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 0x4533f5193ad842b7557191f4b366a67b222763953afea187d0160b53e85f818b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9658baed-af2b-4887-a99c-0f82d8dae9e4.json and https://artists.proofprofile.net/proofs/artist/9658baed-af2b-4887-a99c-0f82d8dae9e4.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 0x0463c577374f876c2840336dc0dae7f2d2e65993ba9044b31535ff81e0984eba. 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/DEA621700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d83deceadaf4f431d0f290e54bbb6b90ccf5dbb3e4635b3ba40fdd40a1ba3. 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/DEA621700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19fb73951991eaec93235d45d8237df5c650f8ca3369bdac27fe01ff3e5e9cc. 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/DEA621700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a49b0693ed6ca5d7e46bf7c475ef4b1f35481f1d57fb3c40d024a66f20b23f. 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/DEA621700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358beca7b8ae24b5b117a57bc2c12655c9b76b5a833b6f9028bb1f42b88abd58. 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/DEA621700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd17ea402c7e967542ba96d0371cf5f2b46be639764f85f1b16cd3061a5229. 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/DEA621700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850066a682aefab2689acede862014a968940145d69527c7fbae9834662b2909. 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/DEA621700145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6413721c46ca8d96db5c53d55db21ba362bf36bc9c6f9f0a8f184fcfa408189e. 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/DEA621700146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f96df1e4366a100e000a4edd6aa81878eb83f2d66e5f36d93e0cbb300112ac. 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/DEA621700172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4605c719cf60cd1751116a738bad615235ba91435746dff4e7b26b423641039e. 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/DEA621700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313bbc37d361bfd03ca4ed1bfbb4ad81c3097bfadf224a3bce6795dede78df57. 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/DEA621700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab8fdece6a2ba90dd301118e459af61e289dc944e2523fba4a9798b68e7072f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEA621700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dbed47e3a3146b234228c95ff96b055bc978e51720635684c494af5053ee26. 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/DEA621700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebb5d1e6bb6e5dc483a0613df4da90d78ecc805815897d8cfc0fbc5682517ff. 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/DEA621700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a9ecb555f4669873535546c17492b1be87596889aa2502218abfc32bb20c9. 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/DEA621700151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06190d2f045da9cc9273eeedb610806674ca92dfc8936b2b10976fcbd3ed32. 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/DEA621700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48189c7214cbd5790e2f317ac57bf624ab416f0ff0d6cebc6ef60b3e57688134. 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/DEA621700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0f1dfa62998f4d0cd017304cabc308136e56458f9a8da275c22da4feab4f54. 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/DEA621700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157d2e462b9c39c7d1e97a14cbd97953c884163f5ec2b2a0fc1a102288da6d51. 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/DEA621700186.
Tor zur Welt - SiNCH Remix; Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ce4fb69fd3a1ea5a2ae7fa6e0b3a344270ec09301c6ad31eea32073dd1a690. 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/DEA621700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1529f9d4e1072e7853b4f7c11fbceffbf720b3b4b95270f6893fc1985d4976. 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/DEA621700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d32946caeb271b797494791de4b90aa028dc49671808362f2155a202886591. 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/DEA621700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcb3d28c4d0c5530b0ecc85c620e0033e387bf9839bef412917a47bc58b5ce9. 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/DEA621700188.
Per aspera ad astra (feat. Mohammed Ali Malik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85381ab6356d820c48985ee9cbf2624c0ad789d0ccd5d28418a9fe2860eb5b1c. 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/DEA621700189.
Per aspera ad astra (feat. Mohammed Ali Malik) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6468d1d6909727651e6e342511ba7230de71e0b4ac75109eccf9dde16198ac96. 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/DEA621700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcbee2caa426d906be56a5602dd7ffb49ad5e19bde83cbd5585b1b77b8f2d05. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEA621700165.
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 0x7c8360d629974701cf3e041e576f79b48d422c9a8cf7586a43fa82e92f8d6d8e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEA621700166.
Wir zwei (feat. Credibil) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f004e7a89368a63008b2ce5dc4168d0c6ea602bdaefb41703bcb72188c636f. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEA621700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffce39d5d64b41a82a6a70360f46d01f6ff931912ae407eaa1fb762e82acfdaf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA621700168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a5d8c7beef56402250c7d836fa69fe7e8636b86c5f3a9f4b4c7fb8482e999b. 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/DEA621700169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8eba2f03d5795998c57bab37398d2a20efb67c924a37d331f5b244f92e90d8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA621700170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf520813673276add77a914b9b01600154778a18adbdc0ab44d28f7bbcbed8387. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEA621700171.
Geteiltes Leid (feat. Liedfett) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3abc039390dcfdb71ab94849285c4ec4dd68590ea907a577d7c05c5c00e447. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEA621700173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7687e5edb933b159ba9f614b839a2be685902ea223c639e369bb0a0f17f2ff9b. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEA621700175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bb1a98451569cfc2d5534e1e4afd900c3589971445524f9ba0c39bd03726f6. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEA621700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0e089f9abf3f1fe67ab19c1a04e108857dfc5ccfe6f74f1a8bddb506e4f66a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEA621700177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff13889ddadad6e74442510e5018fe71caa10f0098d7465fe150125eeb8f1dd. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEA621700178.
Konsum (feat. Tua) - Farhot Remix; Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1132d23c3803addad3ab67ff6fedd31446143e436b62dbaf85bb755b88bee149. 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/DEA621700182.