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 0x7be1eb3b7da2a0652ecf81262374b5417f9048c82ae69117d87402aeac6f974f. 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/a4f3fe92-0747-44a9-8d56-8f90b3b7d0d3.json and https://artists.proofprofile.net/proofs/artist/a4f3fe92-0747-44a9-8d56-8f90b3b7d0d3.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 0x378fbc2330468cb71977bc7c8144c75c9347206bdc6121f5c8d90dd07bfe298f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US34D0400651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b63d184fccaa046b914b8ed06e4a945f10a19aeb417d14bd9f007439d3c8592. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/US34D0400654.
Medicine Melodies Songs The Healers Hear
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399a757d85662fd7a1a149fccbae80f243e48d53c3a7672cb21967d0a389e3f4. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/US2BB1201041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4d60e7a8920a6fa323af1ea98f8346599beddd9a25d3d67258afa0c96689f2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/US2BB1201042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf954de30f0ce1dda3b40ba25a0dda45e3e882ab92b9213d771df5e29c572ea38. 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/US2BB1201043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965116b10e4477ecd1f9bfce5228958b9acd5d43e07679db001919b321082f9e. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/US2BB1201045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503be7a633ac7ca2aaee5557a9dd822279435eea92c39e66118b5e8aa3f1ab92. 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/US2BB1201046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb1731870a6900151adc40f1fc0f9a1a1863dbbb1d4ab1485441e3184f5c3a6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/US2BB1201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdb2d8e64217b30a5901c46aa003d66ef2600c20b401dba9d9f0ab78b5364aa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/US2BB1201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c294d6296fbaf174112b76fda8c2e7cc3c85bb7d99cb52e1deff392b23db26. 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/US2BB1201051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc804b544c19bbe5d0f4790fb8098f353ef47b6b0642d25702bb39d900eabb20d. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/US2BB1201053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7374803f87ade44c971a6737fdd7d6583b8bb47fd783a9495d4dd9fe7bbed5. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QMQTX1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78299dd4a84a95e982cafc2667459ddc06312b733af749d2bdc554d11c5bc5cc. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QMQTX1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801936c18121eb0b84c4ead5632c1ad61730ba657b6eac679594f0a32ec2448f. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QMQTX1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34e8fd30666db84c1aa4660ff626f787c0a39c8b5800ef573990eebbc809753. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMQTX1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dad71cc33113b94e40db4e516f2e9c72ecaa716e5bb5937eddbf966be152e8c. 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/QMQTX1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393cb945bb682b065938ba9b52df7ae86570007ebd6e2db1a88387f7ed70af60. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMQTX1600009.
Liminal Clouds (feat. David Darling & Todd Boston)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08e64a0c546e16e621776e4959fc39c58737e27594899549fa3d77b7d42f901. 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/US2V98042001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4490489e8ba5bffc4d8152ed476d5e57bb28c0623e8e5a4f7ccc1c6510fdfca5. 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/US2V98042003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5960f2830ce3ebd91913a01e07d35d308ddcf26496eef7bfd3b68e89953afcb1. 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/US2V98042005.