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 0x8f51f064bcb3b12dfd007750ad9d76343c32cca46efa0e5b53f1c3bba7ded2aa. 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/95a3c48b-40a9-4e48-9369-734c5f65d562.json and https://artists.proofprofile.net/proofs/artist/95a3c48b-40a9-4e48-9369-734c5f65d562.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 0xd5581829a6d60c63eb60b614061ab568a3eb2c21c2492ec1fd4a2da1085babe7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCACS1629285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e76ab4818ff33345fa4d07aee4b7b934f1647d9a3ff1a48e1a782ebc2b6b808. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/TCACR1666813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5581829a6d60c63eb60b614061ab568a3eb2c21c2492ec1fd4a2da1085babe7. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCACS1629285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e76ab4818ff33345fa4d07aee4b7b934f1647d9a3ff1a48e1a782ebc2b6b808. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCACR1666813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fe84495e2f4633667a23b11b8ac0d05be19230fca54d08752156e69f44799b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCACS1660852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7483bf61d46d3c5a5792ff50e6f17e14d0db4908db324d2f6692e35e6f881f94. 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/TCACS1660854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee91348768c9c223c1a7081a8a115cd60662d81832f9ed04d0710bc32a55795. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/TCACS1660845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d89e01bcee3e3bee418b192176b54d0a9fca5c6cd7501a65b25baaa86907db. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAEF1935573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d1d991cff8f1f3c9847d5010069a6c7032190c2284e04e43cc1cb21ac89d81. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFC2074770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7de3df124a6ec41b0d71d8ffe274a424642191c3fcee09116ea725fde7270b0. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/TCAFC2074784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bb78a046d10c832072814962c03ae1b01252cb797e4d97b3a42299fe862bc9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TCAFC2074929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7440f78c2c0affe65e65e6c81ca5af6e66cd94a30817f7ff1c8ed49a8695d500. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFC2075007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0c27205a63a65d710a2ae0b06f9d30a36171f68fb14d937b4ecff6bd7d8c55. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFC2075149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d1d991cff8f1f3c9847d5010069a6c7032190c2284e04e43cc1cb21ac89d81. 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/TCAFC2074770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bb78a046d10c832072814962c03ae1b01252cb797e4d97b3a42299fe862bc9. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TCAFC2074929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7440f78c2c0affe65e65e6c81ca5af6e66cd94a30817f7ff1c8ed49a8695d500. 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/TCAFC2075007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0c27205a63a65d710a2ae0b06f9d30a36171f68fb14d937b4ecff6bd7d8c55. 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/TCAFC2075149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa9be24d618383ef163d70be2f93ce56e96c2fdfde98071a8d51f4ef7009659. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCADP1886666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf527c1e2dcb9b9bdd3644645f8262a2279b246bdaa14f4b8424e49a802519789. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEU2092466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8497de4f8f099c8c64c4cc60a69826323260ba9c9d33c567e2494f9a55fd5c0. 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/USHM22229383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc867c6e12f4d3ae823ff1fd7b4fc71c4b604fce027e2ade68d6c9924df0bc210. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARIXB2401978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764dedd6cddd9c14a8247be120b57febe18fe5b8194e25f9633e5f6c50689045. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ARIXB2402522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7949aacf3769203e0ba4b7f4479dbf611db734bdd47a57e5b13d5a8ac20a9454. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARIXB2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb1db2145f0a6e73b770eb1d9a2adcd1521372d5328a343bdfb5410593977c4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ARIXB2500278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb1db2145f0a6e73b770eb1d9a2adcd1521372d5328a343bdfb5410593977c4. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ARIXB2500278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86de6e1edc668ba66a192b4fcaa15eaad16050551921ebbf5a7fe31541daae4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ARIXB2501136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cfb024eb9a204de6c177b6f64b0fe9b365f23e9780c32afc171683a040fe69. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ARIXB2501137.
Rap Chileno el Sur Es Hardcore Godlevel Enfermos del Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e6339e5f9aba52922d4ee07f792a4137eed2544e12257406ee1df3ad553381. 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/TCACH1535407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22da676b3d080ced1ecd64785a7124c76f130fab9ce6e19db3bfe5bc1658cf16. 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/QZ5AB1977025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cff3c716dfa648661905402cc3920ce40175abb34bd111138e4fbe8fb85e75. 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/TCACH1579729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af303a719d79e0ec0f9436926f0e5e8933f356fd411425558a91cd159c58e77. 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/US7VG2431570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaea24b949eee0bf30b2a4664fc56a0fe4b72b60517ca54cb531b94d3090296. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARIXB2200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5113597dcca9aa172d50f51c94c2527000fd0e48db5b86f5cbe701e5ac89244e. 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/TCACF1540158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12978f2cca09e5797511351030bc86968898b4fab66584bb1e6bf6f61021b24. 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/QZ5AB2014576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37decb395afc860e2930db039918640fb6b05a10fe8804021b7acbe6db02f34. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHZ62045509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d28a77b661f19f1dab41ae676fc382bdaf9961536ab81a7716ff311639691d. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/CLA122500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48cb362e6d1bae5171c63d33d1f350b8e7d3574e9d3be58cbed97a73e04086b. 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/QZ5AB1618211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac7dc83b1c377c14f4a27480b08208932c45f6fbcd2251c191918d11f13d1fa. 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/TCADW1876992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c5f33d1e9cea16ae3b8925be3b4638711e2ff7e76c7bce50aea53e8294955c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9K2385314.