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 0xbfbaeefca21d4829a5397b26452283ff5c64d210b0e928224c71e403639f29ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/617de497-19f3-41aa-915b-3a2dc79d299c.json and https://artists.proofprofile.net/proofs/artist/617de497-19f3-41aa-915b-3a2dc79d299c.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 0x6b1b7ba040d275cc2af4825d27d81f182267fdbf4af22bdf573db5db8e697580. 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/ES6101800322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83aa47c3ad6dd2e8a30f3bdba938bf525a428f6c2cc81f039e42d97462966e4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ES6101800323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d746c5321c885d6465f656b57563046244365b16bcd38b3ffa59dd67827e5. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ES6101800324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173c6f198f5b630a9bc610bf274d8ae30678dfd784ddc2ed9fa82556af56751e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES6101800326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37450aea299fbb4a87f83dd2449e05c6a7209a89676f4316b0d8a7aebe431cba. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES6101800328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7115c4ce949ec80cb6418f048e212491fc886ce8d792d44ce1a2bb283691f9a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ES6101800332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8284c3d09936dc3ff798a4f006fe0312ce0b4db77c79391a1f507defe1648d20. 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/ES6101800333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42132944a4fb0829f6a2423ceb4f7a99eb68091b8ccb8b48312a71edcfad476e. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ES6101800334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fb0c1ed89ec0b06a8b3f1f11651aa3e01aa8023df9f3f7a3f16ebee6bd9014. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES6101800339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c9932fa4943f40b9f6a9d69c44c03f44c9baeba3dce943e0eea200693767a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ES6101800341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc430c1ab376c70520252779d833aa1baf8d849403268e68ba3bc3794ac344f56. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES6101800309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f56b380381139403b209390c77ad11a131ae26b584527d24f54b24ead66aad3. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/ES6101800313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe715c16e338dc33c681f49d3fbb9a275d56ca9f10688384da6efbaecfdd45c28. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ES6101800315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2275704db5663e4a19cc2fa4d227a0ff66a623eb307f940c973c55fbd24c05ea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES6101800276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7579d557d866489b8d667cb6445cfdb3d84b31e7504efb3481aea64c58190cc1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ES6101800298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7533daba6c791564116397615f5ce2be2f9584b6da06212e77bf2e483a220f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES6101800278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b772be7dece7724eea55c4a260f78f7f1ec0756bcee419fb364df37a6e879d0. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ES6101800279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30b879c29ab562bdaf272050cfe8e9e8fb16320c72d119747b4887f6b8aaca9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ES6101800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89deecae5e34ef457eafc7e65e86c6617395bb53115ccc11ebced2e31df6c84c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ES6101800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2ada50985296edb15ef51b597295f07c5ee42a7b2ee863969c954879a25e97. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES6101800281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429f15ee12be73f46ecb34b33165779eb3903d0c50d3b9812c551011445e80de. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES6101800302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dbe26bde7dfbb693317c197c21f165e4788eb80d2e93fdcecc5ffbcddba02d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/ES6101800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f5661084d0f3d877a88e9ec5bd43a05f2cadc64dcd1b3965afa226e1d7eb55. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ES6101800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2920287ac4498f47aba4bf6aa0328ab259ed7c281bdfbf050aa021a7b380b7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES6101800305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021b774b0b2fdd1dd3e981638ee3ac06df7b394faba8cd37666d5f978e90c051. 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/ES6101800285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b6d7932f11f8dcd119a4cad102f1f24eab13a2e7261b5f4f3b0187e5e578a1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES6101800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1d8c249a7bd1e71cd0a8d7bb33ccd92572ca1e6805fdef828b0f69edf33833. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/ES6101800290.
World Music Selection, Music Of The Andes 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf1af877d4c172c644c9927a125e15bc7c637ef53fc6e9d2a81bd6e4f169044. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ES6101700970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8878b1afe362a7d196f0e53365b3a6fcb0abe77d773f85a4818cfe181a7752a6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES6101700973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6c2a88ec6e2412b584ab85679c8ef19a352d602e04ca5cb182ab6295b07ce7. 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/ES6101700977.