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 0x345c99c1dba51169e63a888b0dc1d3186e590dd77958015b27fdd5a59ebb2642. 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/b68df84e-c652-4710-a0be-0cd78db9143b.json and https://artists.proofprofile.net/proofs/artist/b68df84e-c652-4710-a0be-0cd78db9143b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chill Brazilian Storm: Bossa Nova Beats 2
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 0xa251428db9ee8f73c7ad57decf25a7ab0484104e2e18decbdb09ad70a5edb9e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCURM2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa553d69eb17ee737dda2a962c6f7aec4dac45b272d3e4f767855436fd4c7f61f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKTNP2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ff6b805f2613042a57a60cb498b6df85549a8a0d5040e1a52b36ce4b3fd214. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKTNP2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b430bd1664c681f452de452be8b2e645e0633619b54a8d1bbfb323660b02bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKTNP2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e1746bab1a8fb95f8efd919cf87a05113cb509a6b95937831125b236f292eb. 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/BX1292300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5302f695ec9115144c8236666e588fdeed1c4f8790ff71a3cc9f616910c1f30b. 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/BKTNP2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ee416ab0375a409f8a63f496571aca9ff0a1eae178ad3e7b97554a35ed18fb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX1292300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8095c8b52ae5f551c61ea8e781d0cdfb7c3091509acb5a6e732b2c2599f74afe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BC5BL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a83fecd836ddf4624491222a4298b0bc034e12849962c31a216fd63c3e587c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKTNP2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7317e716cf7a5578ba62ac870ec6274fd7c99f200fa2fade452c87a72d180ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX1292300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1adf98d97c42c567841b94fdc55ad21830a3ad6f65bb81993e441bee3d5224d. 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/BKTNP2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89b5d3f49721478d905ba3d838b5dd332f1cea880c4af3d96a6ca47854dc75b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKTNP2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fa99ea3f57acdab48ace507e4c5286e2edc14eb61a67c40f284b3dd959cd63. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKTNP2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b12bf81ab80abbe7ffb49685bb638830beb77a35c6968ce50e605727937e2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKTNP2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddcd6c550c865ed633e66ecef440c063d4863c33ed83e5d8566d35b23f5a03a. 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/BKTNP2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb01c5b81d79178055e04aad23b0fd9e5fb5f11cd33c45f78415cbe4f804c6a3. 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/BKTNP2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5cfe698c3bc2e10e5f5292879cd095b94f29db2fac874c97835d95ccb5ff8e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKTNP2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6437f54bff04f97242984ec030971a10aef0631df825ad3f08621fd451eb8496. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC1HI2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0987905158a0808c545dd34a31da01231050ae5a813a9dd665f8d87d8abf086. 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/BXXAZ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4047afb13583fb9b942585a6b5a12bc3dd0f59c56661ddbabf10ff2aebb6c6fe. 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/BKLFO2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1adf98d97c42c567841b94fdc55ad21830a3ad6f65bb81993e441bee3d5224d. 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/BKTNP2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf621bd8a5baba32cd3b51e6e14abc918e1884ec09ad50c96e9c3bb18655d620. 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/BXOP52300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4666df2e2aab201582ebade8a9b34d1cfff9a86bdb54a3fa5f04a41720a510b. 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/BXOP52200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217073b6d39edd9b1334a2bd66150ded4d4363c4d22053aee651da03cc95a502. 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/BXOP52200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e7e2d2af501ceb41ebfdf29822a6958571e8ff3068f177d0f5db81048e4440. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXOP52100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3b4575b44e44ad1d2556d591322fdc7a0832ba4fd641b03b40ff59682458dd. 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/BXXAZ2400013.