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 0xe7109ce9e8f18dacaf138ccfe7e7916adeac63878e2ac3b028ac43317ae0bb98. 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/3c7580d6-3cd3-41e7-bced-5c7b1384e6a0.json and https://artists.proofprofile.net/proofs/artist/3c7580d6-3cd3-41e7-bced-5c7b1384e6a0.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 0x1f2e15c4df842ecef27f0d8ec8a3ce0fd7a88846161060e812603fb313059fba. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USCGH2004343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404fd4cbad9c48c777b026d02dd71149534e67d4b48575294552f54ac07da3f8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH2004345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409d36d8364c2a0d3f98277faedf0a37811c674d82e9c643df4f49acb77d6904. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USCGH2004346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b15def2d44ad49634d3b5a575d399c7b06941a26bfaa667cc41323f0dac23c5. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USCGH2004348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4f1ba13a2eb6f5dafda51f4e1d893bbc4772172feecd912e40332992bb480c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:14Z), 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/USCGH2004351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbaf9301dab7f369aa762654bfa9526d40a8c666817703cb25a33e0c507d203. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USCGH2004353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7047018f0a591424c673b0e875a79753fae70097ed9d8dacdfa23f19143c48c. 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/USCGH2004354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cf430a1b364210348d1291700e2081ef056071fb7d9fee088b5cf151f4a452. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGH2004356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13032cf3fc5dc6bdc55b2fd7b93cc92df9f3ffb123cdc4d8e39c053850265ea. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH2004358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb070082eecd6c698a9d856a022dfc88b33ac28546440eba92064098117b4a1. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USCGH2004360.
Ronda de las Flores (Canción de Bienvenida)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8537163bb2f48807aba46d3952d18ad098f71131869a1b4bc9965fa27077502. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM82131647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41747e708d6dee38dbf0fafac33b1cb4a896f26f3109de27e9f69f150eb5765b. 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/USY282305676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0db340e7b817e7d891e1d338fa82ce04bc9cecce6b4df7551063fbe4f06fbe9. 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/USY282305677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802aa7fe8aa294c0f23ed6cca2c9e9007643a20bcd88f1a0d80671d992561baf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USY282305678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308768e6c8624b07d6fb69bbdd8056fff709b53bc482ced8f2083f5db12aaaea. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USY282305679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96eec3c5d9025ccdcfd5bfc66b899acc9c8b3f5ac0075ba46ea4876f2c3f69a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USY282305680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62032d47ac323a094a2ee1b87022947d1eedacd274a7f7918ce24d586f66a1cb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:39Z), 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/USY282305681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d08307891cc16e4b8cd49c888bd15c35c031d3080cc1cb2de93e35679a950. 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/USY282305683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9599039092e6b811ca9b84cea24a6182f822d5f005a60c08de00802700b8e2a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USY282305684.
Ronda de las Flores (¡cantá Tu Nombre!) [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8595bf65d3c72cd508a3279e33bf799ff2f373cae863052cf6f59251963bfe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USY282305685.