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 0x57bb78bd89657d18bf84dea023957c72efdab507cd9f6dde9b689f6d6270a6fe. 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/ca30dc60-1c71-4f90-91a0-1b8e933ebd05.json and https://artists.proofprofile.net/proofs/artist/ca30dc60-1c71-4f90-91a0-1b8e933ebd05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concert In Athens (Live In Athens / 2010)
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 0x3ddf54d29ea1be4c8469f58ea70cffcd06c48835423e124884a474e8d294f276. 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/DEB331022001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abacdbbfa221e9255567de8af9f9ac872a6da06a20ff545128ce2d0aa64f54. 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/DEB331022003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8d101a5915e4da88a199e966e4a5cbe6203102598faec0cad65cf0eca0a73. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEB331022005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59dc6a8e43f982e669feb8c06892195acad5bc5581df1aad59e9d1432cbee57. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEB331022006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a5e5c821cfe26438021f527f3acf4c48d994f03dfb23651a38856379170106. 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/DEB331022007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7e0517fb726c5991f9ea27b92b602482258887ba982aa9825624ea60621fe2. 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/DEB331022008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb24d30bc2b8f085afadd7c4f99665c39a53920e37d05606356f64c02b4084fb. 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/DEB331022009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d11f9e7c4af0ffd8aa6c3993b62de9cba026c1966c6b1e6113287a10b0f894. 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/DEB331022010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e2867c6fe602e6cd01f5c50d2fc08a76e924846c271a60443b81a74c526e07. 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/DEB331022012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de30a4b40d2f3351019db86ebfccc5411460090b40ac8fdd59e5ae571efbbbb. 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/DEB331022014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc255f3698425cfa3ae233dc2fa5ebaaf061b508765ddaca9273233ec20943a05. 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/DEB331022015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98744bc8d49c5f20babd7300add174dd9c6b524c9082ff21f2efb696b47084. 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/DEB331022016.
Ulysses' Gaze / 10. Ulysses' Gaze - Woman's Theme / Ulysses' Theme / Lento / Largo / Dance: Dance - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1af9c28031f6a450a7eab2441e7a30810e7d081abc56c57910dc950804d0cc. 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/DEB331022017.
Karaindrou: Voyage To Cythera: Voyage - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8d101a5915e4da88a199e966e4a5cbe6203102598faec0cad65cf0eca0a73. 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/DEB331022005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abacdbbfa221e9255567de8af9f9ac872a6da06a20ff545128ce2d0aa64f54. 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/DEB331022003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59dc6a8e43f982e669feb8c06892195acad5bc5581df1aad59e9d1432cbee57. 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/DEB331022006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a5e5c821cfe26438021f527f3acf4c48d994f03dfb23651a38856379170106. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB331022007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7e0517fb726c5991f9ea27b92b602482258887ba982aa9825624ea60621fe2. 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/DEB331022008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39170500059bfb938736f70de6fee1671b05c7ab1f2c39613955e8bc1c565d2. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/DEB331022013.
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 0x7881e34010bb85412ef30203ea421642646df4eea92f04d7bf8ea0d1882d585c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEB331022018.