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 0x793e17abc7deb38f5efe4d7865b96d5e3b7352e589ebc73e47354222c9980862. 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/adbb7371-dadd-4912-a2e2-8d8c1c4d0389.json and https://artists.proofprofile.net/proofs/artist/adbb7371-dadd-4912-a2e2-8d8c1c4d0389.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 0xab6115246ffb4eeaf6b5c51c8c817bbe73f35416e034b661e6660e5aff72a40b. 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/QZNJY2408803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27230abc8f08733b182e2b9d2de634be9eec6facfb2f6527ae34b633b70a295f. 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/QZNJX2483990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed0ae75bb5444d5cec3c94d75c2d2ed55a3e7720d6daea80429dbbe1fc3e876. 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/BRTRB2402689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8e4f0167d54cfa4aa362251b87566f7b51fd7c5aac7dad99c8570880e5b2c7. 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/BRTRB2402495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ac729e07b78c3ed3dc54abb875b48ee8e60f5bd9d421d4d84b4182c6a8c63c. 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/BRTRB2401887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b27e452f2560cd55884c32d17e8a289bc5feb52cf7d1e93100b1a3645d5854. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZW9L2332201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97af7f4564316813556118ab2c763f5125f07275bb242cdd3d7c6b9e2750fcb5. 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/QZW9K2389056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156d896bb8c1df6dfa24822a17394b572343406dfa72a69bdc75d7a4a99503f2. 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/BX4IU2354653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90330bdaf2c2505afb4e190d3994058f258e320dbdc550a9cf3d7e6b9ba3b331. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRTRB2306084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3384e5cf2ddc7324840fb70d1c0b4dff46ccc2212e7213e5062366b01c6268d4. 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/BX4IU2347278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258110dfd1b0d5f0affb70c25682491ebd2a183ed2fc5c7944ae1331bb3c6771. 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/QZNJZ2326144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa4b67f826956ddc24717cb62df68bb5eab1e0ce05b2b0fb5f67eb87066917c. 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/QZNJY2372768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1dfed6e1aea4e2eaa305dab168ac45e35d979b7fcb3d35c5e8056c3e9af8b. 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/BC3PG2303973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b5378976099668ba6b6f428f7c1eafa87cd1d4c05b1859831e74542c758e3f. 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/BRTRB2203115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b6492241d4a372269c3c5893a17903f24bd73056e7649806ab6676c38394b3. 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/QMANG2222825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8622f0993ecf02db9ae2498de2d21873c52b0c7ee1a7191220a2f9a589f24276. 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/USANG2226845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f9bdeb6f8d49d95972a59c8143a14080df1b832df81caf2ca392a249b9ce82. 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/QM3DF2175031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27336ad053443f8610f938773bb1484faa81a8ead5e58a77b2f1c76e856b5548. 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/QM3DF2168811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef13d03be394eed2b43b2bfc839e9d12121cba9ee84f3b3a02641ccfcd0216d. 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/QM3DF2168803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85c9b112032a7e5fa43ad6a6db108da229201efaa5a975cc389aac8bb73339c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM3DF2168473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878cb067f258bc13ba8581d025f47ded91336e07a72fb4f76feb3c64dd574db6. 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/BRTRB2408004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b399e490236de0a01d2698a04a8a8e11091da340ffbb06ce383b110485e80. 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/QZHN42545190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2e8d6ff838c4e1510f3ff16fb561c7d1bdc7d0668751a956a7f87a967738b4. 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/QZES82549881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f59a7abbefaa3738532cda96c262ea2676538eb8eb735dbb7ba75ff3205da8. 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/QZES72582541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3532c181e85ec72a305410e3e13906757ee21b8a6119224c3c399ec7ef8979bb. 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/BRTRB2500497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a900ec34529c514c22f4947e12790022e089bef39a95a9699e85aaa9206c07. 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/BRTRB2408523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f65ac23820a008294d9bc604fb4ac6b08860344c530f0a2b1ea19b95e3c82d6. 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/BRTRB2408515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550ad7541572c3153e6cc16c4b91463a36d4caa6f688025c12b6575f4d5e9523. 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/QZZ7T2418266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797732242a18aab6cee126ade762eb7945bafba7844309aec0d485d9ec5359be. 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/QZZ7Q2466688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1ebfa42f916b60f9c08ad2bedf8642f799f8e92d616bb820c1e9567b8a6cb2. 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/QZZ7Q2412282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb000bde9c766b02251ea10fd6c2481a4f8112b70f8e1d67195ea4aa13065ef58. 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/QZWFS2478465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089c64675745a98d5aa73d6e5a7f82d51869e4c60da549af0d093186c00da100. 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/QZWFR2492708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e542e3600deec83cace993b359176f0658d55e2cda075b13cfd933c9da95d6. 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/QZTB52487702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f10e5d499aec941f663d2f0b502c7242075dc8ad54ba20321da6d80411521af. 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/QZTB32495403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5f2e869f0062aec0e1832d7c4ed9235273fb85d9220fd1c61ae3b8bf50daca. 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/QZNWZ2428229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fe0f666045eee36b90165ccb55f68040aa9b82b7f684818c0a8ebc9c0892f2. 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/QZRP52458676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd6b708611e0130273c94134d27fe75c0b889ac86d82b4b88a5abbe27a59ea7. 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/QZNWV2463819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61cd851ea99dd3e2edd4ebc986f465731254b9590392c37d38836e38acb90f4. 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/QZNWV2439658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb3c67369b44d5e0cb549e5d58e200d9965b52c008b8f1fb19f77b7d6a7b39b. 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/QZNWV2439668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c83e69fe7a473abd1df590d4d717ba4015757bc328caaed2569ac432daffcab. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNWV2439650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adb2819f557dd47c2adbe7ad7d3492e8ca3e206c67a5ccd3c3824e4ee8a2ee7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZW9L2344458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90330bdaf2c2505afb4e190d3994058f258e320dbdc550a9cf3d7e6b9ba3b331. 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/BRTRB2306084.