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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c490517b94388a303b3c7e0266c1d211c1f7bd9d6098e5fc8cabe44f96c3e7b. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b730678-8853-4dad-b972-853e682f6b02.json and https://artists.proofprofile.net/proofs/artist/0b730678-8853-4dad-b972-853e682f6b02.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367d04cfa1530302e5a16a5290f1b05e264df5e19a8e68163532e623da9b68c8. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USYBL1700444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ff3711c357590738565714f69d3942846f71120540743a1533601d2edf1cb5. 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/USYBL1700445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3609fb02831dd6223143e11cb0605d5ee9049b86c1b0951a6f68f4195bc216. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USYBL1700446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b25278035a4490553cbdceaa22bff848864e2bd80bff66b90b4f537d395b0a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USYBL1700447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfe1e6335857c14f387223e80a903a338c965d520df8097178c128d790c6b9e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USYBL1700448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1de644d9857e64079dd2a9d6dbf0e16c6b22039f62726d61df64f32f223560. 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/USYBL1700449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e73e281a009f6089dab5d053e22e99f0f39091822fb9f094efd5f9280be873. 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/USYBL1700450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7caa1e25dbcd66fe9eb9d7d150fc7fc3653efd29ab868ed8a1970eb0dc6cfb9. 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/USYBL1700451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19408f613efc634b8eac1b57022fadbc3f5a8bd8f00ecf9454430e6ab92f3c4. 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/USYBL1700452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcc7687957a7abdee628133c2919b55297597c64f05f3ce051c412e0b7ca456. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USYBL1700453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bd6d6bf90695381bfd9e9faf94872dcdca8209af20f1753d306d5890e5ab27. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLL562302305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6648cfdb2aee2da07b56e1d895a1a6f463af6660240c0e8d6b2819e012b526ca. 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/NLL562302306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2490a594e959334cf5584f76063fa885cb77590464c9a75a1b1f3f33d869057a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLL562302307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28eae65d29b2ac8f5431c3ce72edd9d3870e1b2d478178c22692ffe5e73d2fd. 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/NLL562302308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcd6c5947805fed848820d7549f1779dd12c0ccb4790ff328d38903a2d72260. 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/GBQLP1600753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c53da29f3c1a0be6a0cbcf35600553afcaa846faf32081fdc05b240d8418bc3. 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/GBQLP1600754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e7f5bba9fd9462d90af8682d3075196dbee6f38847593d632dc9893ae13c08. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/GBQLP1600755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244fb5ffd31c81716006ed3e0a7cb352c2dcaecb4e4b5ba752e4a2738bb29860. 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/DEG931691596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c11744ee227ea3c36ed28d14c85e06bda5c78baca23d17efef18b2bd49736f. 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/DEG931691597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92def482b179328fb1a20b3334e1d5c893e6d065b91bc0019c4be5fb1543df5b. 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/DEG931691598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd3fcb282f2b052b8cac9300b546f597ebe90cdd116d18f1c9410d1bd60e79b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEG931691599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8628fc5643b0b3d018ad0a2c704d974d1db3fff7149e0c4cef1fc93e0366004. 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/DEG931691600.
I Am Running All My Drum Machines At Once And Dancing - mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b18654b6d3208e47ca32525685d873c1c6fe97537ddbd19e80da7798e9be65. 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/DEG931691601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eaa0cf2fcb0cb21f91ec5761551d6f75b4de7346e2efd337c0040c41f08e1d. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/DEG931691602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed6415ad0c0a89cd88dc9a17ba9b262c0b4072ad5f550a283739f418916032. 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/DEG931691603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffebf5cecb0c7aaa95d0ca886bb7348f977b8e61fbd6d5f34cb677d133ca75e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEG931691604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9517ad898fa3f3f244a632a05c8455601f9f712c7da60c93128101a1456491. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEG931600884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18422b3f6d92ae99d053e5df996783619a9afc60469fa885bf00544737513095. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEG931691605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238887a22d06629c242c68386a147208cac96230ea3e76578f1eed110f16e811. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEG931691606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a280fbd1e9d99b283a2f88debd79cf7f0a249d4f61e370f03aed2dc5838bdf8. 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/DEG931691608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb158456ae65bef26c205d4fa575572a4c8db7a65e3b5119409f68dd941fba12a. 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/DEG931691609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084607330b1c326eda80e935a21355b0a8adf7d8cfebe9e000ae514b2d7aa294. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEG931691611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06da316867a7cd0dc2139ec1d5157d00f60e5adaf3cd627a8dbd7bf481d6b2c. 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/DEG931691612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e390715637f53c8760ea3d342e5773b5ba2f879b45ec8b955ca95971113c2f. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEG931691613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828f9123ac1e2d7fdff69782ecf24aac1d1f0e712c06d650a419a42d4e3dfbfc. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEG931691614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f977f5eb9b1f2d5acd90b8abf700821678055b770fd03f3fb59d39252efd269. 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/DEG931691615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeff8bd21e5809467e3e6ac40b6ec0469f8ffbd079ff855129d04e52b402fea. 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/DEG931691616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47925909403de526d8c5c4c21ab05b7427a5e1baf00b67d7354e5aaca65b89b2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEG931691617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f138821a32574d0d58f6f4fc9b0c50e43e9d980951779c7c9ae859ae0910118. 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/DEG931691618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb7ac0fe38b397e37debf1a536495354d2ccb20b53fc17860c077bbaf0fe95a. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USYBL1701826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e64b367b6e25d547a883162edd2cfcc5f60d9a99e2b269ca3ee96187a12fc70. 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/USYBL1701827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9adfbe4c149bbc611ae7667562d82073061d601c82d45a5342165cd06bc5727. 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/USYBL1701828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a0b2b262359a3979c558d5e88bdcc7593920360facf7752405e4be2d40ce6. 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/USYBL1701829.