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 0x02737112716cec52100c6c11edc87915b3356cec1e7ddb31bb792616603d95ab. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a29b1f5b-fa08-4213-8635-8c97f676e3cb.json and https://artists.proofprofile.net/proofs/artist/a29b1f5b-fa08-4213-8635-8c97f676e3cb.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 0xae4eaf09d0142fc18a443da7972f5c637cd18de24546dc582d27d831fa16cec1. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBKPL2150239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ccb1d08ef58243c9eb92212ec83d26c0eb342720d6cc0c620cfab02b107541. 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/GBKPL2146893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66454dd8bac1b457c56fb83f36ca98dd1d63757bb08de8c954794bd2ac2e59fe. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/GBKPL2150240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7939683a7262c557282ffdd61fb23a7e8dbf13fd84b1acd6acb0705057491c. 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/GBCFB2294318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9968f13d3cbe074bfe372230015a5e70cd541c609456707279b616a0f166387c. 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/ITM3U2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b90fd823f3a06f75c107ff20017c2191a86e52f22360bf5552382fd412948c2. 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/ITM3U2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee9a7657fe4075a28100065c6cddaba702502715a0631498afbd2178d983e14. 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/ITM3U2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b0570abf51325935651335bec654eb60fcb4bf39bdea6f51ade878b9c907ce. 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/ITM3U2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea419218a45a339daa2612370c09ead2082229f3d44fbf4643a58f1ee5bff43. 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/ITM3U2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9b7d77e3f9d9eebb288d47ba5060f8de4431c57b3b96170c0fe9dd44237994. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITM3U2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb5cb3ea1cec0fae22d2508b7a56e89df731776d507225c78bf3d2005cbbcfe. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITM3U2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4941651ff8b99fda139c590e7ce3cd4a150c040fee09d1c739931f323ad445b3. 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/ITM3U2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c410f5ce0a179b11376ecb800dcc8b4ee038d95ed85629fe23c35f34843471. 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/ITM3U2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ba201cb7770a34e1626ab134d608103b1b1a7f2b1188e26511cd744cb7d6d4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAIG2487302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb5cb3ea1cec0fae22d2508b7a56e89df731776d507225c78bf3d2005cbbcfe. 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/ITM3U2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4941651ff8b99fda139c590e7ce3cd4a150c040fee09d1c739931f323ad445b3. 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/ITM3U2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d75a2a896f2480716be7e8716d76bb173fd89d3a54adeb16a4f63bfc5664be. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZHN92229606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d8eb2755a8c20a443748cb840f9daea06c994b7c7eeb80aaf14a41a0d5cca6. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZHN92229607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7544241d4dd383c26567603f342fd4116f8a7fcea77d43b1a349c2b8eb363e. 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/QZHN92229608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1bdfabf23ec02403927481c32d14db92ef61c307c41b39ba6c22db131b9f25. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZHN92229609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002f4fad3ad4d7aba8f564318afe48d483d1162080335acddfc000945d07cd89. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN92229610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74600cc5b58d0994e63a37679ac35f47c60cb4c4d18c96d7425aa80fe75ab9d. 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/QZHN92229611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d5e4945bef7c45fc9ea52ab7155dd7d0fcd4ec70b23aaa4b95eea3e8b080fb. 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/QZHN92229613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71607f54b82340ce05380ca60174ef2c0772d2bb822c07f68e386fdca058a568. 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/QZHN92229614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241daefe90b2ce5911ed77e26d2b89454022a1df331bdeee770c27576a018691. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZHN92229615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2445f97b5cdbc7a7f1f43e646c5251475d578c8e51eba25ca4b3153018757ceb. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZHN92229616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d574077b60d0445f7c69d74b0d83d347d7a42526d1d488e9e6427f844d0e303. 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/QZHN92229617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97a06fa217a81c218e184d424ba31bf9dbfd35c422f6eb315216651187ba750. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZHN92229618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8b21aa00a23e3fee90c0b911f749e23cd797946215855e30f0323776ca896b. 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/SEYOK1618628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dc432fde6752e82b0d414345a33655df66d86fad1115107c43c14ba2880bb2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SEYOK1618631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be863ad1a5fac40a01c50289e78fa5dbe13536fb663fa336e973ed622651c25. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ITKT22000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee4d51f46fcc3da70e7faed3edef12415febffb203a787a8dbdc2c6a484093e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITKT22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d773feed9d4d2b18a68653fcf45256be6ea515564a38cfcb95b0214f29d09fb. 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/ITKT22000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dab193de29b1dc3860d8fcb7ef71f05a0a03d7917b794c80d7c3cafdcf9f6ee. 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/QZDA62219372.
Tiziano Ferro + 50 Cent (Lorenzo BITW Remix)
Nothing But. Techno (Raw/Deep/Hypnotic), Vol. 08