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 0x24a71be9c54d677a5b0637291d6fc26a31bbd5966a370910e54d7871a053f8e8. 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/2dd50678-32c3-445e-8fa5-34438b9e4cc4.json and https://artists.proofprofile.net/proofs/artist/2dd50678-32c3-445e-8fa5-34438b9e4cc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pakosiyimitan - Pow-Wow Song Recorded Live at Twenty-Nine Palms
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 0xc4bdf2a1a589881078a77daebdd149c605ed93ebc29ace56acc3c2a2a9871ceb. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US8641048101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823622bd1509a458e10980c6489c4066dc3108c6b9265f366530f69d34394c42. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/US8641048109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9c57120a35896cfad18a8c504745dea0aa433af4acd448877227ccc095f975. 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/US8641048111.
Pakosíyimitán: Pow-Wow Song Recorded Live At Twenty-Nine Palms
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7554a7769fc5a0f744942725b1d21270015efa895b23bdd9873c5c5d135a26d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US8641351401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f258f89fe35f8cc355e73a275fd89112bdc5a319d79a490d0783e5c8c402312. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/US8641351403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae897785fafd23bd5bee1682720b7f05d3de98ab3da89ff78cdc0153f6e328a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US8641351404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eced9ec317fec127c08c844ec990d47e19005174b9b4d1f01a4841c5d25a0a. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/US8641351405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fa0836ed2812c2f8aa3322382f31eb1d91c90efd9b238e98d18fb863f4d3f2. 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/US8641351408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa9c1e230b4bb74f90177ab1c70762ca3ce894e341530e38fed9eaeda194dbb. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/US8641351412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2096ccd2d5ff7d3c1d49b595a26d4696c09574630bf8299a627e3df138a24d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US8641451904.
Medicine Horse - Pow-Wow Songs Recorded Live at ASU
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216cc7ed0581ba47d2c2550d1c5a0558b53b267b0c7e65089302f93cdae77be6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/US8641855012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fbc6a6b52bbb48c0cdc0d63a76e78e27f2e81dde15f684e177e3e2181395a4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/CBET72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154761bb6009bb3b398067d07b415fe09fb3ca829b12eb193cafbbb5adc878bf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CBET72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e30030884269e6938d1f0fb629efebbd551dd33db9c214e87377797d83f447b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/CBET72400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec0e01980cc8d79494f9f4e97fe7ef497435438a0428fa5a7231c40366ed819. 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/CBET72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9e9b7b8e49baddadd626c370470e2395882f27c83a92b8c3254c5bd4ade214. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/CBET72400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f09afbd043fcf57f0d41eb88148bd0ecda9528fed600d4018f4388e4e13163. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CBET72400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa6125e1379de4abb45596445052874702ad59f99f5c93d008bdfa1350cf125. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/CBET72400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4105d62d2e4b1555f5d857d6065bef0a96c9dca0987f6d42cf9469d451a7b9b0. 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/CBET72400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a1864d1d34c6231c9464598384f696b3bb70062467ca7421aaf708084b78f. 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/CBET72400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb6679b066d20e6ae643059389b8ff881e7238b4163a683cd618869607a7ab8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CBET72400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2906fbcd351d0c6ba4de5b0bca6d45acfebc67c4d97e78035e409ef8169554ce. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CBET72400012.