1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe682213cce1695e3287760695d25211c39f543cc696e0a8c9016b4a7671b06e7. 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/8aff2575-5a18-4c86-ab41-d95f27d56102.json and https://artists.proofprofile.net/proofs/artist/8aff2575-5a18-4c86-ab41-d95f27d56102.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 → block OTSBitcoinBlock must exist at that height 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 0x52ce610b5d59b9460cbcc0f33944f3be9cb736cffd2e423472c682b111812ef4. 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/TCAEJ1967506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec8a914d099a266fbf9b9a03d6bd01e882f6f0f14683b0c7ff93909f275574c. 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/TCAEJ1967519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e445bf9911b01b668d9e3555499267f47fbeca1115bc103829624ce9c0ab98c. 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/TCAEJ1967525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d1d388cfc40e481cac5b7cc503078fdf23fac45a101d3602402f38d83886ed. 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/TCAEJ1967526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4561f9f152231f408e96bb0ee9d3e63d2483f518bc6e285870d662b7cd37e96a. 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/TCAEJ1967533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39b71497f62c3b5b36941c26b54415416a89401376fe07dd5bca12e6c1205c2. 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/TCAGE2201132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44ede89b37e49816782b9951474ff9823616b6ea9f81db2e0d7b41d7a1ed7e2. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCAGE2201278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b03b79592e52461b4033583f7b96fac1aed9efebe12784e8c96df80021edc89. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN82368403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815fd69702aedffd129b2cd2f759b5e5a76092744c51024b4cf4c9d679937ce7. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZHN72399643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658fd0c3b8afe448bc013905be63e06dbdb9ea7e250505704cc66d5c6795627f. 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/QZHN72399647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ffbed76f26cbd51b099a266d0e138b81e4b16d20c276fa388f5dbf6bba0529. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:09Z), 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/QZK6M2477220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b9848582648b2c5d3b83ac8ca02382df9f2d130e6be38334d6bf8829c48c6. 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/QZK6M2477221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920c065748f3d5e8d43c7475cae60f00be75a1cb4347257060c84516da30ea60. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZK6M2477222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9147740a47d970ea5a21d4c313575d3ca61f8286c4d6afefea3039078d8145cb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:01Z), 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/QZK6M2477225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb42d093b33befe1768e6671d5c255c98079c54100bb254e1f4b9b4e0368ac. 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/TCAIZ2456158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6861fd0aa8df812150f2cfa3625f478e741f59ca89b00240257e78b3202a653. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAIZ2456162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98612a344fc5d5b5d7bb65e40e6c85990875277527329468c1cc7840842093f7. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAIZ2456180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950a7c4d682d8b80f0b1499be086ebd8eed3af022656a1c961b5c0204cb95c34. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCAIZ2456201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26284ce93471f3cf45b32efb49174e3214ddaf4f7cb195e46162ff9e955ea3c6. 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/TCAIZ2456208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe8b04e7407a3bb4a08a8ad07877af94991ae835ad3cd95a4fdb370eba70624. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:30:17Z), 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/TCAIZ2456214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560591dfb619f77dfac0ed478d21272e68a42c09ea425b68a021a71e03714cd6. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAIZ2456220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111630567c3600151183ed4b097848c1f227de6f03af0fed07a2a469ff582a8e. 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/TCAIZ2456239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb154ce898558b32536ac24715d7e127795302ad87669dbc73e56067f4c3297fa. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAIZ2456258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d1b2fbc7262a0e5a6b58948c1de91cf70e7275ea1a5b6231c9344bf97ffdca. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAJA2456264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb200f0e0ef6a988896bcad11c1e8ccec58d06779cdeb319f8637735ac88c3ada. 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/TCAIZ2456277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496261e213763a4ab5081db618936e361a7c0109100f38dbedcfca004de46635. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJA2456291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120230c66007c269773aecfbe7409f623ff41b2e3a9226fe901ae34732c56749. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAJA2456297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20a380a20191d7330f7e36830b107b971c1dec96b406490bf9db420f0e22219. 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/TCAIZ2456329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba55582229c8f119b4cee35ab82968d0eba8497b4e9d78c8cabcf31d8bb12d7. 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/FR59R2477219.