thumb|A gully in Avaré, Brazil A gully is a landform created by running water, mass movement, or both, which erodes soil to a sharp angle, typically on a hillside or in river floodplains or terraces.
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 0xbbed490e04698d01fbda2d7515e2432c4679c654e0d8e00811820617bb21b95c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52c0ffb9-a26f-4e03-8cf4-1615c6138ca4.json and https://artists.proofprofile.net/proofs/artist/52c0ffb9-a26f-4e03-8cf4-1615c6138ca4.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 0xf3b45d571cb438448410efd12d302b54af1363fa6dd367388a96e781223672fa. 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/GX3Q92091331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57b469624d55350a86e2474e2fd43658b4530c0c80812281f4fe97d4df0fb9a. 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/TCAHR2334887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab89b4206b5643a096123da17d22dabbbce6800c37c682582a1b9c8a68ad2305. 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/GX3Q92362719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c0625fe3282c826b5ec4a85dce1de50af1496c29376f3a2b2cb68244db5211. 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/GBLFP2277732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06aeca9b8eaf34743072b87d3e23f872f4fbe8d620a218f20ee0c24e692dc3. 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/GX3Q92097109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f873f8e52c00e05e95b8508af450a47eb25a27956fc93c89f8e346d64987ac3. 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/GX53U2068773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd451bbf51613dabb92b7225456d4b62563c69a1b76674e2c043da5e2adc4928. 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/GX53U2054828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ceeffadde92e650ebd9ffe8eb38a38c54d022d33f96b3db85316f809fb2f4c. 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/USA2P2157363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb796d0a1f0833bd2f18df58a4ff915f820eca07874dd03cf2cab9429a2dac3cf. 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/FRX452102950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb915d9fd4de420626e0e06e66e050058922e77dc1ca576d16150076485f015. 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/QM6MZ2187770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ffd61eb7fe6c56f58443264695144d42cf65760a6bff18fadd576c348c193f. 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/USA2P2102852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c74d627f8335d6770f51efb710fe7dab4ad5debcaa9682773cf3ca9caf2d7e. 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/QM7282090778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7411daf88e1f97034a1d8dda79cd8aed1c8ab85437b701e55bc76edcb0935084. 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/TCAFA2095853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5231abfc16175f698ada355ee90909af621c8ea1eacdf5641eb4ba177833d29e. 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/UKXN22056395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b7ef21fadeea650dea0c71a59bbd67a314873b9cfe6663481748567d5ad8ab. 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/GBLFP2074949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c134337d5f954b79de6bf549d671c36b1d9dccead3b9d486a206f5dff4e44. 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/GBLFP2054396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff5d3daa7d9be67bb5053c3725c856246627e72166b65cdd2815322089fd237. 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/GBLFP2051228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106b7551c1641a210cc3b6507d659343052b78d1e3c5483a3d64ceb733927658. 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/GBLFP2006353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddce4d625304e266b634a411ec17dfd803bd80d3d29ae9541b7aa12f8b1594f. 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/GBLFP2016078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b35841115d19831b513ca08647e6836863397030fd780fe65ae8463ae794a1. 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/GBMA22088121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab44a7ebb29b6f9143704f9c887db0a49a3e335ab2481387f139ad5a30e5eb2. 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/SE6SA2086116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74737d4afaf4d7b04e4f203a58ee36ba3a137f735879d122a532b45b7ac17020. 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/UKXN21997404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971a97a573e41cef427f5b439ce84cedd60c7fa5976eef5bd42a4c4a17a02c1. 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/GX3Q92470022.