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 0xb4dc483f49bc4c6c0aa666248d9fd0d72ba2447c9700b103cdd4476281203018. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b25482b7-b6fb-44e3-98e7-66a85852c669.json and https://artists.proofprofile.net/proofs/artist/b25482b7-b6fb-44e3-98e7-66a85852c669.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 0xa866a09d2c450314c36cd900d01345920b144bfaf629656e4a850ad9b1b9743d. 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/NO2JO1603010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f7ac1279cdd04a4ba9acc55b268763d1cbba63821c75cc6b3f4b70cccddd19. 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/NOBWW1802010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a78f0f2b97c4eea797805cd3344086757fc206eb5dbe898a896d48062679fa7. 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/NOBWW1701020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e334bfcf0cb301c266fc32821cc0040e436a15c0bae6198a8562853c5fa6c7. 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/NOBWW0417010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1981c0f6f74ebe851d242973bb51b07d14b2c105fd6ec43f5d05eb9483c99389. 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/NOBWW0417040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154cba57f16f9805e20f5a4a9d04b154fc3edb7e81afa363a08db8819e89ce2f. 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/NOBWW0417060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8609e93cad4e6ed3c3dc9c41a6c7621b960bd17dfa07c426da0f361e007a2a. 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/NOFQP9650040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcfcc058b77454bccee0463b0bf7ce2777446f409b7e35704603e4782b02822. 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/NOFQP9650020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc48948e07ce9b747f1c714f16914e020f19398c286cb89705023e7d59428fcf. 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/NOBWW0310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebc0484a90625961816115215a8137ee75cf5092e38e6b8f4100cd83b426b2c. 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/NOBWW0310040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc48948e07ce9b747f1c714f16914e020f19398c286cb89705023e7d59428fcf. 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/NOBWW0310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8721ff21017cfaf31bb83f1e07a84930e28e6416515041ced6aa036f93266624. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOBWW0310020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebc0484a90625961816115215a8137ee75cf5092e38e6b8f4100cd83b426b2c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NOBWW0310040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f9b91832e49f4e84de0b34822cf9c9841a5db898405e7749a7b32d69772b52. 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/NOBWW0310080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcfcc058b77454bccee0463b0bf7ce2777446f409b7e35704603e4782b02822. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NOFQP9650020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385d0228a4f089140b65ac551aaf6fb800a559b731a89069d74bf5401625a865. 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/NOFQP9650070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b6f3de2c5a23574a8b16ba72a494c6df15cd0f6d6c3f077d0b4b34e5d18d94. 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/NOFQP9203020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1b0a78a6405548120c7227d47a19eef13d178e057859f5b1143c4670f5654d. 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/NOFQP9203040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb4c30020bb8ed80e730fb39ef43af07a6e11cecff07077908adc75a33b2cb9. 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/NOFQP9203100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466989260c20508c29a269f35a33d2357208e09719c5f0c54e992b43988fc1f0. 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/NOBWW8901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664b80d026223f01842fcf26589ec791d34331555ffd5d4d833e4051d7d0cc59. 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/NOBWW8901030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7246ba26418c860d82728dfabc8f0ce1d6db9c7a5cbd46d8a0d538062dec95e7. 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/NOBWW8901070.