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 0x23874b0019d7f1e222dd4fd7314b24ca24cb8b66f9becddb7bfbaef047a962b7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97445799-be4d-4b49-94bd-c09b29b2d186.json and https://artists.proofprofile.net/proofs/artist/97445799-be4d-4b49-94bd-c09b29b2d186.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 0xfa337458f5be2aca7fd6948d19d4108cfcede85115448ea74c690db28846acbc. 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/QZTB92207620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1938d6621743088204f49d29152f49a6cb4b115ac3ac129fdb20c16e0d61c62. 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/QZTB92207621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8487b1f45c313e89278d2070e8424bdd4bd3c9656b62249b68bccedfa6c4610. 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/QZTB92207622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e9c87c26f2412d0e75486283d28ebd747e7e16a5e4ffe8ea18ed737a00e6b6. 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/QZTB92207623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32599de27ce3fd5bcdee6d9851dae1c8128c2e60fcf4a4ac29daf816042c1a8. 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/QZTB92207624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6500be3583dd1cc850df17d0872475b570eea9e728a8e18c7657144855121f04. 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/QZTB92207625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0201ad7957c9faa407e8ca8f899ec47d6361e948733ec710a36abdb34b522160. 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/QZTB92207626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4766470b1c06c9d29681d506445e05f9108fe56a43ba26c6aab557782d55a134. 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/QZTB92207627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe53bfe59c2e394ae9ed0215d5b940eb61200aded1d1a0d6ad58c656c7d2df66. 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/QZTB92207628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca255d34cbd2f3af336f7668c9086576c4dfa58e95e20485638963d63ee3e29. 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/QZTB92207629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e0af88ae7214282a73d25d57a2ba10a431b34ce215d44cd7a96422c43536d3. 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/QZTB92207630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2feb2977bfa579d696a044a30c8428920054fb8fba88d13eab219bc2c4717d. 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/QZTB92236793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6257fc3d06cf61d74cd34bf36559843d5061ea0ea4b26545972841f39804a670. 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/QZK6F2351033.
Everybody Loves the Sunshine - Chill Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43559e0578f3d87443a3035a300cfbfa60faafb3899de063b3382cac81c4ae17. 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/QZK6J2341720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187a1fe7584cd8b91b96469b0f32a58efcc47460bcdd4f30c9d6b3af65aed37. 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/QZK6F2351035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fc22b2d61fc6a8d64ca98400e3b9e9b64acb507f2e22c1152213c4f80720a7. 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/QZK6F2351036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1202a58ed0243c359ff2eac828f406ea460c1986a2512506de4f9c9b557f5d4d. 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/QZK6F2351037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a133e3c92c035c2394cf3cca59104eb959b0e081ac78816156856a8e497f60. 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/QZK6F2351038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73080d6746eaf03c0f735db2d788f00d026e82085a189ab698ce747afb30f9d. 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/QZK6F2351039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8088113948e64a4559e34d0ac0e200b1a0867220a8bbaf1aa284f3656bd76940. 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/QZHN52437500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a108034d3131c106ffe722ed537975ed7876256838986901efe52f0cc2b559. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6H2452429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ef41bcac50afcd2e6e55341e0706f26dab22eb6510f1e39193c5ae341e2460. 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/QZDA42405312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04295fee82c18d915d9ed66b9dbf02d131539fbb34c1d39c80335d4c6021e60. 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/QZK6H2452430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d738bda987b3c4de9226a3e143ac139dbbd86e0db4be1b1fcf2d978cb0eac5. 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/QZK6H2452431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8088113948e64a4559e34d0ac0e200b1a0867220a8bbaf1aa284f3656bd76940. 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/QZHN52437500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9c6227adf60d62d8c7449e1a86eed68b529b81286b58470782cd9c30a40ecb. 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/QZNWV2240971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6a913d0b232fb3b880c975613f20b5dd20c674d20a2fc316aca56a834590b2. 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/QZRP52253909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3250c6b0dd33f1952ee5743b660a9218b0a2c7142800c0092e670c4a8ff8e3. 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/QZRP52253910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5c2a3384f35d14dbb06e26fb1fda415a371dbe0ec6f7c9dff69654ba79d564. 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/QZRP52253911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94dee546ae4277b299121458ecca43483e4d9c92a8930e90d52a2d701628121. 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/QZRP52253912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5a3c547b8856a878cd1f98fd6eb8c71428e872c22bb29a624dd383169ddd03. 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/QZRP52253913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9c6227adf60d62d8c7449e1a86eed68b529b81286b58470782cd9c30a40ecb. 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/QZNWV2240971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ae28fb7836a14549a1ac6737cdbe36a89613ab947a2652e45672d28af7e180. 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/QZFZ42276279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147392a4481335b224ff5e575b0ea0c348f46edd33f18773c3e977fc4c3766db. 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/QZNWZ2174804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7bb586c3ed5be8e5c8fcc36ab0d8dcae68063bd458974ab53aaa9d65150d1d. 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/QZTB82484992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f85e43f43cc0c2d6b93e4ff770ba465b7e7a58fd40c8a5a6591010c57e1e4e. 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/QZTBF2327686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638e0ee17a4f3926b1e82c698d650fcd76e6357e64d0d49bfd4a61b1cecff97. 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/QZFYY2313207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb71372a208f4995f873315f066b9329ee5be90a599066a9f83682845dde023. 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/QZDA82529088.