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 0x45be624431bae04c7dfb5547aeb614913300d47358902c25476f67fae71603f2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef14d7af-4587-4109-baf5-c964945a3208.json and https://artists.proofprofile.net/proofs/artist/ef14d7af-4587-4109-baf5-c964945a3208.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 0x0770d9ccc600d50784942cd6dd1014cb4671686fdcb2dc944b440bb7358d92bb. 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/BRUH01600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7297902143ad7d83253a4828022281db37fa815e655515fc80032907b1df7cfd. 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/BRUH01600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e2ee528fcb60f557d303954119133ad6d03d848accbd8f55909a2d946b5a24. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BXI9D2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a1e236d39a6b30acbc933c2fc77f741fe4c3c82cd52ff68511cf2bbb1072a8. 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/BXI9D2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1e77d94c2a021dedeab16eb5b2c52e2a35ee60a9991b8cef8a5609074bacc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:36Z), 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/BXI9D2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d57369cbf622021f4ebebd77cadd6dcb84134e3b500ea8878cb6081ce7e797. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BXI9D2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee9f399b5596e5f31f00ff464ee070002c4839191517be5b4ec8cb6ec593af3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BXI9D2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb636a156b6811f70daa2b092f7a2aab68b5596caf407cdab7095d302aa6525a5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:18:53Z), 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/BXI9D2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8252c9569e649b4912e1172d4ccb2ea730f7ee7e9fe4d3440968df8adbd3bdd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXI9D2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c281658f30ae393fe8c0d14eb6d2c4b3af018d4fc6a6631245caae37530f0d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXJWJ1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573af2b5328f60aca3f16e81f8e9a45dba9df3698287cd51d6efef8b42b38e60. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX7T12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aafbee8e841e9c15f8ab1645a2d8261501c53bf5ed92e3711f41fb86c1a1b86. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BRPG22000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36ef304057aba00572d7ea8e0322cf5312d8e7aa33c62ffd955e9293be93f2e. 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/BR2SH2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147ac8f8d0f7490e955ec7591e0340636ad35678e00322ae57b4096f5c2a3f9b. 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/BX5W22300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc0194d6a777a4e64bb30d2f3da5f9c1f58cc297ab411cbe59b7e2be8196fd5. 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/BX5W22300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbd92d193e973a19db53764e3cf9560120bd475de1b6153eeb2217a621bd88b. 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/BX5W22300006.
Natureza Sonhadora - Tributo a Accioly Neto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6864f34894e76283495d5fc1999831327e252d00c5d7eabafcf8912c0be08d21. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXTY81900011.
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