REDIRECT Active reviews for intermediate designs
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 0x6f1dc30b62b144784535a6a615d76f1dfc40c567f7af845465ccfdfb0ef3d2ce. 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/70cb2903-6cfc-4e81-8948-740f0d5c395d.json and https://artists.proofprofile.net/proofs/artist/70cb2903-6cfc-4e81-8948-740f0d5c395d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Too Late Tonight - Remix By Chris Lord-Alge
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 0xb365f7cd02824ff2126633cf912e15d4c079fdcad46779ef039cf03ef15fa7bc. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BEH019900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d9ecb406783bc4a12e142e9f90ecb78d1cbb70675f5021f94f3a011e5a01e5. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/BEH019900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1824de5e5676978f066e3ae42b6182ee9f9759b0b2887f111b2a9cf465c27dff. 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/BEH019900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d9ecb406783bc4a12e142e9f90ecb78d1cbb70675f5021f94f3a011e5a01e5. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/BEH019900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573c68f4735899b7c9e494bdd5965c9c5137ecf7ce7e973774aab9463032c588. 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/BEH019900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb5ec724c8eb52a287c2048a50d0ea9c3076f92a2860a91bb1eeb9101e37465. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/BEH019900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a9dcf53a8396150d6fa78d1d941060982e31fd29f0703ee9ea5b5b615431a7. 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/BEH019900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080957802bfee8625caf7161ca6521e4db7069a16ece44c7f9b1dd70cccf5fed. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BEU010265001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91f3dbd6c315c58a22c2a561133b18fc7e8038c2db2fa071652aa58dcf6df05. 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/BEU010265003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d04c150188b176a74a77a36b52cbcbb936aa37cd5fa75963a5b52164a2a2c. 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/BEU010265004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1528692eb74409d34e5f82133f85b353f2fa0c141c2101ef26d9e8fa2c3b864. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BEU010265005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a16df1e353a44dbd4ded18adbb7c76868becf3d9f61e097507801a50db52b54. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BEU010265006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945cf65abf5f98a9ac79a1bbc8fb6792eaf57da66f036a8b702c019cdabdbf2a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BEX360700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2662d195a1487515f84a4c58f2c7650feec7a85ebef2d1d790a476d41d7aa5ba. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BEX360800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2182b361755e0606db1ea9857eabcd7c0259a88a508e601295baa19e42922e7c. 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/BEX360800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf636637af4efed46c1c8fc8d6867378ee643552fd6d5c08571b17cbe6abbd98. 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/BEX360800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190907298bf6e59bd64f34c01fa797e1a8757b0f1cade098849d439fd07e5b93. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BEE301000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd932cc4476f8dff7fbf98fe9126f17c83c3a495f5f52e6e1d93e0ee6bc062275. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BEW361100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb365f7cd02824ff2126633cf912e15d4c079fdcad46779ef039cf03ef15fa7bc. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BEH019900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d1872d8f2323587aeeec171169d83cee63abf629df69a8c88bc0716a5fad3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BEH019900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842ffbb8147ff03bd4aabcfbeaed87c2e70ac25881f812afb8a6f77902fd5222. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BEE301000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ce587f100e1a8ba575ce1c78aeaa98b913de6b0b4444cb56065f045accf2eb. 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/AU3S11400034.
At the Close of Every Day - 2 Meter Session
Jan Douwe Kroeske presents: 2 Meter Sessions, Vol. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15d8595eaf0871117caa93b7d884fff35bd35da574d2f56c2604942ff6e4774. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NL07C1700457.