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 0xf2c883ef1c1eac6168e543e23c8d7616f137bd193d60cbb9c71382aab369299f. 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/993f48fa-2a9d-4ea2-be40-ecef225e8660.json and https://artists.proofprofile.net/proofs/artist/993f48fa-2a9d-4ea2-be40-ecef225e8660.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 0x1286da983ba4af4efd888af7733e39d073f671facd186d00b788b0aa3b0be8bc. 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/DEX402200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd34775fe6dd24baec24912f8c9ccf3006978b473b054912c9fbd80248e8bead. 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/DEX402200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f6891c7e75dea0b35c30800b9cd488e387e7544c1cbb0c0a2f822b36d31905. 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/DEX402200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd67507b640429d3829b59b751b909ba73188d6d39233dbb7da9cb064cc94ef9. 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/DEX402200012.
Allergrößter Wunsch (feat. Fidi Steinbeck)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d5f2ce8c69a3fb5e60abda4843480242746c47be78dd8b018aa5eac14af813. 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/DEC712410855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466af34f41c902d0930b5aff398631f57f55b4f157cfa460d94165219fa90e56. 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/DEX402400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1286da983ba4af4efd888af7733e39d073f671facd186d00b788b0aa3b0be8bc. 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/DEX402200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520835103d98dceab7b07bdd8ec225b94f3eb2c8fb64604a9f8bfac19cd93a4c. 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/DEX402100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83eb3d64f31c0b6b3f55e3e7feda845041559f10ac882bdb0a1f7cb6276f25b. 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/DEX402000444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eb04a784d0495ef8d6cee3edcef431f7b267afe8eef56b76546cf3f86c6087. 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/DEUM71906619.
Eine große Überraschung (feat. Deine Freunde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16a2421dc19c4f1932ad9663ea4498041514986e67ed5364149045c7219a08. 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/DEC712411815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94d6bed2cac12f7fbf335f7c8f9bcebda5ffdb502dce7eb795f3fa862ae6c6a. 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/DEC712406558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb644d14e9f739bc7571cf382cc904e4fad1e667111c1f1e055dbee188fb83fff. 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/DEC712408966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb8f730c11c21f6f60f5bb1987b144817888d376e7098534847f05ed498c208. 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/DEC712411816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c853ecf1ededb7f8b4750053021aa5c7272b0da169be4483dbf255c7544266. 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/DEC712411817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc342ae4a577dd75d80a188d70f6cdf18bc61d83537c6b73b975404bb898562b9. 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/DEC712402117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d5f2ce8c69a3fb5e60abda4843480242746c47be78dd8b018aa5eac14af813. 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/DEC712410855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29def9cc871bcc40cbcd974bc65f540f456217ff1c1bceb976fb8478aa607281. 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/DEC712411818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513e92d5f8c4314a102eccdee7aebd63a2f033038278a33b604d12ade0f64fd4. 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/DEC712415130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ed3eeef2f83ed0911e46e29095b867c5838b8a06671ee8e59ef650b14c3ca. 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/DERA12200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24b79a3f4db72d20f33d309f4f54eb8e11cd8a6bf0f8a88b0bdda19c7a32f01. 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/DEBL61800930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9798313ebdec4223aec008fd56e4cf61adee55c85b083db71ee2ba4f8c955718. 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/DGA052099373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7ea697049bd09e17d98935b95a1727da580a16b49b80006978693d149df4ed. 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/DEBL61800932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495ea3eb46ade8ecf208baf76b244b09274a9002104c74643ac47f1bdca33f0b. 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/FRX202029900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f03d905e66cacead81f6aacebca12bc8da69b892284b3a65549f024305668b1. 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/DEBL61800934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75ec8224104f7c41de19616a89b79cc7aea6932d6a64e61a055448a60c765ff. 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/DEBL61800936.