face8df9c1f989bdea20df. 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/QM6N22279451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb22e791911e4a1522d9c0e5167e75c04eb93f391a75ee95e1ce3fd970eec3ae. 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/JPS101900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3429b41a1277e5e8dc9c737ffa1f9e38351c7c03d238209a6e62691c21c6e9. 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/JPS101600033.
HATS MUSIC COLLECTION ～ Taro Hakase Collaborated Works
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa035ec2d41dd2cd943159a07a4790c693ff86b583af6c3f577093480aa07d5e2. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPS101600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2557be2091524b845041a9c8fb2c9ebf9a715f8cf446bc3a405b34b579d7245. 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/JPS101700086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4a417581a0d289bc80bb4f34dcbb7a476a901be88ccbce1fa290ba7c115170. 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/JPS101700002.
HATS MUSIC COLLECTION ～ Spring & New Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1c6c1fd6ac653b19daa2f7e412d8e7e8ebb3eb1f0315c628850599853611e9. 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/JPS101600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbe2fd7ce19a2bc4d81e8d003a3046eda011c247f6e2445e27f10630aad9ad0. 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/JPS101400075.