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 0x62abe0d6a1e5c2dd651233fd9a4bc313545dd6c48235f3b5283d16c8fcec34df. 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/0f4b5d05-352e-430f-939a-0137f03f6fe4.json and https://artists.proofprofile.net/proofs/artist/0f4b5d05-352e-430f-939a-0137f03f6fe4.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 0x8ec591037fdb6fcbfd615d86c25093068b8703037ff1b9022b063d065d8eaddb. 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/QZTVM2336107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd774fee5a1cdbf955c53044927f5ab2dd9a11bb314808fe9c927ae39ebd9b22c. 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/GXBAV2369143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bd7cc109f10c7a61b0eedd9e6a34514bfdb4a388dc303b6168cfdfc933d927. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GXBAV2369141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdd51f0d2ef9f9096496bbe11c650797bbc080fd308208d5d5af54b35388018. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNWU2414822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8363622f544a460300ad510b95e302166adf93335dccc8bd7482a12f9db1988e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWU2414824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb359ef0a756c403ae36992e29fb0d9bf47c12855dd207a4c8416cb39aaa86d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZNWU2414825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0dcb6239ffa379f6437e457c2f47e1de24d9ea312b424aeebfbc2529d81935. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZNWU2414827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bc0b131738b630ff7a900d72c68b71603ddb39edab172f586276b32131fdf1. 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/AEA3A2325727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3ed8c51875bd8eda60dedaf766a88fcc1bf1992ec994d102c3e92c1981b868. 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/QZHN72567709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0167b4f5349a89988bb99a4ea0c30ce1fcbce2ac19e7a60270b88fdc0cee18d0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG2290044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f04de72d3a65addea2cedf6bae34561b638891610c479c56b7c95d5ba6b482. 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/UKXN22317442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36456773bbdd197c87a59dc66a7d460d59566d2f810799d4797e5e12eb98a396. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXD7G2439907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ff9419698878fc3aaab2ed1fc345ca8e522da968001f96ba4de1f747f0a763. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2534988.
Botano (Útero Baixo) - Destrutivo - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f036d23debc0cf2620a83c47bcf9565c253439d52be54c66ecac10aa16fdf7. 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/BKQCN2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb030f2323eec50f7cbc9360593345d8ae1aafa3b5af58b8807f81449329c0a9e. 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/US7VG2491237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554d9a40d8c1e02c3a1d7b7d3557c3a7b1edf37e7b100e213be672ae0a72ac37. 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/BKLZF2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5e1885d4118b9801334b3a7968b40a1c05accf8b50c7f024f9b9066c8a8d3e. 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/QZGLM2555985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb030f2323eec50f7cbc9360593345d8ae1aafa3b5af58b8807f81449329c0a9e. 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/US7VG2491237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa244c129e0b5e39ea8f5ef1811fe99a32aa7e064d0903c7d9a5ff894d87506b8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BKLZF2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893e192296aeecf6febd26cfae603da6427b391d7f0c928e870a1a498cd75761. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHZ51976800.
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 0xd8f64644c82a3d31c98d314d7b9656328cd588a755e59ace858dd7b62c35cdb8. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/BXHPL2400005.