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 0xe599f13d05e1c25aec9a2a287a0bdd479e4565fd8193e167aea83613fa0f85ff. 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/865add7c-483f-403c-be56-dea840065f12.json and https://artists.proofprofile.net/proofs/artist/865add7c-483f-403c-be56-dea840065f12.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 0x020ef5122d0df1085d406fbce0c59d132b00a77666a612ba7851598894e7c3c7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARQIW2416185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5fa7d6c038fa16126b94a1bd65fcc1e78c9a5fe4b0a7ed458294b43c597c30. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:11:15Z), 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/ARQIW2416430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3960823d1b7596aa3fc6b3fe12c744235f9935dd733ec2de45fc5dc5ca9d90e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ARQIW2416432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca08b584b7ecdda8103727174a6c0f0797e9834a9fd3213c40201740b14f349. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARQIW2416433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e85322a6b15ea895e8a4bbfdc6c2e8a80da0e5bc4044990f64df9e652d19ad. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAIQ2438235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116d54b5c10fa020c37a509908f682398a56a0cf6cc08fa254a6c1ec6338180a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:39Z), 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/TCAIQ2438249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485a06b941b1e39eaf9a0f729f52c651f20d61d5518c8be18d8a9d00e743eb42. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIQ2438254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd410785174781bab6abce4d1721d7fb5a9c4ce557da9afa33a1c8376f7faff50. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZPEW2593179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96877db25194b292f6f2b28326760ed6ee1dbc385f8d48bd803be78a8d7bd210. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZPEW2593180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e55e38f04e92d88a3e66b558e2ebe4ca9a9cedf86a626127c1c1b1e02c8c4a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZPEW2593181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5983a4488fe15227ed86effbd1b071c54e716867c5e8ba22591af5eeb959b9ac. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPEW2593184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d2a988749666645e0ff552fbfd7cca516b4f19b9e73dd0ef7ea9710e04fccf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARQIW2416434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32114ce300a2ae1a831e2b6a945e642ac1987b21a58c5b0a453dd55127d8ad37. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ARQIW2416435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca08b584b7ecdda8103727174a6c0f0797e9834a9fd3213c40201740b14f349. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARQIW2416433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010980144b2005b48073a397e2f87b858b1b04ee3bbc3b0a19694d26b561397a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARQIW2416431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5fa7d6c038fa16126b94a1bd65fcc1e78c9a5fe4b0a7ed458294b43c597c30. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARQIW2416430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1184be692191c59ba4b60e39321c9eaf34b157092fdff94184b43897ee969b00. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ARQIW2416429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1657a3d0599d65e74dad04a9b98f3d61ae101e0ec5409752a417a59be1a287db. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARQIW2416186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020ef5122d0df1085d406fbce0c59d132b00a77666a612ba7851598894e7c3c7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARQIW2416185.