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 0x84bffd3a7f0444956b92f222c944a1173a3ef806a73dba6d6db54d4aae5c8fa6. 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/cc1fba51-61c1-4ef5-9dfb-c32e74423fd8.json and https://artists.proofprofile.net/proofs/artist/cc1fba51-61c1-4ef5-9dfb-c32e74423fd8.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 0xae67e25e342875b6e20602694b7efccf6dd69eaabd3d1d886f21f54700290ff9. 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/GBKPL2093853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ec547f39767b3f582b2c54b949d3f52835e58e8e933327faf38f52290cd48b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB2LD2320336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc6783c65dc174ca1cf78385efe90201b31b030d6370b90266d37c962454e5. 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/GB2LD2010110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2dd006c60f99512bb6e8dcce8b72dfdd46230a3f2ae11eb6828b9ec0d5e3d5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBSMU0038198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c04903966329eb31e986bffe860557c19ca610fac55f759b00bd021400e9af6. 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/FRX452197356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437e9e23ff110b63d6cc4d67bc0f9094a78e90fe4efa385cace2d64f24ec7c70. 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/GBDLM2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc6783c65dc174ca1cf78385efe90201b31b030d6370b90266d37c962454e5. 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/GB2LD2010110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7290bb081243268ad786cbb43e3709633ee60af06014117c0b9f2f7a994cf92. 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/NLT2H1900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe033db128abc2d02cd3ab4a31f2a7ddd2bf0af4a006507691a39fdad8b6fdb0d. 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/UK6KW1800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7861c94c0c83cb6f37c12841bafd7c507275b56e3f80537d2483709b001a75d8. 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/QM6P41832024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c2a17be2367f44d3dec070cfaaa84b593a209f4d4d72465aef26130b7603dd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBSMU4836303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefac04c5e6f7bf8cd90d82927398ae7764a30f67750392b9525c61cb8eec916. 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/QM24S1801304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2def85b15a44a50eb9af0c0bea1b1ea58a6b8f8fe2a5d835c46689db5543146. 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/GBSMU4565832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf478e7f6b8514eb994be97f7fb169a7764cf07f43e6175c3637861170d32666d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5FN1760005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c5023ce3b877a3d45a2e03768c9e4133b4575df79d9d12341d873d59edd4c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S1702734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e0040d94dced4a52e2aaa1f7fd1fd16cf823a30ead7c9fa2ea117eddcf3ae8. 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/QZS1Z1630534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992737466e7d7de25798949a21a449874272993b0bc44ef1d69572857f8a1451. 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/GBSMU3050601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803959dbabbbe8d925a8a9af04042195ce57a3f170f33341c8f2d66114dd222a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMWZB1710952.