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 0x75e8c224c53682d2e73f38d8f1c7f44eb49d477e03313da00542c76325b74b15. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e87a31d0-a20d-4a6d-8aeb-d05945f3da60.json and https://artists.proofprofile.net/proofs/artist/e87a31d0-a20d-4a6d-8aeb-d05945f3da60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"Joseph And The Amazing Technicolor Dreamcoat" 1993 Los Angeles Cast
Joseph And The Amazing Technicolor Dreamcoat (1993 Los Angeles Cast Recording)
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 0xa3aad4e29628d93516938690524953198c3f09e83046a6f66538590abd66ab5c. 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/GBUM71704256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa65e017f67ff86d0276729555464ea4464c6937d64ec0236880d7fec5faa28. 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/GBUM71704257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aedf2da48e01bec77b50c8bc2c70bbb11dbd4499fa13442d85ca799c5989e8d. 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/GBUM71704258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cd755610711da1ad8135931b643af2d3a524033c2908f54ebc1f48c1a27a0e. 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/GBUM71704260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ac389ab71513dd70b5070a4e305acab32aa76f12f7f470644e857a10b6f6d3. 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/GBUM71704262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82185bafa58df4aca8b45f1388fae198e503a614a82b714bf4af2476682f743. 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/GBUM71704263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103a9fd4756ca6daee02ba733f54efba2bdda4b196de164795d3d9a4d5e8569. 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/GBUM71704264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815f2103d9eafcc179922194ef204ad658967cd51dcf03bed672e410b426be81. 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/GBUM71704265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68490d7764bcf47ccf5b76ac7247665dcac1de4cd47d051fd8b3c2e8a00189bd. 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/GBUM71704365.
The Brothers Come To Egypt / Grovel, Grovel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d2689c7d4da9cf75ff59112625068a8fcd750a3813c50348b8653cc59a89ab. 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/GBUM71704370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa8dfad6281b72fe7fd25a23637acf1c082352d4c5b8d73574e04214acf0492. 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/GBUM71704371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dcf922ddc073313a47547eba0cde6a789875344caeb57b3d221433d4d96894. 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/GBUM71704373.
Finale: Any Dream Will Do / Give Me My Colored Coat - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3520c916e3b25ef54e0e1ade145e87575b20e744b9d7dd4ce7721a71cfe621. 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/GBUM71704375.
Sondheim Unplugged (The NYC Sessions), Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c19378b7f9c838b834f5e6265202354359a571a2e444437653ae01ba1433d75. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TCAGK2279396.
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
Sondheim Unplugged (The NYC Sessions), Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf329820c9c1b07f9e5a31b0385f8bb9e610c992c9c20785a423d89040dee92d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US6W62119831.