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 0xbd69cb45f0f3ff25818ccf61f1846e67ef6b58067370d6e98fde27807839a792. 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/a49d28ec-2de8-4f04-a416-5c1279aa4a79.json and https://artists.proofprofile.net/proofs/artist/a49d28ec-2de8-4f04-a416-5c1279aa4a79.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 0xe61417754ad0d339040554ef1800911f6a6f5b0c7968cb7701dc900ed042d1fa. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/TCAHI2389614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a9c3d378c07edf7b2d85b93994e462af0975b2af5a3906517763127efda2a7. 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/TCAHI2389617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02145c29ca631f51e7b062e4080d364fc5ac044a5e9ecd40f079ea345b57eddd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:03:50Z), 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/TCAHI2389619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa702975ed12223051a3f8019c434629dfe1c1cf2c6a212fd6adad890ed80b. 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/TCAHI2389622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e50120aa7af33a6773e1bf77065f1ad85ed0aeb139420de6809d9574e3ae066. 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/TCAHI2389626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0723ee1b58faff33855cd4c64d2864a2f33dd57996b101d351092ae4436b6b. 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/TCAHI2389641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee86a6c5cb40c86702ea5f37eea03283aea077b3aed6e40711457475bc8f2900. 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/TCAHI2389659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cbf09966c6fe248586abe3644a295db6723a9b5eed771e4cceebd94eb3fb35. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHI2389300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185bf33e3a60c2c353d65ffafe8091365bd55ab4ccabd50cf2a82c6439949aa9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAHI2389303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af8c52cf2ec3877fe281eeb9953957a3ea9a950913467795b971d969bfc85b2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHI2389306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088cab79334b42c631ae913b278c61f30cb5f1347affeac5463f35d3f1867ed6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAHI2389312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160a70c9c4f04c664747c051ed7f04baf0a56f3b656813fa05e37de6d8b52f70. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:01:32Z), 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/TCAHI2389321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835ae5f9682f1c0775052e6ac3a671cc7b8d59fe056487a41e28f3649bdb0621. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHI2389324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9bd94fa42cea4f7b9c23e702207ad90b3450ff87ac37adceac92f6aa79977f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAHI2389326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb4a3030b646abafcc3763761a5eb7716d59e2911230e8f28378f1588c2f8c5. 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/TCAHI2389327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1925df28bd4906970ac09bde0ee7e9a63fef7ce2278021d433aa309cf3f73fd2. 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/TCAHI2389330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdd1b474abf642bd689293a0e64ffbf425cb738a16817f5d4f94cf1aabd2da8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHI2389335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61bb89771515fec65ca70343469782171aef557446c6531833b9baaf7730d53. 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/TCAHJ2302278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d5a7706afba1e3152d9a23225f8de0f536fd4d132cfc8d4b1dd8469be7a7ef. 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/TCAHJ2302280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e304359f26d5c088d76a8f17571d3b776f61689f8b4f9ed1634edf901013314. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHJ2302283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164364832dd50e639c07c4b194c4fb57fc6ee964d0b3f8ae1760a9b620df964d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCAHJ2302284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5f949b22e23b1e34f10303a11931ee3721d8a6999d609480946f08cb8918e2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:07:35Z), 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/TCAHJ2302309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60383c0e305ca18bdd0fcf3914f451d603144776b6e3fad34181e010dd71501. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAHJ2302310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37e358175d28bceb57035c348d205c2cd125ea65a0bcf395f7ed1dd179acd1. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCAII2426520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86dbe85b83b935823967a35c41118417196c30071771b812d070a028dbeb79e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAII2426523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5ee142c437f8292db885eb6bb8ad515d8e31e4bce46fc1a8d24ec47c55653f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAIJ2426524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443f76f495afc1d450f96dfcb4f4877ec1ebfb9b5beaf389c086b407088656aa. 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/TCAII2426527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7352374e27552d635251235adc23bd8327264f2faf975c9573b3e3dd0b7736. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:05Z), 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/TCAII2426528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e94067b047f5c1a0edc508a6185dd4705f88a17562472be088f07de256985c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAII2426529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59acc1df310d2dbe142f1fbfb12256ee03957f09eb157e942ef30ef180dc9aca. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAII2426551.