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 0xf39a5356b83a2325b755b277a7edf41bc6a51945ba63e13e70ff898fe9c22001. 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/a191a5d2-255f-4b50-9a04-e8cbaf143743.json and https://artists.proofprofile.net/proofs/artist/a191a5d2-255f-4b50-9a04-e8cbaf143743.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Escape (Official Theme Song of Dhaka Summer Con 2023)
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 0x49b05aabe9a357a4d8e8468bc7e0b7ff906be6955d398a130629904fdbbb14b4. 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/QZQAY2341963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611bf8a4dfc9a49b35a29d80f12b7ebe0af76b764ecd248e6d7c0926f0bac937. 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/QZHN51902879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1a940716b078805654197266dd8d41176bc522f99e6bc3f4bbf46a2c2e8066. 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/QZHN51902880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b128675a8bcd4f79cd9eed07912bc44c4958da444738a258dabf5ce68d32a77. 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/QZHN51902881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e58a5e1f4a424a1c2b0cff1db589f279e3475f28a775718a69a49224522c6b7. 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/QZHN51902883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153a09deab80ee012a4dddf3c41bf4451d2278d281bdceb09c51a3f062c0a1e9. 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/QZHN51902884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb86e7f8690e799951b06030a9e85e45957bf9876c348404f613debaf85f131a. 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/QZHN51902885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a154b2c3f5d060850fccf4c68fa2b47ccb0cd32a1ab704c0874f4ce53785946. 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/QZHN51902891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceb4b57d58e6b0f515bed4d7cf1b4b384aafd9d443b2aaea15206dfb51ce1cb. 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/QZHN51902892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb2a22f61f6b38bc78ae5e86e880140fcdedf4287da311dfed10789bc3c1f49. 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/QZHN51902893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0236cfb0663a469586d69220dbd1ba97b98c73e960b0b4a00e19c3fa73a892. 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/QZHN51902894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6610083806fd28df578c332f207f2cd4e93825f7423a6772528582923c2c6b43. 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/QZHN51902896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61c0c058acb6d102715557c2af434aa4b78420ab8148689afae2e655df8ba56. 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/QZHN51902898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f56cebc8060a4c7963092fd2d273d00608f66d932a8c1d63e7c61eb60bcc235. 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/QZK6K2490255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6f0daac3deb75cd7f6d8356e9af436d15cafbac88a872a6a44ac2eda46cf16. 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/QZES52351330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5518451125deef6dca1e2e2b4ffdac45502b91a47dd9c0d9b9705fdc1c3e1ff. 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/QZDA82349756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ba3baf057fd35cc4bcbc74942336b80b7231c1a562c66ba991a90505c85be. 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/QZDA72316148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021c03fa974d97f5a7ad0f53f0bc13cbc0883b5df351320ed82f759cad84902b. 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/QZFZ72228447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a6b667023f024c2035ada3bb347817a96da90e546235ef4ae478f63d098a3a. 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/QZHN82388166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2275864562dd0e9717dd9006f6b0045db2126f47b5a836bc9fd339badf0fea9a. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZK6G2324313.