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 0x78fade5a388af0e3a1d6008ab16ebad6696cdef80c209fe598ad18924051182c. 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/f8b64f4e-df92-477b-802d-46ff183b5f1e.json and https://artists.proofprofile.net/proofs/artist/f8b64f4e-df92-477b-802d-46ff183b5f1e.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 0x6ac24c854fceefbbe37174bbec8af19b90d3b915260317eaa94f2f05d272a8da. 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/INSB92300665.
16 Baras Kuri (feat. Uditya Narayan Mahakud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eb57bd99800fe3885b67eceb81feee7ca7d080cd3995851a7350fa7d0cb9ed. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/INSB92300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598e46d0182258e8821607d121316bac107fd264fa783df294317ef2084b9453. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/INN632200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96bee968d63cc1e2b1b216c4f8f30b9a06b86d07893cbc7142c7d4c422c59fe. 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/INN632200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302dd7aebdacf0b0cde467250ad86edf96601185e5ecedf0d398b02d77032cce. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/INSB92300685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5f0c065aa0f38b5665f55a6549894e4782127b1f31b9bd9ac04aa68680f41b. 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/QZYFZ2332416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c364c3b9aa04bb8f7c458c943add26d061e719aacb8f9a6131ef5143fb245d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/INSB92300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff734237d69b769988be176d3bc86b591bfc925f8af77c68a0fe1f4d5760944a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/IND832303700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7ac2828a8f3594f58e4bfec7070d9cccc9c51ce8156f250d780f3c39568c89. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/QZTPX2325477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e220fe85f9f9ace0d263b7a97cd16a38380fe20a88498bfa48f638f7440fec2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/INSB92300784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc111fb8717b12b14e4c1d4e15bd93411935441e758600ed9ecdd36d93dcdf5. 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/INSB92300940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97234036ea2344f289d8e1d989c918713ab3f91357dbfbeb3fb160df18ee9d73. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INSB92400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630d7b309847cd356f5a24f5f29d2272bd769d7d58a406231bde50fa9902c4e1. 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/INN632400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1442672ebcf612c091fca430956c0473f76f8f61df25994b49c8927b7e61bcfb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/INSH32400826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375f2dd0ad4a186941f8dc210c96ba1ea4641dc23f48c604e09e443849cd8a7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/IND832401985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04eabc685ce165d1f5609556687e2956f7295b01add6b65e6aac6eec0e5dd3f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/INN632500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e63e0bb5bf1ac65aa0a19a531837524d47986d6e3619a3a836fb2445d96327. 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/INV792512041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b2e754e4417bd0c31b4ef2e55eaed94d37cea2ce7a6feab476323b40ad35cd. 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/INSB92500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b358c5f67881565c834d770b1f018585c279c2574bf992e4158862590e7f3e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/INSB92500482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7756f155f52c925888b5471bc8786f903aeb41886c30a9b7963e3a1ccb92b0. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/INSB92500646.