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 0xb5f342edfd07c978618ba48e9f453e508833b971a6782f9a10c7b2d46c382dc6. 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/d07d4c8a-f8f3-45d7-ba72-0b7360daaa00.json and https://artists.proofprofile.net/proofs/artist/d07d4c8a-f8f3-45d7-ba72-0b7360daaa00.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 0x6457e4f821ce019571aea8ca3add8fee3d3e6c36d6937c715024ba94ed8f4242. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXQZW2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb8bb871e25f8b5977a7ff7dae384fab56319caacac66c23190a09ad38590ba. 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/BXQZW2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357e3a08f7728f6a2f16ed7aa75c5d979a886db6ad68a9e8faf2b3c9058f5eb. 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/BXQZW2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42251397f60c950fc21abaac576eed5fd160f7729d6b13d127fa5b00e32c3f7f. 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/BXIV82243485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e020b871f58853cdcc3e3cd89744391a5b59ac73cd6d073066df66214ed56bd. 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/BC0RB2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf8ba1e37cfed333ca6f204f1220aad4c0d55c12648e6b4e610894cc3979946. 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/BX0902100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c43aad888809fd1365b2c07f509295813073a62e1e007ddae2693f0748213. 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/QZHZ52060945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65c00af22d360a09dad6fc76b54d572fd0f8d4307f01c752cc3bcb51333a1fd. 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/BX5UA2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c207f10dec0174c54d616a8c3f9a3ba6c3e50c953f3b0d88c612018f91a9a7. 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/BXQZW2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147738480f46dfe7a32e23f0489db9a56869c929bf4a9dc7e868c157a304801e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXIV82483850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78e9220a271d2e066cf22f7d5d410f57186a0e39531525405b1a4f24bfba3a3. 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/BXQZW2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9713e694f66db471e370226fdbc3cfaae47285818e41199c9ecf3eb355e66072. 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/BRKO12300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ca6f3f2665a5e09927be09181a43bb7a79f8c8107ed03170103ab32efb0842. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJV2468587.
ERREJOTACULTDRILL, Vol. 2 - Esquema Novo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc4380c4b598064c73001765577e8d06a71f0ee7abf3759d336177d53bdfb9f. 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/BXQZW2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc64a9bc5b24eb416761d1462f600ed4927aef236284be37ab9c279e9ee14201. 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/BXQZW2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cce4dde9efb30f44936b203c89ef69e1b4b9f9bcc214e4d877e588dd7b9f5d. 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/BXQZW2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf473c1e9470224055e1ba02c07b359d006d71e2bee309e2e87e363549ddff947. 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/BXQZW2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c207f10dec0174c54d616a8c3f9a3ba6c3e50c953f3b0d88c612018f91a9a7. 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/BXQZW2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357e3a08f7728f6a2f16ed7aa75c5d979a886db6ad68a9e8faf2b3c9058f5eb. 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/BXQZW2300018.