Tham is a surname. Notable people with the surname include: Carl Tham (born 1939), Swedish politician Hilary Tham (1946–2005), Malaysian-born American poet Jason Tham, Indian dancer, choreographer an
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 0xa852c08bc8964291d4739c62d67cec546bdb03c6f69dfbb629b62e4aaaecb419. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/747043ce-38ab-460c-83e2-c6181c2de982.json and https://artists.proofprofile.net/proofs/artist/747043ce-38ab-460c-83e2-c6181c2de982.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 0xb017a4b1c3708114c21f39141246b2cace5f7702e1a470cba1447f46ab576680. 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/DEPI82009157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828d84e6f43638f49dcbe15c92cf6476ca7373edadc92c699816676f6faeaa6d. 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/DEPI82022540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6fa24af150f73d873e431ff17991989b18a10ae8e63c8a797d69d37d9d5946. 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/DEPI82101338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590bec71166293bdf44b07e7270532e5eb9f9d142be77443d66074564dd0c39c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/NLCK41092893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8b39cb81be3963358226d997de47fd4d1f800674621c83f684b7985f4e003. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZMHM2341210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deb514b1657f4877d50fd74ca282dabe62e3eb68f5fa6c13914787f9d9435a0. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/NLCK42340952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81625d08c7d15ba3b11eee2b0e88afdb6ab07749332614b476c834ce05844bd8. 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/FRX872441865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81625d08c7d15ba3b11eee2b0e88afdb6ab07749332614b476c834ce05844bd8. 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/FRX872441865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf322ea55a00bcb2c697c0722d34083834e9ec74e6f68532679d01d29e7e97ca0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEH742426924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc9f15dd98b7d0ffe8d7f432de178db140097f9f63b4e1db0376ff8a48163a8. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/CBEYJ2426500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a66875dde0c6dba9a741fbb681cfb4abfe210769285c9cd516625518a737907. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/CBEYJ2426498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e7f0bfee30423781f2f58a15fd78257c0c0f16f0b0283106b68fef473a128f. 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/CBEYJ2426501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd30c7aa20deffdb4532d097d85a2a2f14f0b751395d65422ebeb98e5ee55146. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FRR642500549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0180cc71ca8d96b44921369666784b347e02a0d48f0da330d05218f74ad3be. 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/FRR642500550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e7be4f47856e86987876e351c5c9cdf8274a98c01d4b92c89f5675d0e6a4aa. 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/NLCK42507064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8615fb23e71f84716eb94dc15705dacde3c2449fed5a63b871a00f540c049d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BE4JP2500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b5598a22b6b07a9781ffdd0a86df78890e452179b2d11deec2a739d2153dca. 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/NLCK41058561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883c82eaa81da9795be87c92f4ba4b0da17ed76c90553da5c9c54bc693090ce0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLCK42340741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc480bc0339df8ec7ad22f5955e61e034fb1a20ccd22317610aa3906df1e0d903. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZWFK2338416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270fe5e232789f336294bc84eaa096c9db4bef7b57b34180cabdc8bcae26ca0a. 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/NLCK41079658.
Various Artists 002 Fundraiser Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b06f0dbdfcb2b263ec08dfbf6ee516327a1bcd38b4161658252679bd8060e89. 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/NLCK41067073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778874808568d2b7ff59eb14bac4135b5e9224a50e5b495e1fec1d5b3434e4cd. 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/NLCK42216028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0806ba36137e62fe296b18aef21eba65d0f871a9085f11e15a38f3df6f659559. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DGA0S2484521.
Ellen Allien Presents We Are Not Alone, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe495efa10f651726bb7c2e8bc5e1b9fe05f17c4d5bb75c7079a905ab319fcc. 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/DEAE62000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7532e3cf314d6014a5a55c3644b9122081013d903c6ee4863cd46531a81403e2. 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/NLCK42220349.