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 0xa482fb77819fca272088f9cfcdcb8655520434f9b1eab8c84b3286ff671fe143. 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/a267265b-6dad-47a4-adea-046b5e776284.json and https://artists.proofprofile.net/proofs/artist/a267265b-6dad-47a4-adea-046b5e776284.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 0x2f2d8dbfe4ed554656899b0e8e9e8a49d8e451c80b8c25ab28005977becdad58. 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/CAJZC2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb55fc402ec8610c53c66e221637650a099dc79060248565ddc023463d66e7a. 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/CAJ621601004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e50a4ec6cebc25d13e090ed3708e857658d1c6ed78cecaa57833330216f60dd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA29Q1500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208884fcd3b12ec703f4f391f9c19f908461ca3057475e08ed692e9543ab2f49. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CAJZC2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c65403b7868d4551995e07e6223cb9b70ec795afa42551058f4a51921809c6. 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/CAJZC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2447897654075d4c155b499a8ee452785782f8003eedd86a40f0643526127f18. 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/CAJZC2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2d8dbfe4ed554656899b0e8e9e8a49d8e451c80b8c25ab28005977becdad58. 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/CAJZC2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dece1abc7dce417234faa4032c4734163aec9f6c5e4828a992654857db95449. 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/CAJZC2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9164763fea052fc640185ad8b15dac52c7c65563d8e59a13f0a59aa6e3ec737. 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/CAJZC2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0fd5caf62ed0c152df7a23fef5b1ef45f7fba2d8d6215a47027fbe923dd72. 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/CAJZC2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130d9bca7b189d439c114e6ab3978aebe79a890a21077765918af87f874b83de. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CAJZC2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc2f033ac57dbf2a6d7c37095fc395b97d025e2004945631b1fca35f1674e3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAJZC2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b321d48e8b9f73c915d70da3ae6746565d6bf113b55f179bce81a1fc39a7a0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CAJZC2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8318cdb816023734f0f731db62037ef35f8df2b008dfc5730165d3ce8539700. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/CAJZC2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621f8bf2e5de33e8a99c647073272628062f2e6e11713a4bab53e0026787daa8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/CAJZC2100014.
Hot Slush Puppie (feat. Claudia Bouvette, AG Kone, Mantisse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0fd5caf62ed0c152df7a23fef5b1ef45f7fba2d8d6215a47027fbe923dd72. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/CAJZC2100005.