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 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 0x0dc9c5e7cb1b891ec2a8f20465789d871e3962c5ca34f05d5654b5c5d24a91b5. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee103a2d-811e-4d0a-83c3-7d33dad6203f.json and https://artists.proofprofile.net/proofs/artist/ee103a2d-811e-4d0a-83c3-7d33dad6203f.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 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 0xc772ceaedf87dffeb1d4585f769e7cd7630da2ba46d1754fdb91777901483a58. 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/SE5751852759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f98a63e3a72a3fa7ba1a32109e7c537449f25f08b96d86a8b3e5c5b4830269. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZNWW2245709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35752be3c691f66622dff3018b26051d008edffd2e0236e0e924d9797cd07f8f. 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/QZPLR2239082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6364969cdc2d6db26110fea92cbbdb160362daa2843e1555498d9fc84648ab83. 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/QZNWW2284899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee6a81ab5ce574d6c6b3bff41c2522b3163c012c4ade39c7b3e1d14f856d616. 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/QZTAX2290164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc772ceaedf87dffeb1d4585f769e7cd7630da2ba46d1754fdb91777901483a58. 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/SE5751852759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35752be3c691f66622dff3018b26051d008edffd2e0236e0e924d9797cd07f8f. 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/QZPLR2239082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee6a81ab5ce574d6c6b3bff41c2522b3163c012c4ade39c7b3e1d14f856d616. 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/QZTAX2290164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c6f85613aa63e953611e7aa4dcfee12c63641e2f089aa4c41322458e95ee67. 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/SE6XW2257903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91072f2b31664a6c2308a0f28bce4d48f053103432a16fdde0a954e1814959ed. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWY2486409.
Spooky Scary Sunday (Jersey Club Samurai Edition)
Spooky Scary Sunday - Jersey Club Samurai Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb964209b21899a65c84907cb9edef2795c78b659bc1a83f4fe66ae01e1dbd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBA2460762.
Spooky Scary Sunday, Pt. 2 (Jersey Club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b23c08a28a3cfdfd0c9608abcd7beae0eeddf151fdeae7c91b40a86e5dfb18. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZMEP2509912.
Spooky Scary Sunday (Jersey Club): Shogun Edition