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 0x2833918e01c034cccef8eb15c6b17a62d42a3cbbbc5ab236b672fdf3e7e082f9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82d95590-5c23-4751-9579-bb251e0ec055.json and https://artists.proofprofile.net/proofs/artist/82d95590-5c23-4751-9579-bb251e0ec055.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 0x73458c915252b5c25821a2cebcf1c904658a9fb6d7d357e15013a46a9f35321b. 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/DEWG81800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d478dc927b2cd88cdb3e70943dc806850d2f0f789eab8253d7565c7e7d33abd. 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/DEWG81800238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22534aee6879a823f903241ba18c4409e2b16747b4b2964585d61a4e9d7c1fa2. 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/DEWG81800242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba20c8c3b15e26136bc15da463e7e3625595c1dfebaf5ca8d5c0b57f0775a19. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEZ901600456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590750d7c170e603e8a0d03675860f8a3c4e5cfb1cff4f783dc758af4bdd6e5f. 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/DEZ901600457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fec821a9d0660e46f7d6b4a904bd246694802a2e9c9a050f63d9adc1c2bbdc6. 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/DEZ901600458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d906e9dfc7cee9f951b9e440ce9e6e11ef0b184da1eeb44a3fc0027e6d14fde. 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/DEZ901600459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a1865f300bb767fab52736070a3a2d16b8ac6fb2f7213fc3ce6cef64f0e0e5. 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/DEZ901600460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc45376adfa73b691bd86a348bc453c013ca0cb0e2713851c8cf26f11d265f6b. 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/DEZ901600461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914b2d31d52f554451ba4b6cc99d38d2979a477c2f179d4e6457d76915627c48. 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/DEZ901600462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b752d4f351f579cf4b041f0992ede07d6ee2b278497b0278f762019d8c4c139. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEZ901600466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a5e8bdd686ae21a7beb296b8a59065956c95fef9db6a437d6a307d857c5aa0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEZ901600468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc351cac7bc105c6f3eb686589a2ec4a1323c5222072458b65c269b11b3dab377. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/DEZ901600469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b12dd5d702b93cdac7a4c3fef93975582e2a75421dd363a81de36ac1f4dcf89. 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/TCACH1567986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c5541e556fc8f1e705a59ef8e75ed916cf7e22ba0c88b482f490ec898e2d1f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCACH1558900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ae664d4534bbe7c97a62c90c355958e5651e6871806eddcfc1c675c7731b26. 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/TCABY1411310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f248d910e14c4d1ecee6e3ae9e351c51882f0e717021d3c5d24471d576f956. 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/TCACH1567982.
Terror Night Vol. 2 Sounds of the Dead Future
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee422e042dd4bab04517bbb74e5d0ededcb2d653f4aa5ee66d4759220623c2c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/RUC001600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7067281e5732fe080a97dda40673729ff52fd08c2f87f728aed73d15067fff50. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/RUC001600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4700763c301dbebae130496ac122f9d1cc65822b27c4f03ead480feb8a9a19c5. 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/RUC001600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443f3222e7f82173a06379f3b093685133c1616381b6635b015682014ac5d672. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCAHC2324432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6c983f9d3a2a1862f9ec976ecf2afec739628a0618129c6cf6e102fe3e363e. 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/TCAEN1931367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a11bf36a5ebcbde0ce540ba488d184ad0d13b6ba38ff609d34acfd8188171e. 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/TCAEN1931379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad7334c47f8d2b54c19cbbc9c2c746b8ea846c93f6cb4d92993555bbc41edc. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCACT1668716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc5cc625b911e113c7058c99964a73020069cdaa80a328469908568b91ea7e8. 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/DEKV21802274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86101ed8fc279b3c14004ff7dc24b3da3135a6343442c529982b8229a8838a9. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEKV21802315.
Ultra > Angel (A Tribute To Depeche Mode)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d649ad2490c95d200f031214bfb3f44ff62ea20f790745c48f4ae64e06fa4f4. 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/QZ22B1807019.
Apop We Love You (A Tribute To Apoptygma Berzerk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1c7abe9b1aa6a68c69a4afe57ed257fdf38c6833675d4be03cfeb76119ddda. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEKV21801441.