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 0x284c9b7bf079106e030b842bfc26e46ea6861f591ab291857b748cbb87cf1dff. 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/dc5974c2-ba1f-43f0-b3d5-259c167cd545.json and https://artists.proofprofile.net/proofs/artist/dc5974c2-ba1f-43f0-b3d5-259c167cd545.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 0x7576a445d0c4579e091fc617756b51b5e3ba9fd31e8577f8757368fde380ac5c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TR0361300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc05a1894a42d326b79b99469a677b77c4c079efa36df757baead0bfa334a71. 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/TR0361500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282fabc90a97035fa165984a98a8b64317d2811a00480e54bfd6bb1b1b9716ba. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/TR0361500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9182d7bcdba97c6fcf0f4bc863273a014d7e03869a7b56801d59373eaa69038b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/TR0361300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76266a83593e042152e64c624498f0472972691a0e9168bc767a81b29472966b. 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/TR0361300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7576a445d0c4579e091fc617756b51b5e3ba9fd31e8577f8757368fde380ac5c. 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/TR0361300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561eae153a3a7c6f81be9e9a7cad0bd6b9fa31e90f431fc5e3b914c81e5cc34b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TR0361500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493c006d70bfd2b87ebf19e23239aed89d51fd2e497b1f184280cfff6db28bea. 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/TR0361300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1049e5e8ce33826ec948110dafdffb5f69b1949f9ac8b205c90721dc79cfaf. 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/TR0361300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8223f2f1de57d765ee50c5bb221afb90ac5d4b3d2eab27583081ba7cd49859d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/TR0361300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf595b25012abecb04f758bc6dd41471d6995925d64c5219d00dbd61b0845bf. 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/TR0361300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1c29cb21edaf3d28d2a97b3980fb88afab52eda42b98c7be69b486b3314e4c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TR0361300166.
Hani Gitmeyecektin (Şiirden Tele Gönülden Dile Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28691e6ba03a764b747b8bb29c61f78f66f1db88ffc12545ea5548bf1fb4bc15. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZES62076542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccde42f9e40caa70199141756fd3e97eb970025a59a5d3c7fc024c6622893e89. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ52134265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10a628ac9244be78587b33d6e0a24d345d88d9468de397f91b1edd4b7c37dd6. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZTB42307994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560e58214a23c916bcbdde3c904f7f856916418f7f4c23c44b3040fb99a41d0a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZWFQ2439409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89da664f1797ee1764fb0e076fed06aab672166f046b608c6ccc97defcc1e7a6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QT3FF2565517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0d01873347d5b97d99342b3712057faa890b407fcbd42369c7ff47d860863f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TR0361300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ccaefc242e6852e33acc14233475368635f78bf93a380b44964cb6bcaa12cb. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TR0361900042.