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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862fd24e978b1cb336f618a1d1634eeb085613f2a8a05ced74961ef5d4ea6407. 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/cc164393-ec76-458a-8385-e14e04608697.json and https://artists.proofprofile.net/proofs/artist/cc164393-ec76-458a-8385-e14e04608697.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717921980ba84ba6b58cb810dd118a3013cb8455158bd72a616f9c784d2fb346. 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/QZK6G2055150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94027a60cae593be55d60b51e5bcb42355c6e657b528ba43fcc1a6e58d1c774. 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/QZK6G2055151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52f32fe1b70b39fbaab2fe1f0c4e504b7c0bf07bb91b91acbb0f2865726e699. 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/QZK6G2055152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ceb4a4011fc3c2215dcc32ab4e8e1c5633b5d83298e5d223825b8e29f12309. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6G2055153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c9fbb222d843f5a832af017fe3befb961e906613bd278e19cb588618ab5564. 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/QZK6G2055154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552f112ab3ad5c33783b768540e93fe000dda709646ce054083021c5a209c3d7. 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/QZK6G2055155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fbd157f51dba19c1895ed9882810a639ec93f9d86a7b2a4fa26975300f3cc8. 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/QZK6G2055156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbbd0352d8f3bf60b3a1949cd32c2ca70f0d701b72a92463e1827329556c350. 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/QZK6G2055157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda9f27462903c34382135c3ba52371578c38827f3f6cf272abe50a37808a698. 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/QZK6G2055158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de3af2847db69190a44804aba7b02355dadc7cf0c528fd004967a8fc2f9a6d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB22205084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367e40bb3db76098c32a44858d5ad8bd52dcf9a7dbb788310b8aeda661db97b9. 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/QZTB22205085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb080c05271dc7a450406458bc89b6e4f99c07644e22683535e977f97ed4b79b9. 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/QZTB22205086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc9c6e76127f5c0485257dcad8fba9002a82d1818a89478cbc67cd72965b958. 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/QZTB22205087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f34dddd97f34ac10186dae5d9a8d477c4cd7f4ef12dc9c7e061ab51826d13a. 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/QZTB22205089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30487be4107fef30e3c6a4f9e7e5f8cc335104bad706a792bd0661c82bd59e7. 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/QZTB22205091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3742df09793c599f903e003601210f36634ce789b45c341fb5647d09a38655f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12351464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433966226c6fe189ccbda3abe91f37ab6ab5e063a1d926224c6a8ac8b1893f03. 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/QZTBC2355946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c65a88dec56bd9111b576f1067a91ab0ad62379555ccf25185d3e7915cd828. 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/QZTBC2355947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98850c5c57d15acf8d85bad1e579c3cfd55a63daad2bbf6b7443af285183ad9. 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/FR9W12332782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ef7cf13e6d731e74d1a8018c3d5c3b18a521c60026acda9bfd13c1d90c21ba. 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/FR9W12332783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cdfe40d8675e653f7fd98be3f5d0ab34447876a4de3a7ee96618c965b253bd. 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/FR9W12332784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd5b1699b8f8f768a254d9ed6f73cb2e7b15a9a4838aaa4abc696c97023b237. 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/FR9W12332785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1300b9cb96f2bd2d23f0936e1b8c9b13436ca5b806b8f9227d51c855822845. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12332786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2497d5ae27a4878662c561641108363a5f46ad4757d895bd1135ae92df04b2ff. 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/FR9W12332787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f34dddd97f34ac10186dae5d9a8d477c4cd7f4ef12dc9c7e061ab51826d13a. 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/QZTB22205089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367e40bb3db76098c32a44858d5ad8bd52dcf9a7dbb788310b8aeda661db97b9. 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/QZTB22205085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30487be4107fef30e3c6a4f9e7e5f8cc335104bad706a792bd0661c82bd59e7. 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/QZTB22205091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc9c6e76127f5c0485257dcad8fba9002a82d1818a89478cbc67cd72965b958. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB22205087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb080c05271dc7a450406458bc89b6e4f99c07644e22683535e977f97ed4b79b9. 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/QZTB22205086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03962e51bce53283bf26af7622cb86ad5942c1aea16e8f9be2c7dca8ed98cc7. 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/QZNWQ2035023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf950ce3479e661f6cb51008f79cf980736ba38794e8b8f4830d59acce3c9229. 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/QZNWQ2035024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa755fcf43cf4e173395188710d4421ff0afe95f23648e6fc6894c21989dcc459. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWQ2035025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc188d10cb379a6e222536f5b8719ce83709452d776fa60a27893a9f2bfa50340. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZNWQ2035026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4828af21686b941acfab26db13b0f4778fde8567f8a222a5eaf705d72ccb7d4a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWQ2035028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f87b655a251eb30a43f38e4bbbe81b83cbf339eb22d433d54f2b513ef336116. 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/QZDA82025791.