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 0x3eddfbede0c4a6ed076f81484887d1364f92d3e2a7a31c1c03eb80aeae620a77. 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/a9cd2d8b-b9cc-41d7-9ac8-0c82bc8698fd.json and https://artists.proofprofile.net/proofs/artist/a9cd2d8b-b9cc-41d7-9ac8-0c82bc8698fd.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 0xc44cd920d4b891326bd2bf907bda1d123fe10f30d99b2289d213541fc2bfe798. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEPQM0613648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a865e1f323453d2e0113b96226221ba3fe40693523396783f41bb6e496ae3e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEPQM0613849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdbe26bbc993e58f657481bad8300b222c5b8527d19cca5d80361b3b7cfbe67. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:18:13Z), 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/SEPQM0613850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619d93cad2c2c4d915b09046aa11558c0c58923e06791aa81f95fca7421310d7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEPQM0613855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ccd9b96038ed9ad3f05720749f4a9ae9970c42af8b1001166dee80553801dc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEPQM0614341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb76ff989076ac67b1e3e9c2263d8b4e82af91359de580c43f508dd6e344d8c. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/SEPQM0614344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab7edc8cfd651521d241afa91dd58ba2b8bb169f5ab1541676e2a92ab909d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEPQM0613868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee1671ded61544c1927e76a86c63b8fb68e3fc434a82e443a4fc04977bb3ab3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:13Z), 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/SEPQM0613872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e5216b75afc0f2b66a9bab0b31f21a8967b565008b4d592e43abe30949c30. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/SEVHR1302708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aa904d42ffd80016a811383032a7c2bf728d101c3370d69e5a70b0d1370a4c. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/SEVHR1302711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878ac6b828eb5beff0ca6e0710e634d1633c078fb56518016da00ab856190019. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEVHR1302713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7668c0e89c124c7e093d15a627ad3459b22a4a3ba5325d125d3e5d288d4ca1. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/SEVHR1302715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900fd05d42949d683b787b2abebdf6db75d6aa9c095281d8d57e79fbb6671973. 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/SEPQM0614340.
Sveriges Bästa Dansband - Berts Favoriter Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c97df58a1d595478caa1fdd559bf27fd55d072a355b7a90429e84813e314d6. 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/SEPQM0613853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cd920d4b891326bd2bf907bda1d123fe10f30d99b2289d213541fc2bfe798. 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/SEPQM0613648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde96c29f11f308d3920e91ddad58b3f3e0934b61816dade10e4218e13677d0ea. 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/SEPQM0613860.
Sveriges Bästa Dansband - Berts Favoriter Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9031c34ac541b7f73ec09a12a6c172ed4f242832ee4d668bb28fbea96de0aa5f. 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/SEPQM0613869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619d93cad2c2c4d915b09046aa11558c0c58923e06791aa81f95fca7421310d7. 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/SEPQM0613855.