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 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 0x75e3e98570e504eced515a71db68219415280dd57582238ad258962b559892f6. 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/7f815b88-d1f0-44cd-8995-2807179c750c.json and https://artists.proofprofile.net/proofs/artist/7f815b88-d1f0-44cd-8995-2807179c750c.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 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 0xe75eb9ad82cc326720119fb2e36298ad0aa1cad9139bbb325f779662cad3ff9e. 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/USNRS2241711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7855addc98e40abb050b65bdcd1a6c3d2b21ecc821fd82d5d47d999c67a88a66. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USNRS2241712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fe050309acfd62928b715378bda6508f26a8ff0957b839a9415ed5717bba65. 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/GBJAJ2100743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd362ee661399d2973c71e4b8b5e1ac0960f2ace91ad35f979d0b851bcb3a9e. 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/CA5KR2263182.
God Save The Groove Vol. 1 (Presented by Simon Kidzoo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bfcf2a03f9df10d35c39ab4803500fd1126acadca6baf3e990997357e0820c. 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/USNRS2342642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ba6feef366d7735fbf131dcf6f6669b383ff099829e3cff8edf8634a63aeba. 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/GBJAJ2200771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0169f5cab2c07b68af7bb877c076497b013474327df1d38352bbe738b179aa3a. 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/GBJX32278003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dbf783c9cd45dc7e875ab82b6933defd6eafca8fd40795adb31f7139ac455e. 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/GBJX32278004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea50581c5e6462222b22badb51428cb55dfaa8721ba16f75bc358aa453679532. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLZ542101825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad49b373975f3144aa2f62dcf223109ac573f05601d5939babbe46582691b10. 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/DGA052049974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe160812a97a6fe78d4880acdaf4c17be2e0893d7068d504aeabbf1f0b896c4d1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBKQU2527478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe470b2ff411f95b0284692cec08ce3ad6992c17ff476aa3177acc3330d985a7d. 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/GBKQU2520110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9a1a980990e7ee305b7e8ce5f8dd8585631a755fb3ac7946517a868c3bf7c8. 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/GBLV62418187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbc5e22de1e055c102366f938e9620b0ab45316416580acffed9be742a5c1ad. 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/GBLV62418188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ab7ab6751bc6e04d84759fd2eed0e720352515a4439e580710c70515ac2277. 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/GBLV62418189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21b3a049991db620fb4174036941a1983deba084cfdcdc8042b6a2a546cc8d2. 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/GBCPZ2424036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef24ddb9833225d22bd8572b7cffbaf5f090da31478d4618c03c3f1551df22. 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/GBCPZ2424037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4a0e8a70627d6f018ec783a2a75b75b99d20b283b581df115a27196f05e7a. 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/GBCPZ2424033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e082b4d25978c641d3698629012dbcb3b5ea3ab7d617aedd5e7ca04c9bdcc3. 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/GBKQU2481539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62fa0d0b24d8f0028d0dc094981e27b948b64d5e1f8d74086b3ba69b3d00ee1. 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/QM7282417394.