Macondo () is a fictional town described in Gabriel García Márquez's novel One Hundred Years of Solitude (as well as several others of his works). It is the hometown of the Buendía family. Aracataca
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 0xa1c78bed8199616f5a79a9e3b2b7d28ed7faee763a8ee89c16cc656f3a12ac9d. 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/bd42f5d8-63cb-405e-af24-034039c48189.json and https://artists.proofprofile.net/proofs/artist/bd42f5d8-63cb-405e-af24-034039c48189.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 0xc781cce6a3fff96b119b0334edbad44293acd7e9fcf6427386e8d8e22f87ae5f. 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/COF019900235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c2166dd6ab4a8d7099a1b2c5ccb7e1827af8fafde2651e4fadac89dfbf455. 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/COF019900242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ebabaa3fc264c1add628eedfd7ec3f06c2805d179875b19d7abc89c3cc8d6. 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/COF019500473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39760501cde525dd3ab71ea01d8583950e315ae33804338bea1df346842d2ad6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/COF019401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39760501cde525dd3ab71ea01d8583950e315ae33804338bea1df346842d2ad6. 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/COF019401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39760501cde525dd3ab71ea01d8583950e315ae33804338bea1df346842d2ad6. 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/COF019401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ebabaa3fc264c1add628eedfd7ec3f06c2805d179875b19d7abc89c3cc8d6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:10:41Z), 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/COF019500473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4fc435322e9fd87f67d74c72932a83c225ed6d386857fdd178974ebf100915. 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/COF018700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399b0164acf4ee1b365dba32c3dd479b951970367682c7c1141a6d64b54e8434. 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/COF019500698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdb438c9bc5d4949f37db73606b07c6f25adc939820213841e2c859a46bfd4b. 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/USCGH1379635.