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 0x2ca49f69f8deea70625f5f6b2a7488046c78e36b3be746d4e0b7e5a427d65ac3. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16c3ee93-6de1-48df-8359-0d2996c2e650.json and https://artists.proofprofile.net/proofs/artist/16c3ee93-6de1-48df-8359-0d2996c2e650.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 0xdf69de74a3b952f3efa95959c4122d15b1f0b88e8e70e8bba58017beb52882da. 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/SEYFX2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7271ca86a4e7aa4f07542190feee1c91e75ff36081ccde9d602eebf70fb4c37. 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/SEYFX2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947265fa8e88f8dc0e444024a445a678a89bc2d3bfec57d8966a52278764d66d. 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/SEYFX2300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920ee5cfecca1799a9c1192430a4fbb9b3854d4b86dc8e03d9967a2fa05534fe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEYFX1900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166679fd01a11c1326aac621c4b3d094216590ff6aca09a7bfe894acef92836. 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/SEYFX1900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198582f676b4de464f878cd3f4c52a03afeb426003d27e7d69744364262f2a51. 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/SEYFX1800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25fd28a3f02a1e2a25f4203af9f85395584b4cbdbee97be83aebf727be0ec24. 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/SEYFX1601202.
PROCD100 - A Progress Productions Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d153893ea9d502a0f12ccb8761e8930989e281463931eab1e1e8e9135d9efba. 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/SEYFX2000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a71768f947ac24e6d68e44953dd3be3040257ef87ae2d7773ecd5ab75f8b1c. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/SEYFX2000726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c453836e6c98dba3eb2f5a2136e0149543f7917ccfaae04f290c2573839789c. 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/SEYFX2000716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ac3434d83dd023dd012e2324facb7e2202bb841ff10f0bc2ca3bbaf6e3fb1. 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/SEYFX2000723.
Progress Productions 20th Years Anniversary Compilation 2004-2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f4b0e41ed6304e448a35bae3d9012bce7f9474d714ff467c02e6733c4cacd0. 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/SEYFX2400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa279cbdd304133cada51ee5b701cbd9a3f69a9cb3111ffd311f2a95c3dc03b10. 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/SEYFX2400916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224d70d56258157f52a882014a0e001f40e350c0588c8b689c46a3c9ffce910f. 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/SEYFX2400917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825f6fb1c7f45769aa733c8457ed64a2a9c9642be2a10a4e5f34f18983b97fcb. 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/SEYFX2400907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe275143a86d9255101e234d56d835e24bcad55217fd99de2b8d450b816f22c1e. 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/SEYFX2400914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bf9434dc3ad6ab14756819311665c85998174c7124cfecf51b790465759d91. 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/SEYFX2500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eefd9a4c34a592137f42dfd79a86453d117b5081e622f6b25847245174f6f0a. 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/SEYFX2500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52239cd215b24a45ee27ac84e72233695faca5ec7619758d5c6a7d7fc3b05363. 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/SEYFX2500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc160af7427172da03e3caa2875e808da0af0b94e4842598804ccba6beee9c0bc. 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/SEYFX2500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93db55c2b6f2759042bed2ae6c33f0104669bfa5e50f86e30fa503f9e484ec0f. 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/SEYFX2500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d790ea1df4894fd347ae4fa57dbfdcb29da5ddb58a510f412fe9712010f40f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEYFX2400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47aefd00877989229e4ff9807bf9c41a1d56a81ba6ee66e33405ed213b9a696. 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/SEYFX2500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1f878fe7dc89cba2ea0bcdffe1fcfb8e2388598cd8b1600b3c61dd72e3b451. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEYFX2500309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73986bab54f0027893445d8a728654445326497a6b7908f914c7afb0f7f64dd. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SEYFX2500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd27f525ea551a955e8232ef0290752133c1a46170e7cd1c9a20c3c0d716528. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEYFX2500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bf9434dc3ad6ab14756819311665c85998174c7124cfecf51b790465759d91. 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/SEYFX2500301.