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 0x43e6bca779f588256a088116a1ec21d2b81f291435f3f5b040cbcf396a2f116b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cd4ae13-4bc3-4c78-b610-2a9942d57050.json and https://artists.proofprofile.net/proofs/artist/3cd4ae13-4bc3-4c78-b610-2a9942d57050.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fear of the Heavens (From Secret of Mana)
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 0x892c6c12e42bd29a73867ff606fc28764a9b51303ee27b505904cd9f3e3943f3. 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/QZ6K42200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f127aef4cbcd885050f646b06f507a530841d31788880b8eeeeb86e082fc727. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ6K42200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8afdbc1cbe28911737b4c2ea00c9e6c202c36a0588c699a1a102757e31ee1ba. 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/QZ6K42200391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d3ee3a54c01d6fc560e837e4df2424e04a005d6e64ed11a1e0f49c6a4c5bd4. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:54Z), 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/QZ6K42200400.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd14e6b85d343603c9d5eb5d11ad9b8bbf41614dbc04a2aec03078439ff65899. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ6K42200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d67eedd666dc56fc87c9535a50c35120a03b6f143b24ad75e692b55160a617c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ6K42200392.
Opera Suite: II. Aria Di Mezzo Carattere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fb916f12102c2a6e6aba2710072f7cff5029d64958227e72fa9a9bf91b522f. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZ6K42200393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391367231f9ebaa8103d5ee5d0cbf09b02c363ac281cfea5e480e42e2eeb5d58. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZ6K42200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87cc1c70be8151b830a352e38b3c6f535fb90a38cb89f09cfd48abccea6da7. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZ6K42200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504121d8c25a386569de674068a6be56f7ca43a01926d7ee8571212a7bc37ee9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ6K42200396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ba8f24f407137077eaf43ca974812eed84e0cda84e9667c6847e9041be22b6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZ6K42200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720144ecc5649bcae95968785ff8531974a2edfe77b6918ab34ee15682aaa2fa. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZ6K42200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe749c75d813fac50d08ec977f6b4ebb1c987296869354fdff3157e84675a3619. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZ6K42200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c87badf2ec3ae39a5f998ac7d66d4d1f86b700e61284774df2b5f6606c0936e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ6K42200401.