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 0xa5a61a3bfa173e0a3d61b8b17d5b56f56669f6dec6997effd07a8ed65d50341c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc0ef35-8446-4927-ba61-cc2bed03eb9a.json and https://artists.proofprofile.net/proofs/artist/adc0ef35-8446-4927-ba61-cc2bed03eb9a.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 0x7a19834c523571febcf59bdb27cf4776d81d79cccfb7215804a223b08333d728. 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/QZ5FN2257638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec6e4b61b59976cf509e2cedab7d54b3a7cbbe772120887f24dedb809260906. 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/NLQ4L2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb688d9c1fa5e47d5a70f74000a489b164587ce0b43caeb1c3a58ce649b4115aa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2450330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eadf99863ce0e29e7e8336683a4148dcb0541004ea8b36ec8b84ab311512162. 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/QZZEC2321473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132476bb396365043c57e3ff33047c73bfb16b198d667acd575d68ec04e63d99. 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/QZZEC2321495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f079757fd4c29b865e145b75d10be36df395d1d7a6f702f61f54742c829280. 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/BEN582300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4f944cbed7d39f295022bda8138b9df587b82bedebcf1eb0822e4c2431a4a2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX872364289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc455cf12585a68cf23c105f686591e86b541ba93e7676dbcd92b79f4fcaa846d. 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/FRX872363277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe326f7a0e98ee5e1190921155971c07873aa64b59282fdc16918c8e5e0266316. 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/FRX872363278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ced33b93bcc1e1f8f80278a484ef3227f084bac6e8611f2e0669db6b9bb841c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBER72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f4f962bfd47bcf88ec1a2a520b22529bdd017d323cc97112c42f25d4481306. 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/GBER72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ced33b93bcc1e1f8f80278a484ef3227f084bac6e8611f2e0669db6b9bb841c. 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/GBER72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f472e4a2bbc6fc917e4a5d0cffcaf97a01edf31db69ca53959d419a80a5a43b. 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/FRX762283220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9946758df213153883fb2a58a2d8b08cd472da9dd3a48cba48af36fc8cfbc1e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/UKN6K2100529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb1b0187e0351de4d920553e309027cd89a4e37751d863c578686249dbf667. 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/UKN6K2100531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f63a813414f4c754a479839d47ad1525fd3dd6b0f7eafb96364bfa5ed2daa5. 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/UKN6K2100532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec238430cdc882e2b3d592b3c9c3a418b8502f8c775225362107ac1843d87a48. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:37Z), 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/UKN6K2100530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b7b8ea4950d94bb761254d06273aa0c58e83650c6ca0120f53babab62ce102. 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/BEN582100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708ddddf95dba1f83c3b2b73399e58ee424e254c0b89ff6cc2cb242ebf674ff4. 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/CHE692000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f079757fd4c29b865e145b75d10be36df395d1d7a6f702f61f54742c829280. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BEN582300435.