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 0x648b2dddafccd6a2ded54d953abf6824edd24f27f74ac055fa18ea2e03f353bb. 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/2e8ce6f8-94a2-49ff-9e98-9216d75b0df4.json and https://artists.proofprofile.net/proofs/artist/2e8ce6f8-94a2-49ff-9e98-9216d75b0df4.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 0x34ea87340df9a81cfc550dc2eecc7a5ce5eceed8915e2ca3b1bf2defb8037325. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IL4431500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2109722dbaa670be8f9eea41c4e7267206753cd2c0ec35341250b09dfd68e2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IL4431700935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb2987b44a696684bd208087885ba010c7b33bf9294ad80ea63ddb4ebb611c4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:28Z), 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/IL4431500541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d296c9a83ee06ecb8f5bea07ed7c0326d3aedee66998fbe54f2460c37925a6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IL4431700837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80f2bc9c7c6af1a342c76c8db87fe421b2644529f6e899e0729daa16de95944. 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/IL4431801307.
מול כל מה שעברנו (Remix by Ariel Tuchman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e6f0aff558cbdb12428c93b8f9e457e8de2b6e93e5e5e9ab852bccccdfc1de. 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/IL4432001542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8046855be3cb84788171bc1526c742fbf6bcc376d1505c220d11e431c0736d9f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:01Z), 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/IL1012100882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8cf712fa1c7d72b468816b7e98f2edae002f50d42f3ea23d4b11a0b490482. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/IL7532212773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1be3840a74e84786547c5354514ceadd97065f8888b41bfbbf09af6b4b10e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IL1012201461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8046855be3cb84788171bc1526c742fbf6bcc376d1505c220d11e431c0736d9f. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/IL1012100882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e6f0aff558cbdb12428c93b8f9e457e8de2b6e93e5e5e9ab852bccccdfc1de. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL4432001542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb78a023fbc78271221b428755df0970b6f3596f4d79466cb0762f73b19d9f2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL1012302112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfe0eec5a0ae2f393fa00e7ca12a2d6c5c553361c7717be21d39da0c8863163. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL1012400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf5e020b052b139edb24708004d0fd11ed0140ac929e38c857679c329fa8d81. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:47:28Z), 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/IL1012400677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1b6288860547a27e13fb09c3487c5f9aa838cc122b498235b100caa552f0a0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:07:00Z), 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/IL1012402310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b03f4e3a4a2e7f7bb12573151a0bb2d349901d87ead9a3d8f95dd179cba74d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:32Z), 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/IL1012402311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1671c7400e16fbe5a8517c64bc20780acf1b1bdb536045e6f3cd563d862cf28. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IL1012402312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa926573cb51a076fddbef1fea6eb80a691ccc6d50ef289b0e41f163bea7d5696. 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/IL1012402314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8427c0000ff98fbc9781b0f3a67e7ea0fd2770637c12647c136e23ac55a3a74c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/IL1012402315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45a2e92010a709875b40ac93cfbfb15ae642e881d035b4b35a9c58636576aa3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:27Z), 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/IL1012402316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bad244059821fe1ee7ff14bc3e2cdec4103cff8c57d54ab30abfadb594b3686. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX452206781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb1a4fc10cf1d11d66bdb0cecff7ee2d6cabb595dcd0ce8342f745d86655057. 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/IL1021910932.