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 0xbf10677665e24661290be534a4d03a4172609298cc0210705a34fc36e9ed23a9. 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/b3c2a98a-3731-4065-806e-1c84110bcccc.json and https://artists.proofprofile.net/proofs/artist/b3c2a98a-3731-4065-806e-1c84110bcccc.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5ec85c311e69ec16a4477c19e2a13755094f5aaddd07fbea123a7b8055f46c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CA5KR2302985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e0e956af01a1b7c782c82f610a4fbafd63301eda0057996e4c730ca8036bb2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/CA5KR2302986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cd8686d8e5f983457752423012159a317e2fb3d29339541df75fb46455ab8. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CA5KR2302988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f0cfffc7eda65e5fddd85e6642cb6b2452e50bbbb1bb44a2edecc5108fb93c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CA5KR2302989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d1ff6d214f789a5a7ddc174b59224aef42de120ea0008e3b6c991f8570217f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/CA5KR2302990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3235cc088eddf8c4a03657b9ac5f1a3049efa5847d7b05c0c742871236c76e02. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CA5KR2302991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888875e9c970b71923a08c6810fecf0a564f8202419b8fc6a530227200f72ad6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:07:51Z), 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/CA5KR2302992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd83d089bc2a89bb4d7d83e967151c4ea72211c81e601a507d9c22d789196b7e. 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/CA5KR2302993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e908bf81e32e86225575e7c3d4253593933b2f12540c781135047b4334691d9. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:09:05Z), 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/CA5KR2302994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956f8555221e96c965db659e3e00f27560bc7eb86d3dc96c9b6b2b342f2ebfa8. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USCGH1312083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecd5bd8faac6d3c55e9858d1e7166239e2b5fd39f78f3acac218a72b9a3bf9a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:47:04Z), 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/USCGH1312084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850c64fb679ae3467ccecf71c7692b17c059579c4ac7f7feaa3af78c2c95e9b1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:53Z), 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/USCGH1312086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4e4ebe8b721983f518d36c7735949a802d328f2375eae4ab9bac3e30e523de. 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/USCGH1312089.
Conocimiento Es Poder, Combate la Ignorancia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c56c0dd998246dd8dd8947ab28b50118ab7bd51c4163d63fd055ff1bcc5f94. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USHM21845584.
Conocimiento Es Poder Combate la Ignorancia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03c7077cb8bb53408daa6c2e03802e45ebba4c19865aab84eafd1684543e5b4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CA5KR2314417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec76745d5b33553c17e9d276584e53465d055792b40cb8fca2c35824d7cf002. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USL4Q2033127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a7b5ce7af30cb7b1cf9a634f0cb1a03e05728d40d038860f082d759cfc4e1a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CA5KR2310876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087cfcfe13fc3e94883ccfb1fe1aa85ef4d73e829289aafda6e0f7f471fe3df9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CA5KR2310877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f64d0851f808b2bae28286725680f85a156c0483f38d71f95c1adc84de81997. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CA5KR2310879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1634eefc2aa32b73bd9f98db571a845c3f655493532d20aec94a42969eee62cc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:03Z), 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/CA5KR2351720.