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 0xa4324476276393b388521957e5db199c8246d75055f642364da1fedae52617b4. 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/c77d9f1a-9f98-45b7-92c9-b6d379dcdc2b.json and https://artists.proofprofile.net/proofs/artist/c77d9f1a-9f98-45b7-92c9-b6d379dcdc2b.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 0x9858cf0706c67275ee0fb93f5c238f1aed806608563ce86625fd4a0fa6920ae5. 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/BRUXJ1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f369092989318a1ad6b51812794054b615d61c3119b24fefdb2aa5392e538ba. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/BRUXJ1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aa0c9ed31f41804a8bbbce71ae907541026a134cbd3f47694b081d73feb65d. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/BRUXJ1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d0a91e74a3e92a3b3b1e41fbdf4f5bdc37ff9d72da76edf4162ae4e8a5931d. 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/BRUXJ1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b15c1e0900e395898677bac051db5e19248ffac977b618354882234248851ec. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/BRUXJ1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc917810979365d57693d7b042d88c2e76ee3d6b79543fde1ebdfa861365c722e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BRUXJ1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d97d2ebae06ed0a0e6612943d8437b063b50d713e3e19d8426dcdf87713d29c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BRUXJ1400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce1f9904d53813464ff9e112dad6b0e5faa0c803f306afd5c76ba61cc91542b. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/BRUXJ1400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b420cf3f7ae656e84f8f2f506f89fb2e0662e38d8249969e900cbecac2f9c6a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRUXJ1400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07254451885ce2415bce09bde2f9732b4584c543f6ee43a3b5548bb38b3ede3d. 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/BRDQL1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fd231bc28424289ee19e386f674d85e900d3e40c93407faf2ada32ed5a12d5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRDQL1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29b9e11de14e6d294c10de35834809fcd516cc98b7c8d5374306a930c1ac9ec. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BRDQL1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28b69313455a4cf6fd867f4c263bf4fe96d2b8b080808ebd7d60fed33e9046c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BRDQL1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548a496bc7cf37294270017d6369b0c6de04d92c606d52bda0d679abbb69867e. 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/BRDQL1900004.
Superei / O Canto da Liberdade (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45028ad5a47dd60c801566033ddbdfd1f75f8f914beb850389285b8483ca35a. 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/BRDLQ2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0806570b9e242b9f43353bf3b8e4e134b2bba97ff92a376ff513a4cf84c1ed. 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/BRDQL2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a10ef80ec3fbd7edd489568c7f8fee7cf2d4a239ea3501765d6f0d0579965b. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/BRDQL2200001.
Superei / O Canto da Liberdade (Playback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad620f44eb7d851e26d5fe7b7c30217d2cdd42d987e0b680ed5f49fd10b4c37. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BX4402303007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2234f550e5c8d2cf19056352d59c5e8f8503dac51755b36d0ae7a462be7a015. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BX44O2302086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc990839759e546de67ea3939cdac9adcc41d4f35ed9b7e821ee41f5bb0449bb6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BX44O2401259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e937af799fe9a55e4eeccf15d33fecc0db3642e3ccd74d44601df6045d4316d. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/BX44O2401691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b1f568ac4d094027b717701ecafe3ab848c0a1edc53a63e5e39979526e254e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BR3FD2500001.
Se Eu Me Humilhar / Sonda-Me, Usa-Me / Ao Único / Mover do Espírito (Ao Vivo)
Se Eu Me Humilhar / Sonda-Me, Usa-Me / Ao Único / Mover do Espírito - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f523ea3c9d0c5f14f579b0c6548c442900cb2b4405a3c0db106e2c4cf262c5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZMZ92563890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023df576864a5bcfee79479505b818db0cab314bf688e8755ab2fd2b6be52d51. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRDQL2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0001ff8b63f3fea461db6ab36df943baaa1a20b4bbb036118a62795e4577205e. 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/BR4W12100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f07f735a26523781539e4e8842338e826d744c7ffae830e43a94ab68b9e827. 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/QZHZ62079153.