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 0xa7cc3414a9de2e5f715d988443554c71f379cd0d88314f306fe8cbd708c0c9f7. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c98c14a1-fcba-43b6-8c65-8b742cdd762b.json and https://artists.proofprofile.net/proofs/artist/c98c14a1-fcba-43b6-8c65-8b742cdd762b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
70s Music - Solo Guitar - Instrumental Love Songs
70s Hits - Solo Guitar - Instrumental Guitar
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 0xe7b07193968fc89118df529d11cabeb36156c6e7b51e414e20be4f45ce5cd324. 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/US5UL1347712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c36749ef627d1a06e4698d59d73f985bdcb0c61b1696fdf1a4da2b3016d38. 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/US5UL0699688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f79574a93f2980057b254e582951b62f20e77bef874755bbe198172406812e. 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/US5UL0761460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310f4b40cd6777957831ca8fee9e0d91b36820e0b827fd66c87be3dd59a43e1. 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/US5UL1201016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33386c90dd55617df16c3028c1ecc4eb80624c3d9d6d84c1470338f6bb114216. 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/US5UL1250605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6802e1c3f30806c31d372d85ef46c7997d258ed260584f753f739527e845b0e2. 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/US5UL1109321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247eb30c3611fa27388586fca8b93466b46851ef39cb329368d031ca03153acc. 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/US5UL1315483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3d527656601c67b739192317e6aee775ab288ab7a87d75479ed46657a75fe1. 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/US5UL1427589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb56d1ea4e65000991d71a84cd60392d2fa4aabc96645fa311670d84e6cb1af. 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/US5UL1027700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc053847f1f11fde2a73fdcad69b3bb167a4c340ac9e025d3d544b7d609eac63e. 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/US5UL1143954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9430190b5295b2ba55a2cca7bae1d97bc6fb0dad63e683fa498d561c20c029d. 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/US5UL1419528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370bdde8a6057378e406bce6f595223c2c10394b1028d882369a8cc549d5c4f8. 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/US5UL0777138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca435e4a8f5adfe016cf3eb844874ebd62adb70a07dd31ded3b3be205cf66ac4. 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/US5UL1328048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae53b26021cec97188941d03a75321ad46f6ec993e73f9cf0a003ca8b652d67. 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/US5UL1125094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec34d0f4870482d065a35b9af31170662ed12c8332e44ce95396e73cceacfa. 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/US5UL0696945.
Focused Calm: Guitar Music for Deep Meditation
Guitar Music for Nighttime Peaceful Rest