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 0xa10e41d651c70a47fcc543a3ffc115de5c120c3df79f14783d973bb9ba2474b5. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fe90d4d-01b3-4ab1-a720-c3dd0a777ed3.json and https://artists.proofprofile.net/proofs/artist/7fe90d4d-01b3-4ab1-a720-c3dd0a777ed3.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 0xe12594bfe58458202a235fe03be5838cf13cf4c37a03b42b1f9ff6c307b56ecf. 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/ITI022000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722c543614248e2042eba26649c5e2b2c2579711c6756f6e5d1c8331a3451dc4. 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/ITI029800342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf705e5e4ab44c99325ac5b7b458b96b6de358aebac8382818412cafb4903ba3a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITI029800111.
Don't Let The Flies Eat Your Marilyn's Painting
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf425a650fa1ad22e910bdc05c63a8d0ce11b7ec6142e48f2f28aad0cf8f5c645. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITI022300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d27c6ee09f55ee2bae6c23fcbf74b935c43f59d95ad646bc06c0779c428843. 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/ITI022100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf663df6385988a7af741bd0a0a6a7ff6bfedbb7b07a10f9c5f03cdf0047ddb. 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/ITI022300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feb96eb9f2576a12f693ce6ceca70e3471b935a7e99e72dabf3866ed50b2358. 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/ITI022100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6abae97cc6e374179a392b7fa0982cd80cdfa60fafca6b199fce1104e19170. 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/ITI022300751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa221b9a4d9d1b820df75dce52c2a9dc4edafe1b350e6111de844821f161a6a5. 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/ITI022300674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe5e6e4b88fc607a5a27782a2911b1746faa1e82bc3995c7718d700154c12f5. 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/ITI022400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0844ef6420ed0fcb8ae140750a199c69060e7e2e7acb041d53c342a334a46a1. 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/ITI029800318.
It's a Groovy Thing! Vol. 4 (The Amazing Jazz Funk Instrumental Sound)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec2f4b7e6cd5c5de0276b4cb8ed07019989a2f24c860adf6c0194b0146658d6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITI022100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ae4500b4e583a2e0728f17696d0edee8b2235d61403f4dc024f39ff540a04. 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/ITQ952200582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b68b28701bccc63fb3f983861e5997e64f361b40e96a51bda1f176de974256e. 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/ITKM32300060.
Mondo Groove (The New Italian Funky Scene)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83aa6dc6f40895897d6616f7d5f3ffab4ba67a32b9d856bf6e8614d87f061436. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITI022400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ad240417abfdad43fa86c0e1445e1b9e553ea35fae13a57fcd5956ce56c621. 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/ITI022300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff07244dacf48001f466bdbc61702c7ce30b307250f8efe901052c2cba2b2f8. 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/ITI022300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e861edf32f7ae69c6f44d6041e38a28900e997afa8c1e49a12da7b084e1cf. 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/ITI022400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7998dbc7152782414bbc1f4cde6c3d46e7092144b82a721784b99cffe83de0d4. 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/ITI022300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3e37b0e5051a35958e1173a0f0b048fc555ce221e619ae33ef532af3b0d69d. 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/ITI022300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd816f2b4b5ecf5e62e92f2cee3c232954f6585b31d31b60a8aeefe2eb2fba5a9. 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/ITI022400168.
Don't Let The System Get You Down - Regrooved Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d6d46a8c61be320e9fbf914040a76d4f3ac00746185493adec68a06ce85a4. 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/ITI022400000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38793642bf74b74417f380982552f831d69aae35668f4543a868756f8800319. 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/ITI022300587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafecd341ce43a45b596d2011e2ca35a05ebf3c7fa5b1ee20ec790cc38c48a682. 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/ITI022400434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c78e544008a841e31cb4f3667b389d73f7d2c34595fb1a0a7629a8530e121a. 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/ITI022300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf425a650fa1ad22e910bdc05c63a8d0ce11b7ec6142e48f2f28aad0cf8f5c645. 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/ITI022300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867ad12b6806bcb3163e366e90a31745d9497c87905b27dc91f3542b8eb6c64b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITI022300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7998dbc7152782414bbc1f4cde6c3d46e7092144b82a721784b99cffe83de0d4. 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/ITI022300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed71c52dfeeb2b3d843c855b77b42e4228eda531425bdb1fe95e3c1eaee35e1. 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/ITI022300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b82f42ea4a3faa773662d6c7cc098e0c718456ab6e142076de099a800669d32. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITI022300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c78e544008a841e31cb4f3667b389d73f7d2c34595fb1a0a7629a8530e121a. 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/ITI022300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff07244dacf48001f466bdbc61702c7ce30b307250f8efe901052c2cba2b2f8. 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/ITI022300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b1909120f50042c94ce4b75495e7a046440689e5c3c7cb2ad2c2ef7b42bee8. 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/ITI022300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e17cfdb8cf175ec3ae33298fe966a79757a75299e6b19981fd6e28416900bf. 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/ITI022000569.