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 0xc274935b063c0342c00eb3693481556ef1c828e713b15a7670b62598bf802179. 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/bacd0578-feb3-44e3-ae67-92a999c87b4e.json and https://artists.proofprofile.net/proofs/artist/bacd0578-feb3-44e3-ae67-92a999c87b4e.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 0x80fa6073341eef5ec8c24b97331e440382862a8cace7fb29a8906b73a26c87de. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USLD91719220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63746935d27787ab4400edb9859aa7f13993e4cbb2e24202a67c49be478a625e. 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/KRB462001174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171209ced42241874cbc26b282f8e37086a83f3a17dcf5bca1089ada73862b34. 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/KRB462001175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b54627e819a397d2f15306fc9f9876eb36453ce682d5ff2e0189bebde10ab1d. 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/KRB462001176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa071ac8b49d11d62c3b82ca1aa1bae73696e106824ca0ab3810e9f96328c57. 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/KRB462001177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20d9fa15eac8d14d59cab5390d4eb6fd58db730d9b1e2814271767a3edc3e51. 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/KRB462001178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddf92de9cead82de99813abc1b16f3e8736f9de61b542ee54f83ac5a9f3d884. 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/KRB462001179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7d6bea918907e664d37f832deb3912433750d65372b98d45d550c3c87c1bee. 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/KRB462001180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47895465ea45103dd8580bfe5eb23a5900968e1361ef528d60087149340f444f. 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/QM7282117785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a67b4a8d955d8f011c491b9750fae464f132e36ef28da9dd36e7a6ce8bfc201. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:53:58Z), 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/QMBZ92189598.
HANG OUT : HIPHOPPLAYA COMPILATION ALBUM 2021 Part 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbff5cb5564c69949d62bc14500fa6b0a3e39c2560bcc0ff3db3b9240ddc6b4b. 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/QMDA62189239.
CATWALK (feat. Rico Nasty) (prod. GOLDBUUDA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89fbea30a0e2e3e6d9a18f9ef59a1b242eeab20d98250114697660d1e39d39c. 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/QM4TX2208294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c801fccaced24777b30b697b73df7463b90ba5cf350c6f1f12a39d6818a865. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM4TX2287911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89fbea30a0e2e3e6d9a18f9ef59a1b242eeab20d98250114697660d1e39d39c. 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/QM4TX2208294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb191f0740c41ae34147478f386af9d49072fcc56b3eacb95c070c95752a1f3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM4TX2287910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40908ef1864d03807608f209a0341406ee7b495f6e230d45e27f4dc471e25584. 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/KRMIM2331859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e13f742610e32178d987279b9676afdf5b24b5e5bb946f74fe6e2f178522930. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRA252301955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f1ef13022d8e662de2f381884216a3a706f4eaab4a847e8569fcc88aa01fa9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USUYG1564399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a83001e7c6c18d3034dc2f3b23f2219963420916478106019ce949ac2526e49. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUYG1564401.
FUEGO O NADA (feat. BLASÉ, LOOPY, GOLDBUUDA, JUSTHIS & Tiger JK)
CRYING IN DA CLUB II (feat. Mlma & DeVita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dedf887c7ef7628601bf0cea84e48f52ff46b44958e2ced8e865bad53aec56a. 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/QMDA62101162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c2fd7fc5051569d4a6270c00d6eb26b44e48a1317d8e64354287bc55d407de. 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/KRB142300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c789ed332048a1a93cea2b106798846f7c65379e81597f8b1cc8cf407b40db5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFMF2367984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28356e4444c48da4386d8e327e73aacc353255b337c12a9a9aa8c28e502c4434. 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/QM4TW2365459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b72b7a3addc7490837f2894fef8bb6c0ff6d68a25b121cde1798fcc7615ff. 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/KSA012251358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75874ac2aed657dff8ee46b1e8457d6c760461ebf588fb3f1f7f8f90ea9949e9. 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/ZZA0P2309916.