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 0x4085b8eb956ca52cb02b13027a33c65bbeb93d0dd6af0759c369ec86cd331fa6. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f84601e-7eb0-45ef-867e-89aeabed9205.json and https://artists.proofprofile.net/proofs/artist/3f84601e-7eb0-45ef-867e-89aeabed9205.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It Is What It Is... Born to Lose, Live to Win
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 0xbf18eeede5c422f9d3e4115fd6dc99c7d8cadffb2789e99ac235ac9cf0eb1624. 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/USHM90883938.
Family Affair, Murderers Come With Smiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bd305c7bd9fb6aac6300e2a6cad966b7a6c35b8cfc5314aee97d9e8e611674. 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/USHM90883939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97b5cdca2ab7406e75cd42a8d45384b1dfb592436c9073e74a1efe8932520c5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM90883940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f37b5544065d7dacd1408588ac7bb714ff95315a33fc393a3d64d381553c939. 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/USHM90883943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5062734e5e463bc81890158c1eade9e9d24b81d90f31659635ec398dcaad0a0e. 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/USHM90883946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d7c26f68f97e9da29382b943e6ef841ac5b4e1405abbbe5e5be5575f30aa1a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USHM90883937.
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 0x4f05d648c3ae4ebd8fb581c7a8cf550778c0a82dd8a879632086c33b516abfeb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USHM90883941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64116af116af7f8dfaa8174f73d90cfbb1406299d12e3bd33483d172e4d70590. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USHM90883942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6442650154659c86907c96568252e724f426fe58f94b7dc2ee5b83839820d06e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USHM90883944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8754df4be47d7cb1012d5c565cc47cd523acdcda32dc28f6615878d5bf1652b3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USHM90883945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0262b7dee48532e3196ffce92449a631db611cbc29733bbe6682180880b45d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM90883947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb434772aa4d1d69ecf5523d3af780845ad81e3e2e075e94c580f6edeaee1767. 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/USHM90883948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000768a7cd00527b3e0d955681d92ba420130c4f500fea4a24a833013b8e9ef8. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USHM90883949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef22f4da877be26b056c90ee994c36d1f8620952c0936a30b21915b32036125. 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/FRX762078468.
Nice Place to Visit but You Wouldn´T Want to Live Here
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ab4840d7bdf974e8c496b0f479f2d5fa5b47c74a8e53ae29bdee4951b6332b. 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/FRX762078469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7bcb44e8f3adb033c5cdd42125bd3872bc679cd944f42023e0afa8fd21132f. 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/FRX762078472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f2bef9c59969bbb350f8c574751ee7ef98fe7283a84873a12df29985a6b9c0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX762078477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9fa4fa277ea477744971dfdd1825ecd283f3e2927bf88942d89291aa638046. 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/FRX762078478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff1f513cbae4306ad202393f9b84cf4ea572991e5adaa36b48e334f66d33af6. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/FRX762078470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a145b1887e7935a93bf1e356e2aaebb0ec0d14534b323325fa9d6d33fe78f0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX762078471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709312db6590155e1b9b5dcd84db1e1c749bc6ab962ff95eb8ef06d3d51c1876. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FRX762078473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48d4a7cdac4640dd07f7baf20fef8af3687103594ce57135dc3d9636b4a2975. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FRX762078474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb826e1b1d6aca705916b4f875892d54648fe802af25858af3acd4d4e001c396. 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/FRX762078475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fc7474eb65ba3428deeca6862af9dd0f30917066494642ab27c2b0822b09aa. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FRX762078476.