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 0x5bf27d370bea81ec1c386522c81dca7e84ce2b5ffbbc04db852d078dea06c058. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e0a5e6f-a3f4-483b-8e48-74f330466d79.json and https://artists.proofprofile.net/proofs/artist/9e0a5e6f-a3f4-483b-8e48-74f330466d79.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 0xaf63892764d069cd80bc0e014ac93f7c5bc6be619fa3b731a03eace622b5902f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:34:25Z), 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/QZYHM2427739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58052d431404df9822ec9574a63861f5cc79ea859e58af2f544599bbed27f85. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:57Z), 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/QZYHM2427745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1666230b8c073ad34303b27e1814be9b5dd0afe31635cd7c1f2c60ef71cc363d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZYHM2427746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42814b3796bb9214b5c259daa13ecf37818a47040b1bf13cb5794b2594ffb2ce. 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/QZYHM2427747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d06faa31b0a4e25d662d65e0dd39cddc09278c797e23bea6b46c1c81374a27. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZYHM2427738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf63892764d069cd80bc0e014ac93f7c5bc6be619fa3b731a03eace622b5902f. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZYHM2427739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74c5923acf423493db9bbfa0a5751fca4cc8d6bceb1be98149b75bf990b8b68. 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/QZYHM2427740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb84e9bbb34b6445e77a1751a4a8228182addd0339b4c4c9749f4794b1d16a2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZYHM2427741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb199fa87d164d2684ad21479fb89fe314f2e9ea1078e0e8e62495c0b2597c4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZYHM2427742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe488b8b5f755d521e0e246b1cdf10f0f7cf9bd91fd52d7bd9230ecf6091e5c0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZYHM2427744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58052d431404df9822ec9574a63861f5cc79ea859e58af2f544599bbed27f85. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZYHM2427745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1666230b8c073ad34303b27e1814be9b5dd0afe31635cd7c1f2c60ef71cc363d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZYHM2427746.
Chapter 1: Secrets of Ancient Castle (Rain Sound)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7307b763749c89a316660c8d4ed2d17662c5c446499d66e7de56d6e5738c72c4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:07:16Z), 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/QZYHM2428775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1d7907c495797179c257c5cde65cb7492fc5a626079e5bfdc3fcee7bb89f66. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZYHM2428781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead4fda545a82fbf528c3d43fd89e668cb0f634d6ceb2f882416e06d4f8bc798. 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/QZYHM2500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c454d5a734e0380aecb22abf502af56cb36bb5f25cec9a0527a3c2ce41e6a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZYHM2500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75e1ba7ba69fcbf43619e49ab1bf5e3370b1585e8e387acb58a2eb2cd0ae1e9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZYHM2500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cbfb6e8f7f6c7d8ef95f905a039bd7f179233b3307a7464d888f49653d58e1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZYHM2500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0ceb19a7277a611cecde1df4d77be74de5f7ba70d52ef87b8b0dd048e3bf4a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:40:22Z), 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/QZYHM2500408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d35a27ec5f0a8434f51fac99be83a075fabd4d320afaa1017dec080459a726. 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/QZYHM2500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b42a306e758fbbba578ccf74eb89075cb10d4b53b07d0225d4bb7b311e56a8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZYHM2500411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9d23048654fd7bcde2bd84619dbe8b8e05bc1977c1bcd1a9a29a9ce50d8ed5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZYHM2500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa719d93172776ffcca7485458f75c07d6c24c53e04f2f16b551b1902c0b5793a. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZYHM2500415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce59f972856e0a25ca850a9a01f89e226c692ec9dcf2f927c269846d02ff1c5e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZYHM2500416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d062404a15f4f0f777e33dc840d5ddb3e3e4b491128c141b38ebefe2689f4f. 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/QZYHM2500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7335f2077a04aef99edebe3ab6d3cc9c084efa8bae273d89c0fe42ce3a8c6661. 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/QZYHM2500420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b91de11ed7f13df0322375bce5ed2a855d60ada2b716f8d814d3adaac04f9bf. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:14Z), 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/QZYHM2502358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176a89370ce938b21123c117ab1276dd2dee426168a27feea78e9c9afc64f13c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZYHM2502360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0262eb90dbbc6003311fec501e31097c7e62ab75d694cca42177f201c2b7658. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZYHM2502365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9087c4c58edaa8940d32915ca52d4a875df7b8c50ba60d94afae6fb26855f7d7. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZYHM2501805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dc083c0168143f9a0a24a6dab170c0cb2a71761a7f4a95dfa0bb14d33d911b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZYHM2501806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81061c254d4005886b777cd4ba7f6104248a7cb75cc1607fd39cfe2c72cdffd. 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/QZYHM2501807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe42bafcd21bd89dcc8e60649ba1bd34576adf0036489e06be64707a60e55d7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:20:28Z), 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/QZYHM2501810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9de6fb2898f72e48f1ef7ead734e3d065b59dbc6d2dc5332a2bb00515c7750. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZYHM2501811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2929339356d3c101d92133a3c5154688390f844723f8a4575e3c3742a5d11e7. 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/QZYHM2501812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc12f6721625cfb850a2b592bc57ecab03ee8bfc7f481df21384a60c16bb3aaa. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZYHM2501813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd547889dd5839390bdc016c8344c079909a6da9f36d44f8c508901516bd8f739. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZYHM2502537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55b3637dcebd7a495ff035aacdeb4e40be17503f86dd986fae2ab2ffbb3d6c. 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/QZYHM2502540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34cb63c4080f5c041b46968cf65854b3fe50ab19d6bc26cc0f8582ebf300358. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZYHM2502541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bc23f878f0b1384280dc6da85c8da156cb82c2074ce7e03827c3a1bb513a9d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZYHM2502542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b029720e2af7a565b6270095ae576d9c03a2726e0b684a1edc9055f29498a2. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZYHM2505847.