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 0xf3ae13ee5d24cc35cb36a84421a2ef9e17eb9d63bd38ebb5c0fd97323ef8a149. 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/dc037f5a-52b3-4f0e-b9e2-68f38c31352c.json and https://artists.proofprofile.net/proofs/artist/dc037f5a-52b3-4f0e-b9e2-68f38c31352c.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 0x2a66049e2de75f93d13646d874fe2f9619c3f59ab952b78966d584a2965b369b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CH6542317142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c7f6430086d14ad6baec85dbfff0443c802e3efd87679054b3ac4d4884fa1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH6542324159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d06e60e193e48b5dbec893fb7ab4c3555d13b76e32305ebed0c268f8d9c3a3. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CH6542320758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860044417305a4a2d3b6e0bb2305385919dcad18ae1c409cc7af8842b907804e. 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/CH6542172772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53573b1f687287292d5dcf882b205f6abbc6308439b93d246949ed665cd60e65. 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/CH6542172773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a5e61278269ae5dae77fed346651ea3bd8b3956d873864e1d605baf491a7a. 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/CH6542157137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1420a6a085e5d22819d2885c7e1afca8b691943dec36030f730665b60db965a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542172774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4099129b28b46abef52c7ab1dd908d6f3c9158941493fe9af226855dc944c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542172775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406cd31cecf64fc5a2aa2b27e8ca2301cdb703204feebb48942bc6f87a9ed361. 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/CH6542172776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee48c62b7b4c43f83e76e698c89dc3a08a88ed58b079dd7fc3a981f83eea839. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CH6542172777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4788cb54e50e6884acfb5b079d4183858dd66cb8a99b4bb96298a5406c2c1867. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/CH6542344592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0e180bd896859f9c2c670c4372c2d0050d537484c5d20c2185d2e00d86b96. 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/CH6542229919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a5e61278269ae5dae77fed346651ea3bd8b3956d873864e1d605baf491a7a. 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/CH6542157137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc49d6543191bffb2f027d2a27b2bafe7bc6e6a8c326f39bca1c2134b6c5dacf. 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/CH6541629798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc855ecc0c235be04ccf31aa362163613b8d4d07739555ccaed289be94978a3df. 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/CH6541629799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa618da6dda3498461cc0a04e481029b030096c4ff3d69adc3a37400da29b3cc3. 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/CH6541629800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a080f53d5d9f74eed24ab919b952244d12099138b5a7cfed22194ab756653. 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/CH6541629801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dcbdf4e62778b6162e68015e460291a22c79d420becae441eaa992328e5998. 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/CH6541629802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafc074837eba6bf7e19f06164d52bf8e96a81a815abc9188ba81fbf816aefbc. 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/UK8SW7000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0183a18fa30a0f0397064b440f40d8fe5e571e2228f570e307e455cea6100c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/UKEZQ1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93897ed6936407a0619432f12d1ca02107b55c03d207c9905e043e9fa3d2e192. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBKQU1740824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca444dcfc4720024be00482ae6efc81eacc44e8922c34f68edf30752439ce6f. 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/QZ4JJ1675986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f05ed97d738980da737461623e5331d4a755350733439fefa269363480a90c6. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBKQU1740825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d9b07516015e857cb609cec075548f17fdaad4cf81272689ed399c424b7852. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBSWL1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7162a37cf94324d50271fde3dbd0cfdec6440649e6e4b1b10c4dfc35ea3c6a1e. 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/NORDX1701020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c971f8cfd1c0fc15c37ee33839ceeb091d87035d8c5c8348fff09dd87b5315. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU1740826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe6cdb8576ecd8e49d9eb3ebfe0f6b061179d832d730f2540283614a139b6af. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBJX34616004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672bc0f9c1286458345091fdcec60a0a608a83ea32582846234717f9b694f0c5. 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/GBSWL1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904063c39fd543f2eb50eda4e977bba0b382aeb0175106c75a3e8e023966be2c. 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/GBKQU1740827.
Sessions II - Untitled Track 1 - Balearic Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94e1ed1620ea0d3fafa3841ea08c80d6a31328d5864018549911f6d8991afd. 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/GBKQU1740828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb800bfb96f9e84f8edd8deb7f6a00f78079fc21a636dbe7e85c9b5ab02232adc. 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/CH6542359946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1676e8815e046f0770ba815b1e8a26ddb31a3113e3e4ed6adc33492a73e5dc2e. 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/UKU932481967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0458b55430ff3f9c0310f37d24fdb2a6571dfe537cad659b3e2c89cea48eee7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6541831688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecd61a9918d06d891a3325c1bfa0629b52c77ed58f7c53085044a0d5f5519b9. 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/CH6541831692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e3e80cafdd9b51284bd1da2537e1637c3026cf44feade0d850041958ef7e37. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH6541831694.
Aeroplane + Fuga Ronto & Chris Coco Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd76488a033255190ec1f9039d277498913ab5e848cdcf8319329e05442899a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH6541768686.