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 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 0x7047f2dc81496a73941cd96ee28f2d9c8af1bbf57a883cc8703aedf4ebb1dd27. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac265992-d092-41cc-8438-46e64c510b11.json and https://artists.proofprofile.net/proofs/artist/ac265992-d092-41cc-8438-46e64c510b11.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 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 0x95a879bea1ccb2f4966eed8a953204daae9f29900a817f18a001739cd011ee5d. 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/QZNJW2404561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cb746fcd1e4f3e1e32c1f6347081404ededa94be372184d49aea7298acd2bb. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZNJW2404562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78af4f2c1d965ce60049cde27b5d8b5bcc39c22d1b62a3031b524ff8b0f1ab15. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNJW2404563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f884ae4d77949bb72cc3d06908702861497d39a0e6a911654f269fb1fa90027. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZNJW2404564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4c20c05b4186ca2021077c1a6e4c5b5e4e3f97286964b593a0d847c790c368. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZNJW2404565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88995e4a1adc8e0a7dcb35075b40bc6c60e5ce05088cc05a6056e6ab7eb10960. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJW2404566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc270d7aafa52126fe0d7bacd46a088bbe77d53d7ac1f34eef16c7bece8d13442. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZNJW2404567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5923ab75986d67375a7f59997387effc3b6b14ccbdf80fb3ad9e2443bda422. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZNJW2404568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29731de90cf111f854ffda87d1247396f2940a1b08342242ed853e260df8b869. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNJW2404586.
Mariposa / Para Que Mierda Me Enamoré / Te Amo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b25512d2ff678c98b158db32b3395ac5d3eb434d412a4d2eecc5a79034e15b. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZNJX2436909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97efa4ad57262ccabdc526ee86f8b23fc193da69a4af4724d3f3136562a6fdb1. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZNJZ2407213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbd79c76d7e6c90e3f6718de8160cdd9c61c71b57813984d57c5ffe832c110e. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZNJZ2407203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf876f7be47cafc5c9831f68cc0dcbc4e6dfccf624d235becdc92a34fbf2911ea. 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/QZTPX2429069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4088c37c29a2a6acb991711df2e8293954cf84b49baab4a8b44d2894202e142. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZW9K2408154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fbc10f08cfdc38ff6f978d1034e44ebf06fb06fdb887b1c1105dd3cbc7bf25. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZW9M2403146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8393f50a8574cbb487b8261126aff2998387c95e8ff1db71bd63055226319ee7. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZGLS2567627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e8bd7f8517885502a971201bdfa826bc459aeef3664d0d550daf5085c6074. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZMZ92515480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6174716e3851fc2dc634bb99ec5a0f096a62409ab7483b6cca9aa8fefb0668e6. 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/PECHY2501093.