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 0xa34e897e965bc6cce6746609993138328b425981b18e6b6f18524054979275c0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e611fe8-a6f1-47b9-9b1b-37d6e3833798.json and https://artists.proofprofile.net/proofs/artist/7e611fe8-a6f1-47b9-9b1b-37d6e3833798.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 0x31fd08750daa25a9c48276ba235ff306bc1dc1f32cfb856b5e412fe62edbb77c. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/RUA1D1812879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74648ddcdccbeab0c736e0185715a441e6e0f2697401af0bc5866a608509178f. 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/FR96X1881873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a65ef21dec89b364279a41624a52a25321fed8d6185500f9d01784e9f28744. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/RUB421900534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6e6162bf6154346ca4a57ee60325d7c12378498386c81289acb4b6be99d1f3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RUB421900536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680db266c2c03d9acaa161f61e3b66d3151567a97fdbf7525c820e407cef0ea2. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RUA0G1900349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4bb1acaf68185d2aae95724def9da99e253496e6e97103e677fca532fbf856. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUB422000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea9ed91944ad7c0fef5da060f590d9877aad3c9c28d79d66252681209bd744. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:11:10Z), 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/RUB422002533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8252fd251e99412fbaf21de4d701b99c8b5522ffc90f44b841c8626a465104b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUB422101479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eedf912e8c494a8647a9de0d8a251bec832b09e9550164f3c25867bc591b67. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUB422101239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921fb8c3534fef836d20260bcb143ca43a3adaec9c9a180cc513a1a0bb61b96c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUB422102845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bae8e7a802b2563843cf86454f61c8380b6d379c80d693d6bd29efa9c87f45. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/RUB422301598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9736e06bec638872e1e1b6b5aff514c7f320c9a0068fa06360faef1a7fc694d3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUB422401169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d179ed5ff765e70372d278c8ae3376eb8142673cd6ae951f1ab661e5d35fd45. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUB422401482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23639eff4016dd4983475d6e21dc0e202c9b708100a32e670d1bc8c1d94073d2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RUB422500875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802afbecde527f2e2a7872c96f0ab53f7eb0854f5500b78dff62f77a520bffde. 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/QZL5N2332366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775fa26e4d97af9445a709b9bd496eb64a0f2cd036a485bdc2b7e20ef38f1452. 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/RUUM72000756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc471c6d1be30210c4c4cfef6938f9070e6c1b9b5f4fc1e83e45a20fac246e518. 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/RUAH62417855.