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 0x2911faba3ae535c184185fda72d0bf3d98718b2254f66426889a58c25fbcba38. 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/648715b6-9ff1-4a22-b64b-d409587ec26c.json and https://artists.proofprofile.net/proofs/artist/648715b6-9ff1-4a22-b64b-d409587ec26c.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 0xa91b8c6f9b70025bc2388cbb74fc4f7fb87976eeea8a6b991bfdf18f8a249d41. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMJYX1333403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3578c6037d2af4fcf5c77e6a0ada418f1fe8177105ecf905581120ad26417d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMJYX1333405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d57c6869bbe7617432c8c5e3220f1aed0f30c79b68459a2c81e8362a214c20. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMJYX1333413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67be9492b35f9f6cc0197eb0589f3eab381b2094def2234d553888167cce46cf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMJYX1333415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5379c904841e9f245f52706a4c3e6f17efa4e501720cdbc8e317ced5bce5e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMJYX1333418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a3efb85743ab5a0c69e97e41229acf0e462890c628c8a53cde8a1167915b06. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMJYX1333419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917e0239dd8343e1068f8d6b769c597a28ec3a82c58f0fd1f761ec4b6fa19f61. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMJYX1333423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dd27f3b5917964c4f0cd02cee945bf17a70e204ade17e1b20786f61e243a80. 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/QMJYX1333427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff345c2be4c2a61ebbf08e2c046dd916967e08699a240869c6f7861d5cf60ea. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMJYX1333428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a43dc89ec08d21dae78be2ab55c5daac8842068dc558ef6c5e45e53a62e60. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMJYX1333430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971a985d77e730ae81e645486beef6008d87d28788167f75ed771cb6d7d923d8. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMJYX1333431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70387696fe00f02a3c29f0bef6f6bad662e551338a09bab2a90f5d9333d560b1. 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/US85P1421301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176e3a578c0337dacf8ef7e5d5a798430f00fdc824bf4f1aac79dc44e81a872b. 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/US85P1421303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c6bea6811beaa0878edd0f4762247ec0210a981c4100693e9b4fbf281f75e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US85P1421306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ca8ab59bb1aa46bf1cd81b7ed005f4ebae9158241ffb727e925a183d255133. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US85P1421308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a74222ac8ea70a8c6524f4697ce54efca78c0abf1c12a5ccf99de0d2c1b26d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US85P1421309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abc41a965d8617666cb90989a66408e23fc4ca42381fa95735219a995696b2e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US85P1421312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825bc8fdc0539772faf205d62fa5362c201afc55175d2c11f5b0e81721dbaf40. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US85P1421313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9b87548aa753d31b63c960e82d3088cb79fd554c11121cb5a779519de914c4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US85P1421316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4212dc5891419c6961a8776a7fd9a7548df84712adac3d738b9b611b666aa92. 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/US85P1421317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6916d21d0a2262a31f621619bf6f71ca985d9bc0b8b59c3a5851d6a17d1893f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMJYX2184002.