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 0x533f48d59b8e2c95f9f4eacbd2e3155bfe01b6884fdf8be5f2a40639039d844a. 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/0453ca0a-d5f6-4279-97d1-e4fe53084765.json and https://artists.proofprofile.net/proofs/artist/0453ca0a-d5f6-4279-97d1-e4fe53084765.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 0xf600a1df062a5baa502ac7ee76ba8a9f505ccc118d6c044af95975833b5e741c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CA5KR2277295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dbe5cf0cb69ece892eff73df6436d5a73415fb58859c7823ac0465b2d7fa29. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CA5KR2277296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011d75f4a904a1d1f817d884c3d92c554498c838280682861ec3a8a73990351d. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CA5KR2277297.
Who Stole Lakhusta Groove - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecec95918eb6201c31a489b5edcccb981e505f1c76b318faafddbee973f0f95. 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/CA5KR2277298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43c51e1b1a31a4d0c05699b3f8bc536e8eca367d74ea41636400a5b40991975. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CA5KR2277299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d240c71743b2470624d8683ccba962c45a6ddc9a122714ff32374fcbc1c3bb. 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/CA5KR2277300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aede5c0c395972933aa0e9ed27d7901116541cb36f0429a12986bd6fff3330. 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/CA5KR2277301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27341412afece61a7c76abc1af3ebf78a461e6669a667b6d74c4e3ca756d20e. 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/CA5KR2277302.
Come To The West (Chymamusique Edit) - Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34655f155efeb9794fc05189de7d8ef8d95930a62b6fe407df2a5be4fe25460. 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/CA5KR2277303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ad88ed711e3c5f28fc733bdb111e291e6c099369cf5b91bd0693f85d25348f. 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/CA5KR2277304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb813472fb1d96f5af044c35e7d8798bd8abf4e58127005c707b958a3a77e2588. 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/CA5KR2277306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248785410c970d93e614bcaa9fe4d62d52c1cb83c1e47de9258d2558c0a19adf. 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/CA5KR2277307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285ff9b0386e5d748302fc37871b6ef047d14038d4a63a5c70f788934f769e2d. 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/CA5KR2349027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f745e51955e17f037f0aab549b2a4a36071193ef29fc1c728c55b58e9efec80. 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/CA5KR2442083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3c16ee67d0d729095ca7bbf39bf94ae05a10997b24d1a944900abf5f9db11c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA5KR2470217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4a1d0a1f9bf9bc850300226d6c6bd5a29b14471e9b10dd763bcfbbede25221. 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/CA5KR2513158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffab71543053a4ea2b540f12369f46171374638a4ce27910f572355c4d06b5f8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CA5KR2514210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16dd3b5c622c69094cbb1f6b7715527634bf851f38e902c9fb3038b4a83e708. 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/CA5KR2514211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b98a5fa398af1f5be65191f259b5dd82cb5f08a9e6ab748143332ba201015. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/CA5KR2526914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbd3456baec287d7b1742d8eb20b70721a389881a642465191a714d4f9b2221. 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/CA5KR2215032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd898d6a4a98f651458ba0d19ede9018a984398d1360d81ab2fc58cfe918f8033. 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/CA5KR2438338.