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 0xbc112983ae1378df3da5ba8de64b49129b63656b268e8e623b859aca4604b06a. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f63fec70-990d-4efd-97ab-3fca2e9acd9e.json and https://artists.proofprofile.net/proofs/artist/f63fec70-990d-4efd-97ab-3fca2e9acd9e.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 0x7446cab6b8e8a91cf2aedff4b025df68f863736333f191ea51f88e392a01ae50. 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/FRX202207217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d891849c001042fc4760624dc622b20c7a5f9abc5c39f51002dfb1ca503b41. 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/GX3Q92146852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0eae6857a2fff43ff07326bc5ae5decd27d85badf0c864914867bec32b8b56. 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/GX3Q92146853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c57253e44412078e4dae2f771a2361f2bbdfe4c2b08f3f01a5950c590c3cecb. 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/GBUM72400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647ec7c0bd624bfe38af0505b5147eac714c9921926e65efb1b2f4e3ad727fa7. 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/GBUM72400533.
Ten Toes (feat. MC Spyda, General Levy & Eksman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a7ead105b4d5cadca7b1a062b60de7abc6633ddd650e5b4a7ab7dac56d726b. 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/GBUM72401387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120dbc81bfd4c44f03f080a929ee6bfbc343af79d5a18fd11a89372707688cd7. 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/GBUM72400535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a7b85768717bdda34c0991cb47844a6fbcc427180fa42516df8ff553afc5d. 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/GBUM72400549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94515cfa1ee775b41157cafbbf1e2fcc531b053622dd675a80c8048d3235666c. 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/GBUM72400551.
Is What It Is (feat. Songer & A Little Sound)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be7f3d430b9060900862b5c283176b0f5ce275326b450e618a45ef1b4e99f0b. 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/GBUM72400552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3aad86e7313849f280d5b4480a86ca74fd8349cb48818426e9ffd507516cfd. 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/GBUM72400281.
Stole (feat. Bou, Maverick Sabre & Jah Digga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f8c4b26f5130023de3bdefa3eb3790ca322dbb526341271ee616c8a8a6ae9a. 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/GBUM72400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc613cafb93f18bb1ba3b9f8f7637b5e55612ac79b80d4e65085715bfc7a004e1. 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/GBUM72400555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b264f66be6ba36561e13fdbf3d8ca69345e7f26db3c92647943536dd4ea1121. 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/GBUM72400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc48964f141ef23214e2312f942ea5d0664fd68c72dd57b19d09fe8460ce8e. 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/GBUM72400556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35387153bc4123bba7d3aa60701f8cfd366d3882e418314fffe422a6e0e496d. 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/GBUM72200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a7396e4f80eaeef872a9d9eef4805f293aa41fa588163ef1f2ceffd4fc39e1. 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/GBUM72400557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaabf052c83fa58187d2bfe2d70451afdaa227b152c2c2d567e459d0794ef761. 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/GBUM72400558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62deee7116a3e9f2e5bab8414fc048c7c5d1042a3b89c34875715b48aa0186bd. 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/AUXN22285149.