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 0xf2f6e5fd9585f7be2fd95851f315cac49ab08f75730f8b5a22f91648b106ddd1. 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/24d3b218-162a-419c-bb6f-74ef6b10f111.json and https://artists.proofprofile.net/proofs/artist/24d3b218-162a-419c-bb6f-74ef6b10f111.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 0x02653bbfb8efc6fab78fd43ea588fc45eda29a4a3f415b9d9a7e464bfa40b959. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCABU1424635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a33e87eb6f501fd2cb67789a05e2d411834b5148d802d894c3b4def5fe0ca0. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TCABU1424645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9578fc21dc5ad3d95b145dee39b2ed3cc201fedff1254c3db4b2d155ea2534. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCABU1424649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ae17c0b394a76aa6f3bb447a829b3b56486ef76af23b0b1b2aa1d366471e06. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABU1424687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f989dd247b7e04aaa4cf558260732465892de56df0a74ed65ec6f4abf460672. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABU1424690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c145c27468eec1d49efe71507753f112e2b8fcc6e49622652ea0a519491bd45. 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/TCABU1424691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52bf3a14d4ed2e7249d8eed5bd16efd65ef578484f0b4f0a3336aca83d317e9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABU1424693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f87bad4915e4cb97ce0030896eedb6b69ff21d1831bc0f1ddd77df409f8c09. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABU1424698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9c75fd0b7a06016fdaf7e2e18404db70589b07ee36d85ccb20cb52f686d687. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:10:56Z), 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/TCABU1424697.
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 0xff46af4583dfc599ac331df52eb1e74e150e98c732d4b2b8c4b07c1aa8f744ec. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCABU1424685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b2583ae5a7ec948ec4767b7315c170ad0efe3782f659e9d6ff02cb6785bcdf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCABU1424686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b11150493ef63672bdb2d5184c05fb3afdd860b4e0f178d7e9ea10d1e5ab1. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/TCABU1424688.
This Liquor (feat. Belo Zero & Crucial Conflict)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a78353313416232fd84c4dd1d6eed5928d657f7b352426a4f4ee7431ca1a91c. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/TCABU1424689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197469c7a06ff2cffb2302d57d6a60ffaba077f0f7790ea4724dcc12f28b6783. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCABU1424692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45073af3669780541d655e7c011492bde876a66b26ad29f7e8f851798c30e76. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCABU1424695.
Breakfast in Bed (Interlude) [feat. Niyana]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50edffd9f01bd7da058eb119d57408f79dad85ce1e58694f70cfca7dd964ba80. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCABU1424696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc4e52f9de418d639d757528d5eadd552d641c564cd107104cbc63bc722efa0. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/TCABU1424699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8496e0bdf1203836c796df8e02c266690234a1a065f63b16a6db952f25dca36. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCACA1436604.
Awards (Freak Remix) [feat. Safaree Samuels]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3832c67276ebc5546ec7a0b1fea4fad31fef7f9f3a9ea4c86c2797cd0cbadb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACR1668363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316d3508c4db50a90c79fc810c9f7595eccd17185282c44b4872bb8df43e6695. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAEM1995990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323a5df8103f69326bea0814f70324cbea494cb3f94cb927b24b679eec575508. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USUYG1147537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37815aed045dbbda6f09afbb616cc088fe12573ec237aff910219a57d5df43b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USUYG1147608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434b230839951a179c081e56d8596219f0c6a4307639a5f61de37456836bd0eb. 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/USUM72201784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129ce2bcc311daef14f92a8b60a10d1054f79aa5bd7b6f6deb4dbaa0c3f49d4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMEPR1375009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf013efc6d04f7b985116621a3a973f9591e4128af79d76f18f1baf9c0836ee3a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMTRG1600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390edcb54c9f237c5f03571bb406b51a5f56cc2739a16043d2fb5901d3cb2ba1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMTRG1200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390edcb54c9f237c5f03571bb406b51a5f56cc2739a16043d2fb5901d3cb2ba1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMTRG1200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e231d606f72037f2cfadacc8223e50b3be6aad09e67ca4144ff926e45d83cd. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZ7XS2300012.
Classic Celtic Music from Smithsonian Folkways
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23f1c8174363e061f84b7c1b97ab9c85107538ad9487e4dedc9da8dcbe80ec2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USCHR1338774.