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 0xfdefe82e79bb366441382ef978b8ff7d6da793149af7a12b9d2ef12386ff3e01. 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/3a4d7a89-ef02-4dc9-b0f8-f28a14fb83c6.json and https://artists.proofprofile.net/proofs/artist/3a4d7a89-ef02-4dc9-b0f8-f28a14fb83c6.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 0x6b70acbc2ebbf63d5682dffd1a296b68563cf716cac765cc279fdd56467b83b7. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/DEY200900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243ff307f3d2578ba5b144480bec615ebaf06e22cb210972f947308513c98801. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:23Z), 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/DEY201000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99959fb0e82a09bb24ed4020795cc89c174178fbf325d575192ad3e5a38b1a1c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:40Z), 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/DEY201000022.
Pusteblume (Dandelion International Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9502c0f6bf4723dd84b6061a9c0ad6ce003c334565667eea4c5a363609bdeb88. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEY201100002.
Drei Haselnüsse - Daniel Pélé & Raik B. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c86acfeb791b28c1f0fc92a178bffc768c8aa13c04eb0608a4ae1509460acc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:35Z), 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/DEY201100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a0c000151762c2e49f34aae55c05712b5ef5d99ad3d4458eee9c1ff0576809. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DEY201100414.
Drei Haselnüsse - Koen Groeneveld Remix Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f72a3be84d7d4260c66c69427a300ed32ce98f8af7cff5bdff7ca08b0b91b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEY201100515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8221beefbca892d172620b10b20827872b22d3265170628af2dd221512e83b. 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/DEY201300333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc25d67e3b96092520655ddcbeba450b55e6d782f3aa46e6e7c86dc5122774a. 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/DEY201500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198555d7da8c5f00a128a5c2d62d74a5110dd1d992b90a7e2c885a4074e7ef47. 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/DEY201500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f68e3d91a98d1beb3952c360602326655ae5319873772864f1cadc3e56ef93. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/DEY201500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda73ffa4086c2f436739dd23bd965ebf848cc6d522bb55e888f2f599c4e4eabd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEY201500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6350397f96d96d63da00f92f31ce5f436610ea4a2fce9c5017db2f6e309596f. 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/DEY201500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb719337260cef702541e4cb627b1da7db26bfa4be6f3ef0f7b8d21ce36b5ab32. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:56:00Z), 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/DEY201500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4f33c354b3503a89b96fdb22e9c6b4bdee669a51bb7e2405579b1d41141714. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEY201500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd691b84db50a1def262f2f940e1bc610ccf188b6cd21c661dcb734da05be971a. 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/DEZ622000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb825f174ff4ce6b4a0fab1164c4d0f2d3362695bdec219bcf054985e72faff58. 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/DEN062300845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3395527fad99a4a7563aa581b612d761d58f914b2362fab9a86e432a9d1204f9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEN062400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb825f174ff4ce6b4a0fab1164c4d0f2d3362695bdec219bcf054985e72faff58. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEN062300845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59daf5266a24377808a33a934d45795ec8276b8e4593b34c2bb443e399ed6af. 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/DEN062400759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59daf5266a24377808a33a934d45795ec8276b8e4593b34c2bb443e399ed6af. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEN062400759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c76d8d0f375c37b58b1375081571f65c9a54728b62c88cdc09d63909b25f75. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEN062400781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92850a7ec2cf5081d45d3013f8ae7c90adf4d62b5a1564c3a1ae1093dd4f6650. 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/DEN062400289.