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 0x5462a36789a045377199b552f82a5e38a3ddce4bbe0049b5192603520ac7851c. 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/a087ec25-4282-48a6-a964-c5342df7f9a8.json and https://artists.proofprofile.net/proofs/artist/a087ec25-4282-48a6-a964-c5342df7f9a8.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 0x702b8ea3b2b9611b717af11c61dc43960888bb731a038f82ec16c97a0caa3dc6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USOM80306701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec11c4a5376edfb6ab200a5ae1927947169874e0b30fde55479ae9ef14ac16. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USOM80306705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7adbd1adf678951f40a86936aaeadf0b6568011f501292363f9f753e79ad600. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USOM80306706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394914b05c0e6b47ec7769282697919f1a805fc17f5254b0547afe259a092f42. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USOM80306707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2fde6c5079f0657e4e4476502b5cfbf642b6916de833e84a9fd2d925342f83. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USOM80306708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f3d063948f23ff271b50ae40cb43d2c30dcb5bef64b14981bc818f3d66008. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:16:50Z), 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/USOM80306709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6967a96146d57251ad09eeaaf9a74d1ca1cf809ff256fa8f8aea307507dd176. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USOM80308912.
Fall Into You - Fred Everything Movin' Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7c1a204bf0a9f9015b828ece62eb660124d6fe683876ce07d05e27c3389067. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/USOM80308501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e47f5a5e796fb451dd277c0a727a541d4966d9aef4f2fc84507af60990b598. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USOM81149402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54e6c4d3f5cb1951b6a6692b94445c90e24f13395ad8bae2b917cf93b742795. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USOM81149404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37692f340b0faba9035f2d6f481d0f7ebd828c0b4b8a95b286eb2db99cfe7902. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:37Z), 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/USOM81150902.
Golden Lounge 2 (Compiled by Henri Kohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966d544433c2cb8b5157cddd60f2c3267d9ae0e86b2ab80c04bc7258c6652551. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USOM80306702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef602c65d709e94f731b7d50494b8c19be4d9e1e19876af791b5a7d17d5f3778. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USOM80308303.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
March of the Dead Things (feat. Teenburger & Soulstice) - Krilla Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac0b12fae1212da5d55871fb438ad1da85e3d0d32d4b955a92cf904ced60792. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBGH91200032.