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 0x61eb571bfbdd89cde91b343fa1e81deb9e9e0d54d5b96eb0960c700fbd3396ec. 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/82453194-2bf1-4d25-a2bc-9937f7c54828.json and https://artists.proofprofile.net/proofs/artist/82453194-2bf1-4d25-a2bc-9937f7c54828.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nelson Nascimento (O Rei da Pizadinha) [Ao Vivo]
Fazer Beber de Novo (O Rei da Pizadinha)
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 0x9c0153dc890c84a86766177b7567628949a394b809795e46ae0bea4f5f99c57c. 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/QZEQU2064831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135a5d8b3dae3dcfd517eb3f7c7cd70d10486f3576e6a78d4c9d57d6ed8f2d76. 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/QZEQU2064832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7669494d74fd5b9ecb167035a9d8914413495bff484c21e726530b4ae19fa903. 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/QZEQU2064876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048b459b7fac6621ed8bce6c4494477b82c84806cf081a2a4f92b679a0687415. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:35:27Z), 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/QZEQU2064436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa326a60ed1ff7192daa20d8cfe41671027c9f66b6bc5bf3fcc3a374b84cc08ff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZEQU2064847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e042e96f1b193fc927a2da5a578aaa57232cce653d797fa2fde3fa56329d84b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:05Z), 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/QZEQU2064848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3850390164231423a6e2c286b3205491501f3eae4406e974f0e9287176fb5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZEQU2064858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81381f54ad9055741bd80cc39f03090391dc2779d522640d38735dc55371863. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRQTZ1810277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94378c814a292e93f053a7fe8c2da2622e5cafdd935db0e57e23b14155f6c2a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BRQTZ1810278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec1b78ea51febf8d8bf00969d29533357f111b4ebdf0752d7081f0a821e65c. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZEQU2064800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839d7c09a540107583992cab0a98d0a2096ab9a0b66b16e28cdc87756e34d60c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEQU2064818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb9cf282ff7bc20ed6829b400ad9d6e1343c4b8c03370d7aa1beaad7b411cc6. 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/QZEQU2064819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c770c8c095e9b285a283da03ca0851ccd5f3a76ecd87bc0cb308be5fa2744. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:49:36Z), 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/QZEQU2064820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4e99745c1c7c5765766d88566587a24b1b019bd6db0cc8325c831926096466. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:11Z), 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/QZEQU2064822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5f5daddc7764f243e9ffe07a5f5b001c69f3fa7896e98a6edd5a0f4715eb50. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZEQU2064823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc548120139af395e50f1c31fa3b5354568839ed1b7e53e5881cd44b4aece8da5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:54:46Z), 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/BRQTZ1810266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9f174e25401656f6a7b430aa317891b591a80134ae151a8f5ddad49c537125. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZEQU2065209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b14f25c2f76d69d6ab39aa51e13b4b6d0ef028e01a7e1bd1453f072e8c8bed5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEQU2065219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6094d821a976f888a6bb653c250e447a65000d4d3fdd7a52e8181f2fcb36538. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZEQU2065222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b8ec2c40fb1f73fe2fdc30e5ee91f98bc9883d6ad639bbadc6603aee4e6e6e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZEQU2064812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc747e86444fb0d0a5638b392a14117447dd7e40d559225aeee295d1a72c6fd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZEQU2064813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b1756035d9dc2e096325078e27666161b273969e2b65c55999383f991f71a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZEQU2064814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1055de6a7465b59be63815ec3001e13e628c212e98103712289f4864d27c17c9. 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/QZEQU2064816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a969d552835cf572fcb74e66a895c365cc88aa751446e82e37f76a2e51181. 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/QZEQU2064817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9e32a0ab7a2cf383aeb2a779b0701faed0fa5fa506e9cb1372d790b3d0eaf8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEQU2060205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617a71ef3735fad4d4a7d772e4411e15cb0511ded639e8bdcc69e059296a6b07. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZEQU2060210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee0c2dddcd42f0fcccfa209a42fd8e718085fd1d8eeabb04c1e61582d111d19. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEQU2201987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaf265d8d669e2e5d6993d1b9710ce44157bce0931d1f68e03e9c788143a7dd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZEQU2201988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf7949f78fe744e93a94b43b38395871ca6a8225cac95a19a645916d203b7f5. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:45:17Z), 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/QZEQU2201990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60a4cfb9cafc1e7835ae40761e19bac2e1e4f19c1856d91487ca96bbba0fc7f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ES06F2504017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f60821e5999c66da1324e776cbea7d8ecea4264cd324ed9c459b9790159f15b. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ES06F2504019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3918dbe97c34a24128aef2629720bebcb1c4d2a72d4d73c93961f59b008ed1f4. 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/ES06F2504020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c427c610b543282ecf1dba44fb6e3a984140c2a763793f7795fc1d186fdbe7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES06F2504022.