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 0xd8fcc14d5741ed7626f0c57b76ba1c9ecd867a896d89d6cd6c43e8d1a69d69f1. 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/b2d10bd6-f54b-4fc8-8a78-b06514e5ab32.json and https://artists.proofprofile.net/proofs/artist/b2d10bd6-f54b-4fc8-8a78-b06514e5ab32.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 0x65f3d8415d7a5ab7ab694f211d5fce86bba48e8965535d3d09205a00d9dc5520. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2321199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c3708b08761d5c4cfb38dc649d1a6980cd5af9375d0c13ebd72d411528553b. 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/SE5IB2333715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabee40974ed37013d2236cac50118c47f1f1be93b9f82aed84baab35ff7af40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB1900944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1178bd785fc5e95336ca2def74332da6c7fcf9a5ebb3b1a7e57523b83d920287. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB2342435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca55552d5018497799bd35f8183be128797ba99b1141d3543297c12d6849bb9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2322351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceeecf374f052d960e64e1bc3419fd4531370761fba323c2ffa5a450db6c503. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2313803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7085cc8e78df555f13bacee84c473ad6c5c17a744e3443b9dd4de4c9cd34b9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2309260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126e84320c579f612df5c00646d523f28255ebad5964c206559fc45d5828c65b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2316223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556eddd73b6f2569270ebba53dd7626c6833d8c03af9cd5ce4cb11934d873c92. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2268865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c517be910a1f3c4782562592cd0470b407dd22df9a1272d3f091d6fe98ed8. 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/SE5IB2328483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb5926474d51d43f83177500c159e22bcd18fbb389f02283a0a68b670035f74. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2313799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c5b2f300da3a7b759ace4c6bc23b3d61d3f2a5c587e65ab99464bd3843e4b4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2309287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea49dd99f8470f3fcb72c586224663afddd1f375504c1ea915a2d9dc3a9b0ac3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2326383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd169299d3fbc90068e5e412271a84e8d8530746ad44f39d067452bf10bbeee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2264529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058d9eb700e27e9a58ed405a9bda5c0f37a81a820447f74dcf072a0be0404ed3. 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/SE5IB2279921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9339d0148c0ceb24cb03224a465f3186bdf90ff26a150c4053496f5481b80203. 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/SE5IB2342419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56c75fdb0706b1fdd3a21f232c09f3f7a7b0c2527b6b4a49de1b03e424ab331. 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/SE69Z2404288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f75c611b2c71eacc6461c417a7e70a2cb7e1b4ad82b493823c252b1d9bfcceb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2343707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb6f15a156a7d959d8fb1f8fb2a07600127e78a5dd3c12dcaac8a5def0d9e7d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2312267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d99628192fdf1d922a4afa95821749d034ae745b44ef5eae3abe675ea013d6. 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/SE5IB2327959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c72f812f0cc867065ca33e241fb49f5727a882bf531e0ef42ffc45818b27a. 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/SE69Z2414416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76462ad17e2bfc8e8b7878d55fc39d86d95b156dc36affbce7510b8693d695f7. 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/SE5IB2345499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556eddd73b6f2569270ebba53dd7626c6833d8c03af9cd5ce4cb11934d873c92. 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/SE5IB2268865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51f873e3bf49690da578b37ce1fff33c0efafbeb5fc4fae570de2530e7bd4c9. 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/SE5IB2201553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f7bcf03aab985c45fbe628eac64b8f0252faf9d647ee55c768b3a773ea69b0. 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/SE5IB2142049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96107597d31a71ef590f655bb2df54733c14ae702c9b11b89cd7e73c74b7152. 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/SE5IB2117677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8803631fecd1e2e3f5a7349e219c0c18161a55722f9321bb291b0e00df4d2955. 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/SE5IB2106184.