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 0xf1461efa5f5d664b7c472b154346080125c4a39aaabf5f50db9a88009d2f6582. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/463efe83-b3dc-4758-857f-9349e4a53072.json and https://artists.proofprofile.net/proofs/artist/463efe83-b3dc-4758-857f-9349e4a53072.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 0x3bf177073f122921afc35897517ff004948e1dc00d8c20302e945ad2f56e8e49. 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/BR2SH2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fe5fe6fd6ba5cf5d5d9c1222939e3d6c1d2a06f9de3b6625daf0dd85487d9c. 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/BR2SH2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b04e050e5e9be25b5c8f1ef46155fa8b3fda45ecf18d5d67780fbba8157de7. 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/BR2SH2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d54628e0be95adc4b3f6faa65d1e23e47b8ff008a3bfdb6e3bd92e5f688e5a6. 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/BR2SH2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d6e972d31f4e84fd71ac821961bb1fd02c539e2bacfd6a77b945c840f16352. 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/BR2SH2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a6431b49e95cded203e27f584ca716e6d698a8033d0a993b8ac779f2487fe7. 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/BR2SH2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f80a71d895bb2abcb2c811bee0c779620364edf1bc980a4611f610afd8aaad. 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/BR2SH2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7234d1e85f4ee67d567afe8ecf9a2329685c4565667b7c8a2a8773a78b660. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BR2SH2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b5c0a41e2cb5504c1c5693a0791b271b73a2f49107dbf333f0b8235785e9a5. 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/BR2SH2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7151738d5968ebed7ff0fa63e9123eab10cf062d92e236ead66a26c8e552d4a. 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/BR2SH2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d71819addca05554ab3c4069162a423a5ef011038882a5aa136969439586a0f. 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/BR2SH2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a40d3424aa5540a0f387a50224fcfba49160ed7a08db52fa76c81de0f0acb. 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/BK4122400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5eb010633ca839adf5138430575a9172bf680df38f99197d0f52f523cb44df. 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/BK4122400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cfb34da176d546bd42ba6f22acaff96c78eba8cb6a46fb2e79a0621defec8a. 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/BK4122400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d49ae4a2c55174da36f2fed164546a1c6cebc0357c653ba0692a7a51d21fb19. 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/BK4122400005.
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
Manual de Sobrevivência para Dias Mortos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e7f2753d357863921f54c84af5d4c170946d9cff3e21525b9c7f08e84bd26f. 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/BXZ9E1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261025a14cacffef221852ae4b34190bbcf9f5cde1289b6be0c810d4fa618463. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXZ9E1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b44ee045cc51e480ecb6acc22fbd485e6f10703cf335aad587be69ccbb858e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXZ9E1900011.