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 0x3b2fbd14b11324063d9787796b1f99b494ad2a26d790340aab0e747fe9ed7a74. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d95bd66d-4e47-478e-8f10-938d0146d5d8.json and https://artists.proofprofile.net/proofs/artist/d95bd66d-4e47-478e-8f10-938d0146d5d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
HALLOW'S EVE Vol. 1: A Marvelously Ghoulish Collection of Fiendish Delight and Spine-Chilling Fright
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 0xcdb5bde015b5b54e27b2156e7afc27b16ca232dcd03d19e22541bc31e27c9f89. 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/QZTB32396223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103432bd133b63919ce069d5d22d86ff4ac097ddc5055cc30f6fceddba92b5d2. 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/QZHN72353393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcef98c039d4c322b05e10d507d7e6d5bb2a33bd28c6ac639bb2fd9c0f129ba. 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/QZHN72353396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745dca3dedf033aa4fcb1d367e084e82505b82df054a7e964306442350268597. 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/QZHN72353397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d119cffc03b021dd569948ce58e4fbccd07b0a04986fedd1dc426d7f189ec7c. 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/QZHN72353398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb537cc9f98dd6322bc264aa4c796e59d0891d898180a320b6bf9ac02f46bf848. 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/QZHN72353399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237c4e3969ca8aa5e9a35c7fa66495b247235a57cc2da412c912e80ee2199839. 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/QZTB92481241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f405b98393e73c59fb5efa934fd4f2ee7124a386c1923e0a95b838b54d428e. 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/QZNWY2456895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d4fe5d3c943b13352cab6d56e4c24530d0849d93bec568c7d0d3d0574022f2. 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/QM42K2304669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce3c6f77bd4517051759cfefe275185e3859405b55587ba5c683c925df2a214. 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/QZFYZ2420479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea7949f27fda97a339b4021e7492ad9670270d1188dbd2cf64bcf24db7370af. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFYZ2420480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4134e1552b10a3c6f111062af2b231fabf61000a0f663240ba619554c5a8992d. 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/QZFYZ2420481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4d629bd8911fd2569194676b53755060917af2f5ed740c11925c3cfd01100b. 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/QZES62300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b264bab010509bfe4899b152eed5891ab50518b837809153cadb7b42a650bf. 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/QZK6F2294432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee4210f970e1fe7b9f36d166be640166b03f1c9e2134d6cd45c8e241ec225a6. 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/QZK6F2294434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa565230cb194a3f137dd5b164ede9a2b80a0f8230e2a466566303e725d305a41. 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/QZK6F2294437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93197bea8702d0839bcd5e8bd18c9d6d74183ef3b03f3b200eb56f7c7c54755. 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/QZK6F2294440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1adc10addacc9ecd8f60decc8e97b53ed7d77bad494294e816645423168bc. 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/QZK6F2294441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4098c9b59d076b8df6c4bf6cd921f86f89551a95cbaefd0407b158f207bba3ad. 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/QZK6F2294442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde670ff245da804969c65729aa8a45ed7f7719c067f10b7438f1fb30f3a464c4. 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/QZZ7V2415657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af1df84738a74b5a6da69b2c04be73f773426ef6e04656f48ac5d299972fd6. 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/QZZ7P2491996.
HALLOW'S EVE Vol. 2: Gloom & Doom Party in My Room
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d57a2ff31d5657e08bb12ebbb5038f5c0ee854059c4823aa231db905163c93. 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/QZWFJ2465329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a60396a7a8d8ffc977fa7d8d52604e5977a423e7ec31fa76266f21a6bd3bdd. 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/QZWFJ2465332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827436088922ee630448ff91d3668e07e9218b06f48d80c32a002084f4a21cc. 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/QZWFJ2465333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe334c810519b75677c253350d14b7056eb8e665f008e0f74be44a2d9a3ffd718. 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/QZVEM2554915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1af55ff16b2363e8ad151576890a7c02bf304bedf7544148646067a971fccc0. 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/QZVEM2554920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f9f127fb66ad3d5049a8b55abdc579f56fbbeadd2c2786ff5a0fde15f86657. 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/QZVEM2554924.