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 0x7a31823b0209af9624f333b458c1afe54b41f724ed9a854eae43b576e25c8914. 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/789646d1-a5c0-412d-b9a8-ddf8e82094f9.json and https://artists.proofprofile.net/proofs/artist/789646d1-a5c0-412d-b9a8-ddf8e82094f9.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 0x4b9b1f1a03c642ac84d3d8a349618ff3e8c3aed74017cc5c19d85788a679380b. 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/DEG932402932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd374ae69e74ad467a72fda754584201645a6bdccaca3373218b2406e31603b99. 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/USZXT2352519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481d5ac0d6260e5d778f987d58433e51f33ccc8eb2e5ba0deadf43abeb0aa7bc. 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/USZXT2353143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6636eeb228db3b144cd435aeb8eb0a172fc50914f40a85512999daba7327b1. 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/USZXT2353144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114b5a91c4bd9e526ef919b7112705e7bdcb871121c48c21e957c5a7ef0f87ae. 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/USZXT2353145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9045a327485facfd6d195154d6af0a4f8095308afa1f097febc9840b6bae7490. 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/USZXT2353146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734abd3f8f4956c5473b6a53bf89b105fdcb2a15f028db638ca0521405d4888f. 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/USZXT2353147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c177608ba34a5042bc46db1ededa74e0f149aa93d630fb283004f0f1cd13f2. 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/USZXT2353149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adb4d679de0157dfcf9d731144ce5b922666d1f3becced5ee4ffefebcf7595b. 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/USZXT2353150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec1574740b0abdde65398e822db95b6be1cdf9f3204567acbd96af5e38623e9. 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/USZXT2353151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d9ed2d3f056c9766556027da56c6b58cfa4358ae4f4b967272f58fcf946e49. 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/USZXT2453419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c38b6bb8b97a65fb5e81fa8208005ee658e400a93171c0242abee3ec6104b8e. 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/USZXT2353152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95340c14ae1cde73b2efb48f5d55d4bf7353cfc19967f4971c5d1b1d2e6c206. 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/USZXT2453420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f157dd8ecea4a5a764946a18d456a9963a930a639015c700981c70606878e5a. 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/USZXT2453421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ab1b5a104cff6bc9dcdbd02647afe48520ea4de0c97b453fee6e12ea213b9. 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/USZXT2453422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345c156a3a797a9b2aa1dac9295cfe9d3875d677164c45667c9ab1351861c34. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZXT2353153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6636eeb228db3b144cd435aeb8eb0a172fc50914f40a85512999daba7327b1. 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/USZXT2353144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6636eeb228db3b144cd435aeb8eb0a172fc50914f40a85512999daba7327b1. 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/USZXT2353144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd374ae69e74ad467a72fda754584201645a6bdccaca3373218b2406e31603b99. 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/USZXT2352519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc2cb7511167c43b7d8525b545a5cc7ca4bf6f639673b34631b1fc375f3a3bf. 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/USZXT2454683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df21ad181cbfe6fdbead3feb3da7060d797f58c15ff7bd888b52cfc250b3744. 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/USZXT2453659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe01b3d5d579bbf04db9cc1a9baab65b443c99aa5ebd11f3a6d2e60b4e441d9. 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/USUG12309805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f495b823b36f47217f337fce10600c5c67a2388e289b8665777af219ab0359. 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/GBSXS1800215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f6eb93e5fbd978a5b24b2d37b119ac61f4ad119e09d826b7482900b8947f6a. 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/USUG12310037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fb94f830ae42b07c87295e45203e996d4fde97071548c0eca2d2feaa462649. 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/FRZ020182380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65e7be5119052c2ae7a1144b2baffd2ebba6ab17b2e0b50169e1b92c452851e. 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/USUM72116130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef38cbed32fef2843285c70e78908a4691c7ec73a05def2fcbe0c8ce48814c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEUM72302142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac243687442da453385cac9385a689f742bfc86eba6fd38f88914fdc74b16dc. 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/USUG12301338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0fc9414737e505a7921715fcc8f764bb092e149a0de9e3edc9773fc971ba96. 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/USZXT2454146.
Like a Prayer (feat. Scarlett Quinn) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cdac04346a4ec3de88037e77dce9eb94396e4421c5d3295342e952d6a1b5ef. 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/USNRS1535069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9462a296f94e5fd0369f72477e33f75786b2385e41581251542655db3aa798a. 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/USNRS1535079.