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 0xe6f1e2d5bc608e2438f4e126cd21bed8219221df3c76d7cd33f27fd0e91d3879. 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/6610bdff-41ca-41af-bb80-55f1195640a7.json and https://artists.proofprofile.net/proofs/artist/6610bdff-41ca-41af-bb80-55f1195640a7.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 0xa66318b0f7a2aa8d24cfcb38a7ce88140f058886bd4752a3857f5370d962d3a1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEH330600215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a35a14459c860366805550bd68a03332b0a6d5304b4cc01330e412264107f2d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEH330601344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c02ba8a0397f4d9471614f7041c445154656b779c65235c309273a9604d7675. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEZ650518058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aa6804170800399413a67ccfb58f57699f4f63a9f1cecb76e0c7bf85d27fde. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEZ650510199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ea39990f41c4e80f4148cdeb475633858d636274faa61adf94b51ed0283182. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEH330600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c0efa3d76bb35459609cdf416a11ed7b006ba744ca6dcdebe25ed0153c0101. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEH330701914.
Musica Del Sol Vol 1 (Luxury Lounge & Chillout Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1298eddf3c1eb41999d8ac1c87504dce7c3bd925203de7c0ca154ddc34ff0f25. 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/FRX281558568.
Dancing in the Sunrise - Bossa Beach Cut
Maretimo Sessions: Sunset Del Mar - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b51955ba20783218abc86156dfef284c6c13a2dae11d920aac8595b5e48aa. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEH331202498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc3c38631e00f279e04701964e0583c3bf131d6268be7eebe1044f63d3bef4. 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/DEH330802044.
Maretimo Records – Masterpieces, Vol. 1 (The Wonderful World of Lounge Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9289ee832194a8462a866c81bca4e8a53a93ea5d3055f7c3d05696af137031. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DEZ650509985.
Come 2 Mykonos - Def Groove Remastered Cut
Beach Grooves Maretimo, Vol. 4 - House & Chill Sounds to Groove and Relax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb8007f5f0c3ad10810c05c542c8cc5ab25fea1436eee9c2b796e580f4f2abb. 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/DEH332103903.
Maretimo Sessions - Edition Mykonos - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66318b0f7a2aa8d24cfcb38a7ce88140f058886bd4752a3857f5370d962d3a1. 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/DEH330600215.
Maretimo Chill Radio - Best of Vol. 1 - Positive Summer Vibes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e40882c05887ac123b1e17ded2f73af3d60c858b7ef1cf699e2fd74067cf3e. 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/DEH332103866.
Maretimo Sessions - Edition Ibiza - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dde7729661f93d58fcd789a53fb577e909f4e0b1d33fe26c9ae9ea9908b467. 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/DEH330701915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c85199be475754e8ed5932bb42432783f095f3689f09742b4085416ba97340. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH331302602.
Spring Lounge 2013 (Sounds Like Sunshine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f72249c2f1f5b9dbe7c8f1d4c4ee05106dc7321b5671bba11333915b7363ee. 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/DEH331202488.
Best of Del Mar, Vol. 4 - 50 Beautiful Chill Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b51955ba20783218abc86156dfef284c6c13a2dae11d920aac8595b5e48aa. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEH331202498.
Mykonos Chill House Top 50 (Perfect Grooves Del Mar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c0efa3d76bb35459609cdf416a11ed7b006ba744ca6dcdebe25ed0153c0101. 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/DEH330701914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c254934b5b37d66fe8b80efc03c9696d2d2597b3d5b6b1542179f7e43ab645. 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/DEH330600392.