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 0x6be8f50f231a4d6abaf96d03e2ae713f4156b2792dfe5494080cf2dce479218c. 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/9f4132f0-aa10-4a86-82b1-da69dc7d0af8.json and https://artists.proofprofile.net/proofs/artist/9f4132f0-aa10-4a86-82b1-da69dc7d0af8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Natürliche Gelassenheit durch Wasserplätschern
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 0xbfb6ea2a044a1ffc68b6e3c5a229ed1fbc7f4c407c5f781c9d6cc5dd3444193e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:19Z), 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/GBMJG2013979.
Vögel Im Wald, Natürliche Geräusche (Loop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29c1b01b014d4fc4d4b089257119602977fb8025cdf244410c16c48a91fda37. 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/PL50G2401585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14f11766c7466aaeabaf83e7ebef150acda3427dab2d97ef64407599a47e550. 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/PL50G2401586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a3e64306e54fe8f2dc213a3908555a44cc91c99ef4c6e8d2e4ce24ec930bc7. 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/PL50G2401587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38da2da65553118d83641382c03c960102d48896114f8a2a68a573c0e43ce2ab. 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/PL50G2401588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c03898a464a8fe043c2345c558bcbc87ef613590b553b3389c71024c49828a. 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/PL50G2401589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa850dc4484b705009ac423921e7f86de8bcdcc878cf324af78e0e81b282055. 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/PL50G2401590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774885da7bcb146ae8b3848cb125c1fbf5c8928b1b1864e9cca76f7e26ce0d46. 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/PL50G2401591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c478df0624d460f7b57b269cc0586c67de448258fc549de8e94435e563575e. 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/PL50G2401592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1dabaa48fda8078f0ad7ff7a0aec0f1cbb2efc85a95f94c49ae7d45bb0ab47. 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/PL50G2102654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcb472ae3895feb00a505840e6be8ce8138bd74a5c369fd95e548d0767f4230. 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/PL50G2102655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981ebf2cb5af48e12c7cca0de4139c7861374c168d153ffc8142b7ac05dafc6a. 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/PL50G2103159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e6d376187872d60aab1020cffab8e6e30cec9e61e3538e6bf43c4d16b4e3d3. 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/PL50G2204566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbc5586198febee6983bfd66b34bc766b5ec8e7111b32e5910466198ae6267. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PL50G2102910.
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 0x3e412cbb589cefe8fd28341dcf99906ad01edafc1f607a66a216c8a2901269a8. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PL50G2102911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ebb9ef968ce3382c3f59c4174d3222c76fbbcfa63ad13ca206167dbeed5005. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PL50G2103158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf91b8e43160919a86bd3f5334d4d8b816f7d716fd2a1fbd2053fda9c3d2f45. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PL50G2104438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974fd7d1c05d0c55cbde7bdffd982bb9685f70e8de5dffb6b79958a62d453af9. 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/PL50G2204567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e93c61b6b9865eca518632e083fa0aa2ba297e0905551a5faaca031975fb0ff. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/PL50G2205078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5e6c122ec0fc59a0f45a03325310d367c481b7611f22d82e74463dd9156f5b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/PL50G2205079.