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 0x2dd616e198a40a589c9fa779b1fa51e07dab845186df53fc78dba426052c030b. 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/cf045b96-c2c0-48e8-8a1a-4b94e224f4cd.json and https://artists.proofprofile.net/proofs/artist/cf045b96-c2c0-48e8-8a1a-4b94e224f4cd.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 0xd50df4debd820ce039a7a0d8cc5797979f7fd71f26044820e7256871895711a5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:18:41Z), 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/FRX872329932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f10151a701e6af30c4f315d5b598b15c33db2cedb99bfa496da11c22b7c1925. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:19:29Z), 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/TCAGG2217432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55afd820bd602267f65744c55b0e806d4c2b2867ef771a5e8d1690e92458e31f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:40:32Z), 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/TCAGG2240678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3d0ddcd210669ca4f389d74c8786d1aa0a25d21e196f7556196e35a2178a41. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAGG2267764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d71657c16568be5d367cadb92729742f96bc4fd669cb7809f4efa819545e0b5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAGJ2254909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cb524717ef5e0a9e58e12476c6fe19d1f51032f71b255671d424fb255aa6a2. 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/TCAGO2239670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff642bd7abbb6798bd732ede123f65e8e5780c2730c80f8bcafa64f45c606c. 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/TCAGP2224639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d44baee0410ecbe34b62eb69e46912703ce077e7274cabbd3a70d3530b99fe1. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAGS2219438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bd0b1f5a28335b988b3912d29e1e8555d53aae3229c5a71ca2b8e3c37f1775. 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/TCAGS2219466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27182a8914811d1fbcacfa462dc9553d677a52f46d0aacb6f2490d6a549cafd2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAGX2355109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65695c2f0a24b84b0304348e942135e8108fd10a4077b6a58dbfd3694ae1d5d9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAGX2355111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8631f5299986f58ae24f55e2bb5a4cdff23e55f50897982866d94ad7d6f20f6c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR96X2346012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6c8a580f2a83e43416220e72b0e870a8fced84f1d792c8451420ff290a1c2c. 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/FR96X2393136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c04460474773d2b2986ffaafc96518fdc46f2fce19e253bedab6eb2083f48ba. 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/FR96X2393137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dc01cb613caeaadf1b5101acc604d5ba5da87714861ecd6804988e21e9642e. 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/FR96X2393140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666982e90c54d92de19286dd28b3c1d56788518bfe7eb532b2819fbfd8eebd0f. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR96X2393142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd24f2cadf9b0035dcaefa4ffded2d3d49fb6b63f72bceed7ed0fec4933c8bc. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:46:47Z), 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/FR96X2393143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a46c357293276f0aa352d8cb6517d8c145b8305affeba48faf443beb236fbd4. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR96X2393146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccabc084ded3e8b6658de5d28c2c21e488b285b00e4881dfefcfc9a186179d66. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR96X2393147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4fcc30282ba8a30fb78ab2a85d6f11b6530d8ff04ea126f27e9b62eb867120. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:10:37Z), 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/FR96X2393148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f5f6879f8d20364eb70771ab4585a21c2006ccdcffc880e52865be442b36c7. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FR96X2393149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41814b1496743cd70d5964960d0a0f97943427b2c21b57353f4831d86aba70fc. 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/CBBN82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046bb449d93ff7c7730e9a39bbe920a198083c7a2519eecc9b8fd4cf4f22273e. 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/FRX872329922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a314b0c117005cc2c7a1f2b5d7f402e91ebbc590c320d0ff7b105e10b644930. 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/DGA062379937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e573d6d06eec1494a8614001953e50133ab3424ac6c698233dfd8b4047ddaf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA082379695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e5e98db141acb4effd857645718c005993f0a1d6e41155b40dba1a4d84b1c2. 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/FRX452442622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38857403922df35e1c5870a49c6cf96e10a4607fea9d18a49b793935e1465bc3. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/DGA0H2479850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c9edbafa4760ecab5a16e6177bfaeee564b9f35427245fd4d6c026c2ceede6. 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/FR10S2589277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f909b23a4e9eddd8f3a5c0d3fa749b02244b536caca62c4117ccf01ddfc38b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:17Z), 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/FRX282561551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92667acc638874255a667a5fb484352cf5d07a1ed417a429bb69737078744b6d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:18Z), 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/FRX872534279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed22b74b7797ecb03ce3787e19bd22f0924607ecb39b5912f0de18a0d05c83bd. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA062556089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168658c7d33a38ba9ce4fd0eb70db18efb73cab0ec00f9596f4525c6fa669d08. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DGA062583802.