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 0x8e927ff7dd5c351f0cb421a7b203f3554b9ea25c0471f5034b4d757c444ec23b. 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/c301432c-637d-4abc-8a48-f80f414716ae.json and https://artists.proofprofile.net/proofs/artist/c301432c-637d-4abc-8a48-f80f414716ae.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 0x733f34abf95dc559d97fce3799ae1d3959f17b2856974704f0ddb87ac294c188. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCABX1467651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fa90fca87c27d2ce733b81d426c40c5924128486d1f8d8be1001276d09431f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCABX1467655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae88143e52d883ac68cf90fbf378218b93c97ad91c0b80a9bca7f45ba9d162b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCABX1467659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda36e92eefabbdaec10fc5f23146b3a79c4d1dd7a9560601fc25890f5b6d4881. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCABX1467660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97e8ed069b30da191b0aa2c45ed2b30902963ddef62703966de0fe8eb9dc552. 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/TCACG1509338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715e45d0940f3fdf39597cd62df9f34c989e4b4d78cb7c9677fa9f4724bc3e83. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCACG1509340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd15adf889a3f1ace0cfc47565b29449fc6b6e5312841533725af2aeacf51a4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCACG1509342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318e3f9f700c4110e7821c66f7d2e2ea1614aafaca65c5f4798d2c0a2b52decd. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/TCACG1509344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae81c01d2d0c645dc5c3c986ead66afa9ca521fed1c579aa5078cc5643e6edf. 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/TCACG1509345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa992a2e2ed5692fd0a4558029d0afebbf0eda957cf38b793758bd46239e7f074. 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/TCACG1509373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dfb7518f9e5579228bc37ed0ce21acaa15508992f9820c30774c28e9790cd8. 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/TCACG1509378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dd04456bbe5eef7198a9648326f1c3620945987d996739b613c1e1429cdc16. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/TCADC1733816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a1f9785d0c730009b06d0b24ffb21a553c52cbaffcdf5d860aa26ac129945d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCADC1733823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ebc194657c94eede6c4cab8976330a563c02abeda3fab7627c049208356d07. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/TCADC1733824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf115b90a1348043e8d3b1c965b45214f61d565a7ffbc8dee818ab23a35122ea8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADC1733825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031fbdf908b27e4e2952978b988393ab40056a84b25a03f86e1893f137f10c9e. 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/TCADC1733826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808820b320edf340f7f2be6f16492870ab8b89f4bdfa7735530c944fe2430993. 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/TCADC1733829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283c1c2dda9e53274b3116e3403d5cbb58e61084567dd8b071feb49e5c620399. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCADC1733831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52daff9f148f57ce6322e513bf7bd87ba32e33b9800783224d9662eba874263d. 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/TCADC1733835.
Arrival Short Film (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30f7087cb943219493fc3cb65d249c451b1a2d5139609eb9333c47083bb01ee. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADT1805151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee1b0381519746e2b7cd2ac965fbadb5e75d8fceb777abb74837be49156b53b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCADT1805154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcb231644c5353a840e1ae4c8d473d3d2b418ede3832f2fedc8dd5bf0c87b87. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCADT1805157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3702566077b4ca1b23651a155228ad9f86f110261f36d1d5034f84c990c28ffd. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCADT1805160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cddbb23c8ed81fdbafee44398e184fd402fe3b2f42c307d0256c692dcfc02ce. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCADT1805161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0a3a6e3b291ec984e763ea4bab907bb5ea589a4472b8a71cb4b1590c4148f4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAEI1959985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf510ce90ebf14a80112503395273c8be069f907857efa9a89ffb886773058549. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TCAEI1960069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d75a69cc1344b28dbf37f0af6d69bb6cf1914a79e985d43b5d4aaa78893a32b. 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/TCAEI1960089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06be869d7ef847d7b8398453a3a28e6859227530886c2585ccfa34131256beff. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCAEI1960107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f50e55f8de6f20cc99cf6a9ef1ac1bb2683d101081210763d4a6cc6282ae20. 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/TCAEI1960142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3baa8ba73e49edaf18da36797657a33361797411527f41cffb354cc5d7fe8a0. 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/TCAET2020649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138892cf0cf7d98b8c66c8f695860e3b0660192db8f3344ee466b24da4affd8b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAET2020654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85606b12573f5ba361cd27fca63a99c8afc0e74b50ba32b459e4e79221994e2c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCAET2020700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616f2bfbab89906ad121a3afa2c31b564c798e217c080e733bd935280054f3f4. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/TCAFM2145354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a33ddb4708e52ca4d10ebcfa020ec8bc1dc01869642623a6932500ede23855. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCAFT2111910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400a3d6e8c97a850663a7bff39ca7923dbdcde694a978481c67d62e27ab2bdc1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAGJ2237660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cbe68abf15e049b950588f09050a0a6e05fe538b1379dcf202b012589cd52d. 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/TCAGJ2237691.
Tales of Fablecraft (Original Soundtrack Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde740c000205de48a6b74b212bcb065ea808c8e1442b7186e6cd1938c4cc4ea1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZFZ62582451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b32d93cbb595f3b50cb58733bfa48b3132755a89ec0b57de441aa688962b8. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZFZ62582457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586e5adcae690ccf89721c3509771f0002e636c3e7cd7150d9d0443aaf9f0cd5. 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/QZFZ62582460.