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 0x9e816cab336871fc740b0715877518078778f1845b16ba75999d987cc52fb538. 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/27500d71-b4af-4bd3-815a-21dfa030db53.json and https://artists.proofprofile.net/proofs/artist/27500d71-b4af-4bd3-815a-21dfa030db53.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 0x2f76b0e26858c1757b5e626f5bfa479cb82854a5eb25a6d0effaf7e29530ce3e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USFV71201345.
Beauty and the Beast (Beauty and the Beast) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9848f54de0db121bbddacb58acafc6890d9db0a752c27f25e124ebc75ff9131. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USV351387061.
A Dream Is a Wish Your Heart Makes (Cinderella) - Instrumental
The Lion Sleeps Tonight (Traditional) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e454e46539537f49b3c616a2b0919ca1949f2e403e055f2b9c9ba08210a25fb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USV351387051.
Alphabet Song (Traditional) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1f0c5c5856abedfe87eae9e0f883c114d707dc8c56ca07589106f8c7c724dc. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USV351387053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9848f54de0db121bbddacb58acafc6890d9db0a752c27f25e124ebc75ff9131. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USV351387061.
When She Loved Me (Toy Story 2) - Instrumental
You've Got a Friend in Me (Toy Story) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73206e2dfd6e881f45b6e6a73c82bdcc8d10e1932365bb1bea0acc0d9a878b87. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEBGA1803999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63d9c55a08cb7151a431f6c3128de69f6fc1bcc60240f371af8ef0ba4e74084. 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/QZP7F2110148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9696289dfa9592ce63a984942335b1894b966f6c56f01041364e10f546ee473e. 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/GBPS83724513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a0353a71028b1e902543b304fcdd4d90370efba02673629b16e359d81c3081. 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/SEBGA1802286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda92bfc774b9c4c684abf977e69b6e553118487ac8691f26af0282e8a10e05f0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SEBGA1802926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1768270bac34d27dd11816afdd0c3da4bd7d16cf17f5666269e4cc7ff58f547d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZNWZ2102302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90972a97c56d7077a3fd37c2a19db90192fc0f76f1c8c8c8d0e543eb03202fb2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USHM22148733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4e9b01242cb2998d7537b423e46fedd990c754f6f4f06d5fce08ef855ada84. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/AULYA1300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1572b62f134857ea2b698b8fdb162fa7e77c107115a24a724ea8ad3066113054. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AULYA1300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab67c99d089cc571f80e7366f0b7c5f44cb690dfb86aa895b4eaa8f17c9f4e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AULYA1300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550ff1043e0c3792a031966deb78316f25de303b00487a040bdd82f2cbf45757. 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/AULYA1300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c270460cc34abee877193d655ee0a40b88ededcd282fa656c4cbd9c7eb7d21. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AULYA1300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ff3273e53896714b60bdd9e99d102696b6dff9eb9524e7ea593acb61585d20. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/AULYA1300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957053ece34f1cfa1dc302af06c89e2888498d509df387c8925b2ccb0e2f55b5. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/AULYA1300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21914417812432efafc05109372d69de8b6972cc6e199e61a11e440f2fd0978e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRR642300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccb2b5887da0605ce04dee4b84978190901f2d56832c780663954d5cd13614d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRR642300522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef69b80575c42d49b279a1ad971816bf1bd965a2f26042f7c908fe2d794d98a7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRR642300521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7c7842930c69b2bdc5ea689b136387ecd3d7e67e7ff1d75ceee9af65204d6b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCJPT2240874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5614e1e7bacff7814eb7b9f57771b753bd3847df51915fb8358e61513577490. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE4RG2306004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5123e92d3f9d41ed996e84f62a15705b4790a49b8c30d14cdafe52052b8bfd54. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRR642300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06f8b07f9c44612d76928affe27f99b736a16a1ba5af75ddb177a3e6ca57c41. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRR642300516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b59f0bd685508c028cc64bb5f6035b778f94fc9a272be0dd38e9456862d84b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRR642300525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629d2e3b8a4446d299fdd45647cb16e2039142d280d1bfe271a51a4ce44a74a4. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFZ22102959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f09bce03ef8492b8cf0a8981bc96d61c2d79021addef403ba21b8e0658947ec. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/NL1Y62400071.