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 0x5ceb5450e73572f29d1c301a8aefe9e317b7948ad9c30b54e8f1e27dfd0e85a1. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59b34985-4a5a-40e9-b17f-c169a7e0fb48.json and https://artists.proofprofile.net/proofs/artist/59b34985-4a5a-40e9-b17f-c169a7e0fb48.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 0x77b3f4c1cdf23eead1ec87b0e2e7037ca05fc80fbdec99e678a0b4a3e98a4c88. 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/QM42K2402708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e2793e1721b0eb3d37720fac6ab7baa0c6e36ba96803c865ee5b63b6e25f61. 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/QZS662246454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230343d16879e1a9aeee1d39bce700a34adef12c00db6e5a4ac98c41a3e6d1d2. 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/QZMHN2323275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d2c8647c213753bf56639783853b6139fef1445cf77a9a14c20cac8d0698a9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZS652232917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dc26edace975f7ed16ac76843bb2f276e68dbb35f7fc3f7b1950baab3b4aec. 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/QZS652325961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14778be877369b9d5379d1ded7b73e24e8d18b3890fa63bf128b4a28a2772b79. 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/QZMHP2437806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc962000530e8f862fa712e0c26c0f9b3de034bdec60ac015bdef2535713512ca. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMHK2396424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e9a06bffc126a101acadf520e1fcc2c4173300098ace7f77f12c195631741. 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/QZMHL2391332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483664bafbd7ef86f3734eeab6d38cd98c657f3dbb1866b761210b8dc8842c41. 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/QZS642315631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5041ae5d0b8c9eb38e58ef69c9043e3382d1e124da708d79da4695bcf94aac. 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/QM42K2370846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64474e2bc3804b09c2e631f134d67e2b37d3c2675618f0f5b4bd62b234dc94a8. 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/QZS632398494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608e46fd119019ace58d25aff1191fbc8994086875b6a2496fe01c5d8f374b7e. 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/QT3EZ2449166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909b3494484343c13471a59bde29136a1c3020f323579da31ba4ad4756859150. 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/QT3EZ2449167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e81e15837ee508b6de5fb7dae3747728ba9830b0565e29a954a9f03e2fd09f. 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/QT3EZ2449168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3461b356c46bfa6304ff788ef7018a4123e2d6313f990ff0032227d4ba5695. 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/QT3EZ2449169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc50156269ce7fd3b6174161f18d7e102c47150e11c89a718d9a897e9ccb5c68. 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/QT3EZ2449170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8545071bb88009dc4f2419d2d0956b6bfe600d51ebae7bda0d93aaa352643c. 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/QT3EZ2449171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce9654a8e4bfe9689621fcc533b7b36611a1c00e5fd43e50faf58eb0e3c5b7e. 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/QT3EZ2449172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041f330e02bd1d1d94161f67812089f64402d999262a3fe12231da31b5f4bcdc. 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/QT3EZ2449173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2256060cc0dccfe85838b0abd3ed166f046391fc8c580f8cfdc9a8bb7da6583b. 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/QT3EZ2449174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0015acd490da7f53c17d3dd129658ce20124809524a117472d20e790dbecaa1c. 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/QT3EZ2449175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea33a264cd941950f39872a7ed3e013e70e32b10a15a76d7a5935ea1ec46f2b. 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/QT3EZ2449176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc7a3c6a2854ff6778d633b7aa023cc4ae9bdd72796b1b2bcd5a67cd2b1591f. 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/QZHN72186730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b510529d568d74eeed4722cc317cafb5a6713317ca3bb238346e5d82aa1df66. 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/QZES92120083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2197edeae8d28d09d8c536d6269f27a5867f5e4b0845e946a1f218d1092f8503. 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/QZMHP2354705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f474ac11613452afc4d2c8ed00636dc5b3d459023d9a29ab7340f75c36c8303. 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/QZS652118096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7cfac0010135b5865898eef2f2a7028a34359d0d9cbb0b274c2914d5d762ab. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNRS2001667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495e0f44a1aa3ba456140ef4600ff613fdefc6a21d5860eb0b03f8f8f011f48f. 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/CACWV2290784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4195a186df134851c1f378b73a2fbe105b062244b77690181de2dcf679ed0728. 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/QZHPJ2293779.