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 0x8b25190cbccb4d470f1a0aa8dca7b00001a51cfae5a4be921d5b437ef78bbb61. 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/fd0b9e6f-a8da-433b-91f7-82710e8c7e9a.json and https://artists.proofprofile.net/proofs/artist/fd0b9e6f-a8da-433b-91f7-82710e8c7e9a.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 0x5855820fc0f914b299e4345aeaacfa6c572f475b10ce06bedc405f9223150713. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/SE6HN2062074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117be07b9ceff017eb092a903cbaf383d9fc52da06b764c95d138b17bc14b052. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6HN2061987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e65049f923366e4c60f3ff09e54f27c52b4548561a049c3a02ab630357123fe. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/SE6HN2062106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287b9218f133b4134de8e0249fd6c83b2ac9c65e668f0cb60226c2956bb165f. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/SE6I32048624.
Aleluya gloria a Dios en las altura (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf414ebee0c7e0b616b95c8e9dfdf8df1ff39e0cb595d72c47a1dbdfb5ca65f7b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6HN2296513.
Mi buen Jesús gratitud siento en mi alma (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f985439c20c809ad88a0d0286866f27055e807d08bfd7009badb0e916be9bc. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/SE6XX2291072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10d3710663afc7cf52917febe0c346b9d4ce613b4f53004d45bda360df9b158. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/SE6HN2374231.
A la luz de las estrellas mi Jesús se arrodillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71540d248b0802845bda1bddca4411e0e5583b98eae145a904b924311388c861. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6SA2385835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9331789b2a7b2d02c695ff3fbb1107bbff58d2c3ad63ac09563ec38e2d49894. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SE6XW2372882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce138ee9b2ebb31fc458253660ec77f9998474885cf2b49e460a3ecda84babb6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE6TI2306064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf9cafcea6bea3f76ec301ef27fef03bd4cceb2e133cfd2c69fd31ee35c384a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6TI2309405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1fe82f664a10d0848c24f1a1c8f9c27a1216a35df90fdffc4d5aa7bb5fa11b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SE6TI2386918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d4961f0ad583fd301278cddccb19d54752d0cbedb12aa8093e10978f649e1e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SE6TI2343844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f7c2cceb006f196d62b97e0a5918ef5b0d2e4a414571f0a9b9ca3c0f8bb672. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/SE6XY2317379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3041487da041a3d6db66274e0166fb0ada0abb36f48119ce8e0f0ac651017e1. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/SE66N2377797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04baaaa71889e7c35fbaab2e4021c9781c39e4accc815bab8a279258f4b3a203. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/SE5752459683.