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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6246c2e47090957eddab0ef4fd892284888895436bd2a463cbc59adf2fc280. 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/df7bd3ea-451a-4928-815f-4ff858001dbf.json and https://artists.proofprofile.net/proofs/artist/df7bd3ea-451a-4928-815f-4ff858001dbf.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8d91b3f31452f31aedfad9f0c2a9281173a418eeb74733ed358baaa9a0a2c1. 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/ITA061302823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe673d02d3ffc0578f69c8f42acff81bbd41142617e6c61fe8a023eb1215f8c4b. 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/ITA061302825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca096dda904f9416997a58ea817b08840906aa80d0f3bb4f0d3217600e4d5751. 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/DEPI82503560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beca8d52ecb44cbc9dfe6d50ff3a42eb563a27d08f3a3a8435b073027100426. 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/DEPI82457870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67126ce0039cd520a2d8d2b3b8bd5d7a024edf21569dc519e8fe94a1a3dd25e1. 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/GBK6Y2424701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dac5b9a31087555d88ca5f5b4fef1f2086de3866df44bec847ffc5bd35a6e9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBK6Y2424702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85292f13db9a91a1876370a5470e1b985e07d4815c67ee5b471f59100232f9e4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBK6Y2424705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4efba4291026f62a66244edccc31211e8d4202c9c63117762365c3590e3e181. 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/GBK6Y2424706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623832538e5db5c70574214afe4490ba9d51bd1012e1af4b7101fac62dc43290. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBK6Y2424703.
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 0xb1f16b2216819547fc771a11c24d545f30f9a627c18fd302f49ea359fef91621. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBK6Y2424704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e055670b5fbfcae0e7438eb99499eca04146a094a32880bf54b99e7d124cfb1. 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/GBLV62300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabbd80a0123f98c46f92fc3c2ea8d1123ac6c4bf65e8b84f6786835008befe8. 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/GBLV62300547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec6fa574590545794f174dec825b5659c1c6a498c1f898bc4611cd8d57823e6. 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/GBLV62300548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f99df795f8d478555a8b7bfc447b31189d9c2454888b7d67260250c83e006c7. 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/DEPI82320972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0d128dc0b86cc40e45cb9c74cda280b9fde035df9b03b098bd806aeed2fc15. 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/DEPI82301609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf573b97abf76de2278cd854faf25fecaef7d45227d81cc0afc5da95a17a4648a. 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/CHA042200343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1618ce3c3ea4d4021443908258dd5c38e9738ddc8996895d585c9ccb42fddaf9. 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/ITA061302281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b604fa1ae0819a8e90d94989e631651703118ce882ed5e2082381724b05fb3. 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/ITA061302283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f115d55c83d98696993b534709930ba406e4d6bcc430f8999c3abf79dcdd17. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:56:41Z), 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/CHA042200281.
Swan - Mendo & Yvan Genkins Extended Dub Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e72cb940fef2a17ef25eae6c502fada69a6c41e2222a4ede8e0db9ffe216af. 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/GBJAJ1500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf645853be7d59dbcc08298f9160c7439b444261c44223b60c93707f50c60a8c8. 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/GBHAD2102561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bede49273379f507b4f8569e20a2f5535fc2bc8f40d1da18b179b07f371e47. 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/ES7842028221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61f69c0e2128f9f4b358c41301be679c8273d6942a024ab19e53601347173e4. 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/GBKQU2053658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa05b1e9a5fb86205122e0f6f1e83cfec30662e3b0b21a6dce22d19908a2a54. 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/GBKQU2053660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0bb8ace24ad4d713156491ecc6251d35c6f960d6731253820dad18648b43a5. 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/GBKQU2053659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9355a8fda6202edd68a8b808e55ddc2535db6fa91bbef6613ce1e9f430b5c07b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBKQU2053661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218eb907b986afedf465456d341bbb8ae7118b4b72028871b689fa0a2cfbdad0. 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/GBJAJ2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b961d82df109d20a1053221b2f56c3533487fe31d4ca796155778211c2e4da8. 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/GBJAJ2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86264281b6794d7653a0acee61e9ee93cdc0b8ccf85cd064b585f7015d053a6d. 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/ES94G1917003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e59f8c56096b11c840aad6d716b94485d52c1f85cc4c44e93c693c631cfead. 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/ES94G1917004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed41744265d3688d3f16d39dbfb3485a3769ab1a7afd58946cf9186bd81c191. 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/GBJAJ1902186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc540bf6e172cbb040a2389f4f5ecff6d32f052ff865984774a0314df727dd62. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:49:23Z), 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/GBJAJ1902187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec36cdf697a82e7c1ec4ae4fb14d7394e137843bf029f092dd03ccc4c65c5ad6. 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/QMPLY1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320c3fb4691f02ac3483a98f1de0829eb65de6b7d389702f504976d4e6be14bb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBPQS1900108.
This Is Toolroom 2020 - Mixed by Martin Ikin (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb946a6606ff79120482e74f82486a6faa3986b018e327b418fc1f7d0ff994330. 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/GBJAJ2000141.
Cr2 Presents LIVE & DIRECT - MYNC, Harry Choo Choo Romero & Jose Nunez (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6b7b6504edfa04837b00e559c77c4fc47de18967f9823205abcdb74dc96346. 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/GBHAD0900405.
Don't Turn Your Back - (Mendo Remix) [Mixed]
Global Underground #45: Danny Tenaglia - Brooklyn (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5ec7c907b4c6ab5261d5522cea35141580714a19063cd55ed45e68410b2fc9. 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/GBHFW2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec82f3230f37521195e7a7711bd9b4ae7f11b9babcfe52a86e1a4a98710df0f. 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/DEBG51200119.