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 0xc57ace98e52c4511e81b1b41bc791cd0602e5cc409f9c90d3c08647f4bdf503c. 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/6a1ff65d-e4f1-458d-9ca6-a4dd1526b78a.json and https://artists.proofprofile.net/proofs/artist/6a1ff65d-e4f1-458d-9ca6-a4dd1526b78a.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 0x93ff90fc5835c5e544570071a496b813715ce2346d20fde9c9bb96c45eba310c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLS761600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b20008e686c90b70ea325981fe1459a52dfaefa6a598f989c5e4dd6c1c9ad5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/NLS761600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4fd679470aae8accafb7bf930979a3f74423f1372c0350fa2c509bafc17c8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:16Z), 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/NLS761600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53507500ec52036260231e179f13d2b211d2ed4140664c6a90870c9f2be84626. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLS761800224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa539729e12cdcb049e1bd672b7c9e04a9d3e5eb238486e323be2c731e2d9bcb3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLS761800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625a34098958af05035d2bfbffd74d18cbc53ab9e6385e85f9e1317ccf3faea2. 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/NLS761900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65b119506fced92066604d14aceba45bfaf323a685ef3dda6896671f66ee15a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLS761901337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c40955cea7b66c8fb418bd25851b8e3e73428254a479365f6d47b1750e01604. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLS762000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89433eda47fed2999c4da8a752347d87415fcf2044f266014a57495359e238f0. 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/NLS762000381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abf3c325344901fd0a531d1964944b169a76ca11e2662267801cdf07f47b82a. 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/NLS762000477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861e4a80bffb44b85517a20f08b62b55b0aa2eeb45282cbee7328ad9606ded07. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NLS762100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617496e5b775542035e6d5f25be277ad8a00fab864e8e082f9ebcc0190a22a65. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLS762100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40101f28577fcdf3e647a245b82eea8e4850e06745f4282a4462d79a12b2041a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLS762100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7f3d4da9c036331362c5df79a396aae2adec4ed7ff46a6a70a52b581341154. 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/BEB682200091.
Have It All (Hardstyle DNA Outdoor 2025 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd267bb6323453fc8066694047de6c588b98bb3976145ad8471e9933e5fad722. 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/NLS762000281.