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 0x3d240cf1a94a99dbfd53efee0b25cab67f730da17d7a62b1fa6a3c1a6db7fa47. 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/f2a2be21-cbc4-4ea5-a753-1340719c9856.json and https://artists.proofprofile.net/proofs/artist/f2a2be21-cbc4-4ea5-a753-1340719c9856.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 0xb8cf937dfe3ae82727f2123d7f33f539afcbbe48d6f42b65039f623eb29eabd5. 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/BRGVR1700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f70911890a31598c0ab73de525958c733130f226983dbab94e0aca52b7f465. 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/BRGVR1400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30ec02d0848da2533d72778e08bac7eb01895398a4ea5bafab850f623167dda. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRGVR1200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f56c49ea6a82becf5d6c9a521f4d9a00017ec7891d35f7465c595c00c44be0d. 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/BRGVR1700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948438150bb57155ec904885e74e0eb6079ca102615a68729169247274307ae7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BRGVR1500113.
O Homem Rico Ficou Mais Rico Perfil, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9374b2c8834543ce72590738c68d3827c00a31ab72d7c27362061a41b926e0b5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/BRGVR0500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cff8699b4fd69df22a3a4b7ad7f3c32704ba361e3952c00ad9f34a4ce095fe. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BRGVR0800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa211de818422d562db06fb58fc2f80679b1e77654c53fc6dfc12977b0260e71. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/BRGVR1400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76513b4fb2302338a3545ad52552d3047213f2c230ee9e69ba77db8605b911ee. 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/BRGVR1400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907cc8a4d5f90dcf79dafcd50aab668932a418d279c7c1b8c8e0320f3b8b960a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BRGVR1400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd811107f60afaa3e141ed9d5022c831fcea85a3e47e5eaedc2cf4458a478cd1. 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/BRGVR1400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f42638d9c1151625bf904416c76cba46037e09edb9aae4e70ffd657f51fcc2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRGVR0400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ef1c1341bc922493a17e3e0ed6433dcd0e3acfd23809c4335703a866f210f. 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/BRGVR0400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4df280945c013aedaca426770fd7c4d4066f9e4c769be2aed7565c10608ade0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BRGVR0400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebf5bd58064dfc07b38e540bdfe1207ba7a6a1333866820eee7ea482170b1a7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRGVR0400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc278d3aa9cc5c5d973072d252c7df7639ad7ef01435cb1f4b5793bc0cf8862. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/BRGVR0400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9953adc3a0ae690080856554e88586f6f8d9a4111af2a28dd4d25f34d197c9a2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BRGVR1400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dd95aa40dd3de8143bbd013b1590945675846d43024a4637b096f34e4ec44f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRGVR1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c1b93d1c2c28fb151b8bd4c825897f50f982e7532d030a2a0079fa83a0fe3f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRGVR1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fc0bc64dd16e95ddaa424f2ab56fa81159eb8f54810e558fb1c8c85d22178e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRGVR1600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ffced25ef76716fce86e0f5a730d5b998c18bb44b32ec5e4c60fae1a647b48. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BRGVR1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2377c79fe9b33940129a334d205973c01a1cb07a5e0dfdbfd5b5bfb2365fe66. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BRGVR0500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7ec460aa6e061700a7c69e27a7c52f46d0e49796d00bc5530c60b5de3aa564. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/BRGVR1700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a1e2930c080b0d444ea24ccd7e50ea35e8af96e015b3841156795d6a403c08. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/BRGVR0800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa211de818422d562db06fb58fc2f80679b1e77654c53fc6dfc12977b0260e71. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BRGVR1400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d33fd84db9f4f2974dfd960f1490d2643a37bd08339c5ac898a502287c8c1ee. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRGVR0800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45206a6c19705a4ef15609b908d50ac5e0f8718ff63113b4f41c48f5e712ee95. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BRGVR1400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95600513aeb34bf9da7241ee82054dc53852ec04b81c2a4b4cb1fb001b0be693. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BRGVR1400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d563cc5f7476a62a0e6eecca4063608f0594c639278eb6f14ec23127d4e05f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BRA220414086.