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 0xc38ce9da0a32975d19ea7939fa46f69db8e3f3786183da60374f26a05651eb65. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb1e4023-4ab5-4e66-8790-8d57107a5c5d.json and https://artists.proofprofile.net/proofs/artist/bb1e4023-4ab5-4e66-8790-8d57107a5c5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mare A Mare - Sequenza Version (Irène Drésel Remix)
Mare A Mare - Sequenza Version - Irène Drésel Remix
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 0xef5b2dcacbff42a4c75419afd1452bca06abff8928effd8a6b6f6b72fc2869de. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:37:19Z), 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/FR9W12228693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24019b06ccbc5750e4c3302a47e2ca99f4a37fd75bdec100af24b0efed2fbeb0. 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/FR9W12115608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc083b75c20c9ce5a73945e570cf98684a8e9ca888c4e4135f52669ad9a3e9c58. 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/FR9W12115871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a79d6e0f93fd4c17e9d82ecaadff8b49af6225daf34cd5c4dc67a81e1e67a25. 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/FR9W12115603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf813826aff3cfe6e334af463223f957d61d69620671c16952f561fe5ee06cf. 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/FR9W12115609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1e3d38f082623bd18b19af46d41e414414b75d4a32e21ab47c68565920a09. 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/FR9W12115604.
White Circle Canteen - Krikor Drumapella Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4f0eadea085028e79345cbbcaf9d5c257aa0afe612a3c0e8515e8011c53a89. 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/FR9W12211948.
The Dawn - Sequenza Version - Pional Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981cf469b9d410cd77bcabb7e91fec3944587048b52d42fd9cc39a8203153f69. 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/FR9W12211949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bdb5af249521c336696d8840192f908a6e88c148fd00d2e6816fdd269beabe. 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/FR9W12217246.
Mare A Mare - Sequenza Version - Donato Dozzy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64d73c1020c52fd53be5f93e7d5f2b3d39f8f9625977431c9660f9743a5fffe. 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/FR9W12222516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5b2dcacbff42a4c75419afd1452bca06abff8928effd8a6b6f6b72fc2869de. 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/FR9W12228693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24019b06ccbc5750e4c3302a47e2ca99f4a37fd75bdec100af24b0efed2fbeb0. 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/FR9W12115608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc083b75c20c9ce5a73945e570cf98684a8e9ca888c4e4135f52669ad9a3e9c58. 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/FR9W12115871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a79d6e0f93fd4c17e9d82ecaadff8b49af6225daf34cd5c4dc67a81e1e67a25. 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/FR9W12115603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf813826aff3cfe6e334af463223f957d61d69620671c16952f561fe5ee06cf. 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/FR9W12115609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f90fd5dcd31ea07be301392741837aea539f142ec1a5913f9bf26442797958. 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/FR9W11930714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1e3d38f082623bd18b19af46d41e414414b75d4a32e21ab47c68565920a09. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12115604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bdb5af249521c336696d8840192f908a6e88c148fd00d2e6816fdd269beabe. 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/FR9W12217246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc083b75c20c9ce5a73945e570cf98684a8e9ca888c4e4135f52669ad9a3e9c58. 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/FR9W12115871.