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 0xcd67f3a1912a4b6107246d14158f7ece0be37b8a8d3c3d7bb9a8828754d231f6. 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/b09e0b9d-cd90-4b8d-a8d5-7e8988d226ef.json and https://artists.proofprofile.net/proofs/artist/b09e0b9d-cd90-4b8d-a8d5-7e8988d226ef.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 0xd2280617852cc493f03a6033a64b56f37cb1c91d537fd919354ace27fd65a844. 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/GB2LD1800882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74011163dfb630c6eac6c2a09050a6e51cd5abda64993c6217f19bb24272123e. 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/GX3HH2468159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a438ef9d5410546aae3952b2d6d2e830e8694a953580de2f82df1b6ed5579b3. 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/QM6MZ2482399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc46d253f42a8f16c09a422d69ec2177d740e0191cd014616d60fad4dfecfef3. 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/QM4TX2457233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14924c0917d23de37585efc5e7439c0a5af0aaf44832b20e71f9f9dfffd894e. 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/GB2LD2320352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e387146fbd2e4f4b3b46be959d46ee446b63242db1e0eee5aa9e445725af8f. 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/GB2LD2210258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd549ae89bf5e014018863d07907b6b0aa0449625e13be076eae1afca2b4fae73. 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/GB2LD2110287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f28996ce7ecc6d65b688fa1596f525a1f3d8b3288d4ca444a1e69b84bb964. 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/GB2LD2010290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41978bf9f42e6d923afaa7fb1463807287f372f0c7aeefa6c31db6d8d152ace. 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/GB2LD1900329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234211d3b7decd58f12fd6772ddc34aa270c05e418987436f9c4a5d0da43cbee. 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/GB2LD1900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed1c173218cd3078d0cf9b87f69b9ea4eb4749f42bba2b9f6bcbcc4ace32fa. 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/USA2P1831295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14ffa08caf634ebe4fff2c8a74f66e9628caa9aaba13d93df0fce3695bc1ee. 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/GB2LD1700381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a7233ebce3c94d034461a24e2a4c9c4a9f23ce7e5cb270fdb091581b28cb5. 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/GB2LD1700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cabba6a320e7ae61aee67aeef51e266ff35624604d418580ce64dd608e41d66. 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/GB2LD1700249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4443417a0c89d47f5ee03c7eb5dbb0c2a7aef8a34988f8fb67bf0037ab90ebf. 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/GB2LD2410490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234695cf1badcd1c9766256f0fd49a21d282418bae1332869ae774a37f96372c. 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/GB2LD2410491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14ffa08caf634ebe4fff2c8a74f66e9628caa9aaba13d93df0fce3695bc1ee. 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/GB2LD1700381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14ffa08caf634ebe4fff2c8a74f66e9628caa9aaba13d93df0fce3695bc1ee. 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/GB2LD1700381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cabba6a320e7ae61aee67aeef51e266ff35624604d418580ce64dd608e41d66. 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/GB2LD1700249.