1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9b118f68aff2cfd593cfebc388b0cbcf495cbe57dad1e38477ca550c531f88e3. 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/9d2bc8dd-5550-4cb2-93a1-6553496d8050.json and https://artists.proofprofile.net/proofs/artist/9d2bc8dd-5550-4cb2-93a1-6553496d8050.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 → block OTSBitcoinBlock must exist at that height 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 0xab3f91e6ffbbde9d41ead59858b1afc8036d487fc67c89a0945ed5e7231a678b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PT2DY2400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83886741c60167ae26d9b38c6a74114fc88e6271c59b94bf5521b0ddc06d8635. 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/PT2DY2400261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52145f96410ddbd0e232eacebf0f363160fa65950822088605437a2bc3be084f. 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/PT2DY2400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64a66c07c2199840c8c6d3c834e78d0bcc344fa04d101b43d1ae530d83aea29. 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/PT2DY2400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3628ea9e505a72470469fb2c4a4c8add4ceaf8ae176b48c43d5f733be438f9cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PT2DY2400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a6b925b4fa6ce539baa9539fcebc6fa4afb6809a4a0005f4d6f1a038c4ed13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PT2DY2400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42644a6bd3e42feb4d82b04d1a133e196be87c392526a0f3fe27920a0581369a. 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/PT2DY2400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6dcceaf3ff77c9810cec3f321087c179faadbe545c99e1d6eaf202cf540e7e. 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/PT2DY2400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e0d400ff5e79bb3be306584027b2a59ebe47ef76ccc705c86cdbb4f13d900d. 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/PT2DY2400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3946878d02b6775e066e297c0183c47f99d6c3c016ac65cf7e722115e5f05336. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PT2DY2400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73fc0b2cc111c01ef4f7bea0aaf23e3c2cb6e900dd3497f4fa6d0f3a84e1aa9. 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/PT2DY2400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466160c29b26a8fa1646209dd61b9778d4a5279f29323715f1993a94b26abb32. 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/PT2DY2400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0f8dfe4bdc81a53371b37f713a94a326e05a1aece4f5918dbfc11eff4e6732. 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/PT2DY2400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6369f675fa8b488f060cc51283c0b050dbb72ec52e9c50e0225a980535606dd5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PT2DY2400266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24219d40a6fe54c9c05f37cbfed06e7cd5433ae589a43fa1a22c7bd80c5363db. 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/PT2DY2400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21a073b89c4ac2122e81d9eea9101cc7d072004939729a1b6592d3d3301c6b3. 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/PT2DY2400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc035ce7372bddd4f2f27fa1b6a9a01079b74f6b65dbc02a4519bb886d29235c8. 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/PT8LB2300016.
A Terra Gira (feat. Bárbara Tinoco) - Ao Vivo no Estádio Cidade De Coimbra
Os Quatro e Meia - Ao Vivo no Estádio Cidade de Coimbra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750870edf5b0a92ae2e93896ca88f4db82fe16a4f95950092b5386c785f77cad. 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/PTBM12300062.
Leva-Me a Viajar - Associação Sara Carreira Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119be498ba97cb49fb7450f2d7145bbdee1de8569f4c4023727e3e3efa9904e3. 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/PT6HD2100036.
Leva-Me a Viajar (Associação Sara Carreira Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b346a9f42d6482e780f9035c5ea42274210b78e613197b7684554d8ff3cf84. 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/PT7QA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b18bef99e0a467bac2c00bccde507659e3afa9c78132e640a50881af90e6854. 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/PT1HL2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd799764d9871fe89e681eec7272214b5739c752ff9cd16a3ca02af6b554fe. 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/PT8DW1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d35b91f712b20616460e514c454c733b0258d7ccb1bb36b55653bc785f4882f. 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/PT2DY2100217.