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 0xee52fe844d4456f9624424314aaea86e4ba38a3e8c6f11aa728a84a4cbf5bcb5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b6a0bef-866a-4426-b096-ee88fd923fe3.json and https://artists.proofprofile.net/proofs/artist/8b6a0bef-866a-4426-b096-ee88fd923fe3.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 0x33f42abfb131ec16ee084475d17fd498d028a95723b3b7f413562f218f774831. 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/FR2X42077218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b43b94f90ee66fdefb22fa71aff66c3dbb985f56f073912451bb1498ae742d. 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/FR2X42077219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1450cd4e96da648bc7b579382fba976413ee23778e25f237c818cd56b25062. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FR2X42077220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65e839456e26e52e0b35826283894f1e2bee30f5f893b550755bcf7a6f6edcb. 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/FR2X42077221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b793da021bb3cdd4022fa3c53ae14b0b70593e55d7e2404f36a68eb56a77a6. 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/FR2X42077222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5bc4385fafe3fe62efcc925a62e576f67414a850b193415fe4e237ae4afdcb. 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/FR2X42077223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c60d3bb86216bcd40cb648ef4e6fa4d693afab3e867709ca10c5d256126258c. 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/FR2X42077224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b19ab2b11d1cd5176c7c0baa7a06b43591d958b165759c6238ee08eb598757c. 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/FR2X42077225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b933ba97bc54c7f11cb5de24708311545cae24f49b3f1f63809a1f32cc10f3. 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/FR2X42077226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eefc780c5a181dc81c13fc7739efee44b59486b0dd6d4a57002d8bed5e4010. 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/FR2X42077227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a46fed494fbbdaeefc140082fdce9ce9aa47d8e6866219156de719f8d29eef3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR2X42077217.
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 0x7d0320896c99e83d1637face1be22fdf1e2e0ba8836c79e8781c816fee0f6fbb. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FR2X42077228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc037ca2fc5799a1415b6f1c417c8a5d35e0981d90b88bc6b7a4060b8cd84f116. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/FR2X42077229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9c525cd65037c864a28454c8dca3fa9a5a86d36ef3200eec89e45565761846. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/FR2X42077230.
Ahmet Selçuk İlkan Unutulmayan Şarkılar, Vol. 1 (40 Yıl, 40 Ses, 40 Nefes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06b6d3221fcba0b5c15afa1d2c676917b6e87cd33b25e9a429512b04ba2cccd. 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/TR0391600331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e4dfe963f87d3d07b6a7e4d5f5f152e7a7f14cecc6c8859dc6e3ec17ab03a9. 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/TR0391600343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa4ab95a3df0fcc01d47679c351c56d02e2b07da0b4a88aebf783121301be9. 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/TR0391600344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197386ebbef911b53e10aaec8743d3723610beb60ce05560aa7acb21baca0eb6. 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/TR0391600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ce83b9be0a87f4ce84c8d38698c213d2f2d746335dd88e3714265508c22ee5. 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/TR0391600356.
Ahmet Selçuk İlkan Unutulmayan Şarkılar, Vol. 2 (40 Yıl, 40 Ses, 40 Nefes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd815555eee70c9f22b5f5106ce3edc1a398cd736be83d50df1e310c36a5165. 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/TR0391600332.