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 0xb058cac255e1f8ee953df2e2f44647efdf43e160cc2303641d94da7c3fafd110. 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/54d00595-c8e6-4773-9221-763501afdbc7.json and https://artists.proofprofile.net/proofs/artist/54d00595-c8e6-4773-9221-763501afdbc7.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 0xf50302fa8be309509650f90ca73d89ffe13f23967c0bcfea08ad352e691d1a51. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GX5MY2339274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0a1e66154c53a7a82b1f276ea0b7e8f57f5c8c7cf83a81c8842268275999a7. 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/GX4R52394588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86e42a7871c961c9c0f2fc6fbf42ac481520e633031178626db733edd88b8c3. 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/GX8LD2330358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e8d15a67ab1672efe9fbdd8611669c0d2ea396b6001a356588286cde0395f9. 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/GX8LD2356475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d51a7f2e6e174062f243f0793214d8a8306627c554149251e3688ee548affac. 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/GX8KD2248746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfcef665c4169681e87602e7841fec2ba1b9be46495aa316ea96eadab7c74d5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX4R52204592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42783c8dbd8d4f2cec651d209ec9cf34c4712ac2300081bcafc5cc011532ff. 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/GX4R52147564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ac79219b26743cb9779f68cbaadaeae41cfb3356d5e20edfdea3ada2a9b65f. 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/GBSMU9467695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9a56da46ce266e472ef25b22d489c04282ff9b61b878796cecc7de483a553f. 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/GBSMU8658782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7db5a14e8f99ed28ffc969fbdaf1295fdebe8dc39dbffcfc27bbfeeb0bde502. 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/QZH5E2042833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcdff943c295aa76c20255e4010ab29f88b9278b9ad89da5882b81768611ec1. 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/GBSMU7611532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0aebf35948dffc63525be5f6f4bfac5ab0a8d38f53bad365fdf81d2466cad7. 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/GBSMU6839109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dbdf3f635032c5dc0da64da18bcbe0744a819f108ccb4cfa15adeb9276e7c5. 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/GBSMU6037409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ccdef6c37f9a91b3630e58a7ff3f4e75cef756fd6747d329a0ef8c9be39d85. 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/QM42K1929660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68815a32c45c028eb19a2dbcd6eb01c352f6373ff9cb65cebe3f30f95c9b5dc1. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QM42K1933854.
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 0xacf1132619c300fa4a9be99c5a55e6b1335ad437ac3fac8456a060c333e86d91. 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/QM42K1912333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e85db9faff355c1e88307384a389d0e7c8301f82e66a3cbb6370aaa5764ed2. 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/GBSMU5929942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d2054a6e25a83fd2fa88974fddb80b7983bad6cb3acacd4bd532b130c9c7d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU6383430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f07a7fd5dd5acba85b84050932ea4f7e95135d13d14e486201174d5e15a493. 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/GBSMU4566095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a6890fe8d6723a8c314be6eeaba230a6794e70f86e0e00c1c5d0bd1d6a074f. 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/GBSMU4563219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989f66e35576939c0ad389a50cd5e9393ebc9cdd12dc613054a70cec219324bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU4369372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccf96b9c20e5ed41d73be749f1bf7754552e181c1fec0934ec48028f7f18ca9. 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/GBSMU4355961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff422f0246faa04ab46cee300b9169b4d96c2f22794436d7e31e72922db044ff. 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/GBSMU4356049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf0ee5c6b633191e8014eac246aa134bfa5f9cc1d4dd00d389dc351322ce895. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU4355976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73029c0b7a42f53ab3592e652e42a01bbea1d749391c43bec711ff8e06820d63. 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/QZDA72415380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcc9ba76c4b75c84d509338803cc87b8554f38ffe93b52308c939764d7d181d. 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/QZDA72415381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb71fca84cc9bb3d7159faf46fe7d7ee4b3730970c64d8288e43669bc98807d9. 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/QZDA72415382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf631db1a5dd850e7692bf81dad3708557fc423003b5c10e9ad28d51d6e7245a0. 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/QZDA72415383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff34012a659d95b7a04fcb9dbc20983c326af603981192b518b96f06b6e157. 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/QZDA72415385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cc98658fd99e47e5bc82d1e6df72ed7012180778f360c08bf22112ec639e5d. 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/GX4R52333528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e430877b72ddb10ea335647a7937b48df23c8f386e269d51c7f2140b9835f32. 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/GX4R52369274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1ce9bec401e26421c69ad0eefa672e818a2a8b84a38ff4ad0f8991bb58a249. 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/GX89G2256087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0660cd0690f9b523f993546c3e52f48ce9734bff900189f5340431558c92a8. 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/QM42K2530402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa4e7952319cdaec99621a1c9641fcb72b96464957177f6dc0b55ce8fc49ae4. 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/QZDA82078183.