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 0xd391ce876bd90ad327ccbe8c108b5fb32273fb6b983ef1bfa5dff7c8ccbf9e62. 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/34627987-0056-4274-aea1-5cb54fe4b8ea.json and https://artists.proofprofile.net/proofs/artist/34627987-0056-4274-aea1-5cb54fe4b8ea.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 0x7f122e40ecc361feaeedc8e30b96cbbd69ab2c1cf7b9ec1d4139127e85e9b4f6. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:57:28Z), 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/RSA221832433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1088bd2cb7897148d33e4faaa9ea5ac615d9ec838bc702dabaa8c904a303c077. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/RSA221832440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468686203d9cd6853d8c2a640e25a0e69a72685e5ad42243c65c2b2cbdcf151d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RSA221832441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8970abaaf1f83b07dac236511bf0ddb71eff5c088e4aeb4cf804910acae188bf. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:59:48Z), 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/RSA221830949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5d89204105e9c1648ad6d3c8e4a12b097e9e7a792e414bca6447df457c8636. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RSA221830950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbda858b51ebb6a9f7f4a0ae64c73bc5aece3df282febfb76965f0424a004bc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RSA221830951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cbc7f6dbcf98a46167c1a792e845aee809240dff1928ca27e435b9fc24687f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:46Z), 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/RSA221830952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b5df9a1d6a381ec59921b8ee35400aba8f14c8926987d343fd9b42c75b2a3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RSA221830954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a01e85d310c9b6a6e27f4e552086a92e19835f469f4778f88ec9b6093f6ae0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM2PV1648679.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79cac847de103359b32f17a53a5f40179a07b561195504d17d57012e87d91dd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:39Z), 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/QMPKX1731891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acf68d118cf22208be5b9417c26bde9918ee9ed38a51699669d6ccc4089f221. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QMPKX1731892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db9d14e4013d10386bb2441ce2909db57ef87f27947f5f17d9051863eaedd18. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RSA221833287.