1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xdc6de9852b57527dbe65d30f0a3243f025e2bd809a798ff4ad172b4e37393d01. 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/f2c6a9d9-55a3-4eb7-827e-d9f6fc43f0e8.json and https://artists.proofprofile.net/proofs/artist/f2c6a9d9-55a3-4eb7-827e-d9f6fc43f0e8.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 → block OTSBitcoinBlock must exist at that height 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 0x0f4b7f611ff0e334e32008752dc1bf1032964af10e46c2aa3a8a9b39aced05da. 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/USQ772300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c02fe989659fb6bb37c312807ebdf4199432197c1887fe1e5da7e2318bde9d. 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/USQ772300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0438deddad158808cb328fdac0ae3603177e94fa838d2834e8477fd1319be235. 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/USQ772300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5096472a09a7f68e26c257c06f60a40434334de999b526452ce9aa1ba7e06541. 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/USQ772300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a58be06f4819733cb46961365ff800593a2adb730f422b4d13f8ef68294ca. 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/USQ772300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901e1a6f722d3cf801d368639d23c5e0ae6dd5b96dcf0fc04f78affdbef6388f. 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/USQ772300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f184b3040c76ae41b987497a3079f1281ce99b451109dd88694deeaba6de66. 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/USQ772300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4653d6545c05ffcf10716b9b9c269b73bd9898b353c4b445d741dde88a059bf7. 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/USQ772300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596c122244e58300f0bf6bd3e45c6f92dd60f7dc8e8a2f1d8064d8a418e6f2c2. 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/USQ772300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6de13d8331372bf785cb8adb129c1c4a620fb877fadd2f1543191fd9087bb4. 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/USQ772300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989659b2d07b17a16afcbe7052f6599c46d97c99c5e3f44a0d393d292c70aadf. 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/USQ772300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edfa28704a19ece61ccb42d9c54ce6dc23cb7b260170e9391fa6b154b1c3d28. 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/USQ772300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8500422ae8df94027b7dd317b25d48631b44fab77eb7c911e598dab6c1999f. 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/USQ772300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2799430ed72b3d8128a15abfc000e0e1e90af68334f6e8e03b48744ad1a77ccc. 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/USQ772300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b33e94f10b2811d46167969072ee99d5a5642b2db5680ab877bcb2669379cb. 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/USQ772300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98df96963fda921f2a5aace837eec8b16600ae53d3259c41dfc07907e5a29df. 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/USQ772300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf387220b57fe16d67d13763808ff03d47eb9711fd8c2ed224c14492f19343e. 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/USQ772300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dde58e662026e99612db064634767c090e2abdea703b29093149ad4082b48f. 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/USQ772300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d3a6b376ba69aa1bb0d4173d1f1bccbdf21ae44a75696adb4870c3c3328246. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USQ772300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb73283691b500ce8313a47c8465b932062f84d223f6d173a1462aa9c0e452. 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/USQ772300031.