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 0x766709c37c9f47b69decff55ccf0453ee096a6da0ea7ff957c7c3283ba8f932e. 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/3f8f9541-daeb-4d20-965b-4e366d03247f.json and https://artists.proofprofile.net/proofs/artist/3f8f9541-daeb-4d20-965b-4e366d03247f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shara: Don't Look Back (feat. Pony Express Ministry)
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 0xb62f93eaa34fa212de415fb98455f27a94e6ad985f16ea688e680f5b8db1ce5e. 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/ES5991100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714a74751dd35327bd80e575948ce2878533db03e0a35ddb4f62950e7ee11450. 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/TCACS1697324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732b9021cc8087b7337e779341179efd3f84da82b0d94ab4aced13d67592942f. 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/ES5021000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27edb636f1ac4dfe2c7621787293bde450f99e35cc29b0d67ad71bff4c383a1e. 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/ES5021000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f35fb7cda52d04d349f9ff4df5b2c35661eda495e246f855fb24501edf6964. 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/ES5021000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dce5ec5ea68f10c526054a2a7dfcaab1275a41fd12ae387b01fa9a6a16f5fe. 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/ES5021000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461232f1ab392ac2d585dfce0e35928f339a39ddbcc6223940c178c3a657d7bd. 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/ES5021000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb1f290539d7fba1ef63faabcfaada7f48cacf51f59259690cd39ea755801cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0819ac8860cd20e025fa53dd2164e0b209bbad91c41ce12381e68726ca0ea628. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8469370c8f4d1c2366790e68681801741ab1fe68531e6a082616b9a9060e3d. 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/ES5021000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e724ceb396e7104d7d45939997dadd505c9b69346f30d2f3ea060fd95b1db3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfcf839e5bc697f310570b664a37db3acaf801d6da109dd42c409d1d6dd7c87. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5021000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037dd1cb7946c854c3619255e11060698fc6914db4355d189327396880bbf751. 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/ES5020900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255f1092ae3ccc4a76404c211c72232f9e03bd153ba497c8f257d5a4e6d19819. 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/ES5021000033.
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 0x6e11364854844f915312fa7ebf7a2b5da80f566606bc91fda68783db91f5a420. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES5021000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332093226f9878f9ca14c55c2d7c9b0810917fcfd3a3a9c984a3ac58c8cfb861. 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/ES5021000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f1cc8126c38891d8e0e2bd9daddaea589cc08da23005876ca4f4e0c745a1ed. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/ES5021000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d2e39bdfe66173b6d187978debe6a0a3c69a899845e3767883262782c5aa27. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ES5021000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc83c8b10016790758c4848f890d426229b472d392c962a0450a51cc072475fc. 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/ES5021000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767b0b96742f10b13f5a7db1d01623b1362c5a76e322edd13a401eafceed990d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES5021000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64fd8ea19259e3760b13ad298a2ff395ba17980c7ef363c5f69274d2bda2209. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES5021000045.