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 0x4fe750d9a8c864403789c2691ff8e898fa85cd30bb306dc18f918fc42f12d0b9. 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/73a7c630-d157-410e-90bf-638bc91662d6.json and https://artists.proofprofile.net/proofs/artist/73a7c630-d157-410e-90bf-638bc91662d6.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 0xae0b482b601842167d114ebf9e38e1b6cd82c2a689ebbeef07d0080d5a782d98. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLV62317534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee03f3aaf45bdc3a329d89a28adc90b5bc1fd402b21d64694e9092b61b63104. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLV62317541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c513aaa935a76353026c21ed37bae3409af15061d4239fed9c8185868b907e. 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/GBKQU2426212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc7145130818ff920376984a6cbb1e7e4a57cc65bdc589cc2ce874a5fdccd42. 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/USNRS2343138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b728d1a7db668733998c6a19302d91091fe126fae105ad387235c829b5ac448. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMHK2369579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb10175105f106056f22b279cf29e0c6519cb1e48e17c8a13f0c751f76a73b81. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ITA061302702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81befe48863a1ad2b4aea367e0d32033dcdc196a43a3cdd21000bccfecc787e9. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ITA061302703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162281df7a6ec812cd2e9be5efac1ad965abd71ce16932da564b0dafa30235a7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZTLA2429913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402ec4b31d7718202b3bb20b3f12427c0a7d4b4812711a85ab6c03b97110bdca. 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/GBKQU2450932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bf164a77bbc244e6d0c7cc627cfada63f6422efa875705efdba27d65309039. 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/GBKQU2424185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12973dc1d1b5f65ecea7170430831c811da42bb22ab517b26a516d28c313e17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2404980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c226b6c7d12c737612878c06f06cb4639b687035539dcf89e4072bd3730039. 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/GBKQU2404981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d86b45a10a7c014b26aa4a4a651f56f5c3a362f3f54f1382d89f155fb0a639b. 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/CA5KR2409801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa82784c6c3922ff958f44a1e4b7ded933196c1d95e114571381d8f397ba9d2. 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/GBK6Y2405271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0345b07477df8f7235f465f0cf0b00dd6f48b6708a304c5e871b0844762ca1. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBK6Y2405272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cb553dc493c4fc96c4d07078363a0bf8ead6c2760ba6b5664cedaf11486c85. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBLV62317535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ffa30892c04ba0be1c6887e5e65b75d6e1ef70dcaff4cb5042e25d478f7429. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2314886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7ca7ace2a87f3f952c7edeaceede265754fe7ff41aeaedd3875e2c7c923dea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2339527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6717e3d4f2c6d7b13b473ce6e1b0dbb0d0d2d1c79c60b3a25cd3c99da4b9b09b. 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/CA5KR2324908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95460b8d8951ffec768ab37254c0fdd9b9af7eb1e08e3d02f7cdc4eec7790bd. 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/ITA061302691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064811302b50333dcc0acd9262f0b3ed53eba2b5aa1daa40ecaf45b2fa702df6. 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/ITA061302693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f3e208579ae2b56787f7899ad6ba18e1538950112f69268877fd357c986d2c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GRLP12302658.
Tech My House Vol. 5 Mini Mix (Mixed By Tony H)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05237bff249976db32ceed164db7e20276cca737ad174e737c173817264ebdc. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CA5KR2324966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c43185b1907de9913772ba19ca39c1eca7e19843a1b8251ce153a7a97104a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/CA5KR2362749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7466671f44c3b2915de734d07daf32a3e0d004cfe96becb0d1dda8615bd8c24. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/US83Z2421241.