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 0x748851cd538c18670d1fb236244cf2fa554a2a739758ec0e85f37d76e3290310. 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/89f47b60-3fcd-442e-ab7c-941348322e31.json and https://artists.proofprofile.net/proofs/artist/89f47b60-3fcd-442e-ab7c-941348322e31.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 0xe2cc4009c0590ab20edceee6703d4080e0b6b500cdad5cba931fde5b2dc5bcbc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:08:46Z), 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/GBSMU8276693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811dbfac0d7c7145f3890f27ddd85b45b4f974afdbc5e7bb1a69780b4a0ef21. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBSMU8276694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37f791e3f21ddfc26fb272482cb1561784d60e0af2720717032ce3c0aa97f54. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSMU8276695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c233ccb7bd7cb90ef2f204d663356e78cf46e6e65d861009b8a8469bd781f5. 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/GBSMU8276696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f689fcc2dd83498da5c6d43f99f261d1f378f181bc3bd862c5e28c6b3b2075. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBSMU8276697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef7e5c1ce43ffdf374ad874695d23df53acf3e09e69baac524199dec8eda4d8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU8276698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b5af705931d8b45414578de831a164a1eafd4ef1efa8cbbc82a71b54720a5d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GBSMU8276699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9827a6e26a5e165e7d0ae52d9615c2df43c751cee1e2f3642c99a127427666. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBSMU8276700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd1d54cd66bc82b1cc568497c899b53ea0ec5d8ca1389d1033f848ddfe7d360. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:51:02Z), 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/GBSMU8276701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8b438803174fcbb5123c747bddb458dda04513972650f774b3cfd10ebf0e6d. 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/GBSMU8276702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9668ce32f6545357ab8f8de1caf70c6bd1453cf28c964689d47eabd00c4dd91f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU8709923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae8a1c4f7885894de9730c25cb86f22ec5bff75c784cca2444a061b64d68382. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU8709929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cf198ac5445f729002568c1ccff41fc9485e371a62213760498ac77d6c452e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBSMU8709931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f975facf4399254d4eb4ea392979b68f8aba4e0bd3ef3e689bc965838ced6c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBSMU8991922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42272ff49eb8889be25ff10d613c1a93d68f254486dfabde9352dc2e73f81195. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:09Z), 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/GBSMU8991927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7693e12624b696e4047fb91d22101bc15cc311b0dd5b2883e28b1e76fb0fd66. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU8991928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ebd2e2d4d94c8c48591909ab6fdab45723a7efea09ac5de73c16565b5e4480. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU8991929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91c0a948e99bd38155ff3a4d43c173be413d4185dc5f1248f88baf8d2455e36. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GXBDS2306343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a91cd1b0777ba9945b285fafa1444b414054c67f38fdfc9c43671df260e809. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GXBDS2335488.