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 0xbb087eb247c15d1be1eaeeba69474c9f8dcd38f3e3727d42adaf5b586524f289. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c366bb84-b0ae-4a2e-9a92-c767202f4ecc.json and https://artists.proofprofile.net/proofs/artist/c366bb84-b0ae-4a2e-9a92-c767202f4ecc.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 0xaee35df4ce06f872e9198955d0f7819a90e91741f6bfac0d88f4bb3a775be82e. 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/NOFLL0610030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6da3f6cc7cddc80e280ae7200fc4e591f88e22b4bf11247b20b27d595ce3c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NOFLL0610040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be5e2b2a569bb4436005487d5182acd5dd2d98d5fd42f6436c281a73b734c4f. 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/NOFLL0610060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a545fac3767dc9971a2fec34ac1d65408e1fd7f2e34921de1036884c5d44fe. 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/NOFLL0610080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8775a87a21026fb3b5763b5640bc8676f044eb434ef4ef54d501f820ba28c05e. 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/NOFLL0610100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8dc41328cd27929ad0fce9f58c21a0eea263024d36617c26634d52a4021bb7. 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/NOFLL0610070.
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 0x43b7831d1a6432eef7aa80f58375314b56088c34aec2ed5e13b20a850d347ec9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/NOFLL9705010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e37dfa895f845380542a4a37474bced5e3d4f98800f8dbb3e3cd3d50f57c450. 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/NOFLL9705050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cffc6acd15620ca3a627b710395679c8b7f0e9afe39d781a6450925d5802aac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:48:59Z), 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/NOFLL9705060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0932af6e7ef90079787477a2147544e5baaeaf1dd323de6e041c73bea38278ee. 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/NOFLL9705130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5845e64ca26081de7aa663bdd9213423e9f3bc86798b9b0510af4c7f48a0f. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/NOFLL9705020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba528a0decfbf620090525e07b268bc74bb84ce171a1925a4fcc83cb9946a9c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NOFLL9705030.
All to Jesus/Alt for Jesu Fot Jeg Legger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239970a9a2b5f1c0029c0ece506fb2d8dc3d59a6ab84c48a5933d8f8fa3b743e. 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/NOFLL9705040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa377a4997349bc8add66b2d676911cd8cc4156a9b2c466cfdb89f7475e825ba8. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NOFLL9705070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae5f60f7219899cbfc567cc10d4bf7e3230031fdaaa6770a876cf58cc0ec6be. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NOFLL9705080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769b087b6a5b12847f448d182b406a24e773dd1a21356cc8c4c584cb1fced2e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NOFLL9705090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471b80e6f03a221169f7e4bab96d07b4e625486b56809609fb3b8c1061adae3a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NOFLL9705100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332286f5f30ce84f17ab932cb02360d1bd8d50e8c58a313a1f4ad67df7f0613. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NOFLL9705120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2219d21e5147f2ce8e067df70a52f77c3481063dbb1015a1e63e9df65b7f7f3b. 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/NOFLL0406180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23032ea95a3a9bc6bb6b52c9f062a794b45226ef3adcdfdbc62a0e1c93f436d. 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/NOFLL0406210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c73c7d50e08c571de4b49322b9314bb514e346d0b6fc838fd3d1b130257ca0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:03:03Z), 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/NOFLL0406070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3aad0bf7b1ccb715c0f56bdc2ce66ffe74b1580c2a700711716952910dc866. 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/NOFLL0406090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f690796ca00debc6c2c53c7245b453b9d686fe2e8f84d077a169317831b8446. 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/NOFLL0406110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff275311372c6e926a007b6accc97e68f181edfe915d5ae74d36126054d5a39. 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/NOFLL0406120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc1c6dd66cc1df7a0e717ea96bacd74131f06bf346cdf1daecd79a13370a6e. 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/NOFLL0406140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1b0b211965646d33a7cfcdfa2b28b71cad223f081d0c61022f6995bd174c25. 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/NOFLL0406290.