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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306029083ea11f94c52034334ed6d3a8567f792bbba944691838d8e097392377. 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/ff110676-1c88-44f2-9911-742d405a13a1.json and https://artists.proofprofile.net/proofs/artist/ff110676-1c88-44f2-9911-742d405a13a1.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94f2562e2849f93a24272b070a124072ac7d334592485e7ea70003f2eaccab6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL4QX2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9715ab817d0e7dd4ae902d9b6a1608180853ea94e90cb462153a0ce67937ed5d. 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/CYA112300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb485fb7464b72ca4d2cac2800b3d67d9a16ac8e5a2d6d145e1b2765db41881. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CYA112300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4b25ace8cff6c090b9d893e4fc0437b98233cfb2ed51e6a4069f20378f001. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CYA112300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a5905704ac0f06a97eee8c99d6714d99fa851a31431f3c9587f3ff24a2797a. 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/CYA112300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6be962bc0160e37fae533a92ea26335e7b71211dd7aebaf116fa837dfe54844. 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/NLM5S2302001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793f912e7da1d54e768a86629fc00d2a8c4f7f30f772a5001d823b75494fe09. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLM5S2301921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bcb26b5ad87322175f7a0179d404324ec019dd745c90582a79013136664979. 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/NLM5S2201821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aacf3c74b495aeef881191315eba02fb6d52dfd899879eaa34df71abc205456. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLM5S2201805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522cbc2e10d9e3cf7283403e61b1b2072c7dde2742bc79cc7e0e01534ec8dbeb. 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/NLM5S2201767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd7ee93e14085a47cf16afb982e1aa20824caab6be516b137f69362092784b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BE5KW2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822bfeb898fd5112112301485296e07bdc9a2a40cbb68a167062d74720796a4c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLM5S2201715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa151875613e3f53a222a5d10f6e36268451aefec2c8953b51d6baa83f70da3d4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLM5S2201673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa173c41c4d138716a6f99f5506fdb05bf85691382b9c8a6bf868f1b989b82e8. 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/NLM5S2101198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd988634d9091c358c5041cc99f1f61b05e461b7123bded531b75c941a2e7ec5c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLM5S2000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ab94676d1755cdcfeb9358c2f0ca9ff26ada0b1b053026ce5262570b5d860f. 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/NLM5S1900740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5e4fcf0afd50f784f924a74cce134e2e627ca04f156045ef5e571f859f6fb8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLM5S1900636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067e9f65206389e79fdb9da89490d01c7eb531d1dfc0e4d514ac36ae28c2b495. 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/NLM5S1900553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4120a1b8f4af204d28ef05c0083483ebce3b30fd5e32b7277d90961dca25bcb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLM5S1900513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4329457613af2598256b9823c683fc877bad45607a74aece4c42c4558e7c108. 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/NLM5S1900495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd341603f2674b8537b1e68b05c78cc32404c990d5c623dc4575425bd44a7f7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKCF1800671.
When We Were Young (The Logical Song) [Seth Hills Remix]
When We Were Young (The Logical Song) - Seth Hills Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ba41c46705ad77a91075699346e0ae26166bf59a9ccdc21d4a67bc7b5098f0. 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/UKWLG2400003.
When We Were Young (The Logical Song) - Seth Hills Remix Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5d644b410cfd28dc59f14f7f06c1f34214865d21672859bf53c817151f5564. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKWLG2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0d728ec65b06b967756944fabe0d765b1df5f51510d903257af9f1bcf5cc9d. 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/UKWLG2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1600dee92ee3b642a0339b9e70206ad3435c8299a3d725336f77c66cc61bfd1d. 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/NLM5S2402152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1600dee92ee3b642a0339b9e70206ad3435c8299a3d725336f77c66cc61bfd1d. 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/NLM5S2402152.