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 0x7b9ca461fc0dc95fe6bb056e334c0b762046babd64b2e81c471d12681a8c7ec3. 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/54b0dde7-fa9d-43da-acda-4d4774724e24.json and https://artists.proofprofile.net/proofs/artist/54b0dde7-fa9d-43da-acda-4d4774724e24.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 0x9e3f62431738823af515632c953de544bbf108c2bbe04727d747c45d61596516. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2448536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022bb0cf64d887b864bbe0ab7ebebfba4e4122a65ea080442dd8d79e16b4e4a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USANG2448543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bc1b1b152d23837c920291b4aef10ec89ca070dd11df669ebf355878c8c4b5. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USANG2451120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ad986f841d7db465bc3788d53f507645bcfe8d6dd2fd4df6bdfbdf70283538. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USANG2451122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9378623a4e8bbb0473d2922148c71969e9ba3a81a3551efc05664ecadd965af8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USANG2451124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9f2cfcd65c928cd60aeb7c92f60e9a3c23fe9ad28bbae0060c51dc66af7106. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USANG2451125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38eaef7fd104a3bf0e853a4ddc9914ec6c7e048f6647fa776d97fb3fc8020c69. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USANG2451129.
give me novacaine / she's a rebel - lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cc774c13b80176e142adf8396afefc7bc069fbf516d83df945c116ab7c2e55. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USANG2451130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85af0a48a12e88cf410e48ed6fa92a98845623bcd511dfa05c37331c03e5a00b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USANG2451131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab44806b0ba3fa5584f83341a503182ccc9821249a5016a611c22a52ee9f210. 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/USANG2451135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c7e921da9cb9b9a6777d9b617d810b08ca48b4aa98f3a1f02f04e71359632. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USANG2430529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68799318016fa4a278f3b4f5f5e5df0ab6ac801a263628ae335583fca102cf7d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USANG2430538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94729dc180bd77135b335b725302e1ea6f7a4ca171a628d7a2e8170895b1f07b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USANG2430540.
the adventures of rain dance maggie - lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc90e08d51614cb85b272cd0dd5a7b541ad8f6fe583fbb580e348089cf1363c7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USANG2430542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dce4a9d23b926fde6ced91949a71e7d960f1062c25d44e2945d98f380f16c84. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/USANG2430547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5392c55a10f2f53b10d4db18c5012e0bb0371a25dc7797dd7d16bca783ca3dd. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USANG2430549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d33236dedf6ac9472cce3137bdafc18e396937d24cd7a3c5f875aab1f529199. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USANG2430552.