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 0x789d3cef90548bfea5ed697299fb8392adf471506acc7bd199e2b4632f7d8ab1. 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/eca72f4b-ef3a-4ba0-9a52-cf44a3788276.json and https://artists.proofprofile.net/proofs/artist/eca72f4b-ef3a-4ba0-9a52-cf44a3788276.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 0x83e76aba06b5c0d805ea39427b65a0d81b40156670e65a6dab677745f37c4929. 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/JPU902304158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd48a738bbb124a4b5f63585a0a0f2fd6cd973b24828ac78a368931aa05c93. 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/JPU902300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03c8d7363cac9970b7b4dc6c0e51b61c256a28595cf86fe8dc2e91540a88469. 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/JPU902201488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2e27b37ebde9c40ed56d9615ebc3babc39e9120d9c9539f9e9c1933c55b49. 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/JPU902204373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92ec3894e2c6542afda4121e17acd30e2198c3d91bd2725c33ddbcb30e16576. 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/JPU902500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d70e39d123112d2f0da48c55d8cc79224aef22695dba86a465fb95dfb3c33. 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/JPU902500167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59992805e10d37ceeac2ac93473c5eeb6faaa55997b6a38606aad5a3a25cdba3. 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/JPU902402503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b2ab84d8a96b25b2d19a5713eae6bb1b3e80ec041b593cb5d247f96cbf51e7. 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/JPU902402099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd48a738bbb124a4b5f63585a0a0f2fd6cd973b24828ac78a368931aa05c93. 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/JPU902300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d6a94211c12fbedb128e53a871eb3b33d2d2a8135f23011eb3b404bb80e5e6. 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/JPU902203871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2e27b37ebde9c40ed56d9615ebc3babc39e9120d9c9539f9e9c1933c55b49. 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/JPU902204373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03c8d7363cac9970b7b4dc6c0e51b61c256a28595cf86fe8dc2e91540a88469. 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/JPU902201488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2e27b37ebde9c40ed56d9615ebc3babc39e9120d9c9539f9e9c1933c55b49. 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/JPU902204373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d6a94211c12fbedb128e53a871eb3b33d2d2a8135f23011eb3b404bb80e5e6. 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/JPU902203871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf09cf826d17ffe52b9b12c6e8996f87dbabbbe19b62d3df97064f22df66718. 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/JPU902500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50c32931a9c03c1eded0adae2a8e8aaf9765592a10c23ca250aadd61bc8f131. 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/JPU902500169.