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 0xe5a2bbcce44c10492c9b5bd2848a9ebd9fd83fd667d279d93d267019cc0ad3ca. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86ce9117-2461-43de-a535-148a378e07e9.json and https://artists.proofprofile.net/proofs/artist/86ce9117-2461-43de-a535-148a378e07e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dangerhouse Complete Singles Collected 1977-1979
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 0xede5d60983cf38db7c799440e44ec670ace34140e28245c6ead3d43c705b5777. 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/USA6P1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c25910deb107c99b71b13fa208db80b351b85fcf6c009f7d3c0b25a46fb011. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA6P1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24920eff7958887c4e1403c878d220a83e00274088543e35ff402031ca1e33a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA6P1500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cdcb68b5d4e021f02dc86c64f67ca8d2ba586eae94b68bea229f720354b8a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA6P1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca2b0b896aae549a5e9121bedd380f478b843c726ed7f7e89091ae196244dc8. 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/USA6P1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28285af725e48b2ae5556c87139fdc997bafc1347859c6d26d685203d7ae37e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA6P1500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f2c4c14c2ec6c76984e75b5b1b8f83bef13c53bdae73bd1d26782ee0ad1b21. 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/USA6P1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd9736e15755f7c3c333a6f4c60bf0231fdcb9c499e5e196322ee34ee85918f. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/USA6P1500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24503de14a8a765710aed7c22485d0944928fba3fab1c70662ca0d20b89799c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA6P1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aade4a9f281807824e3854232aa38b3950adee31d43cb64fb85dac07a3c2e4. 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/USA6P1500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77411b4b63401f190d31a7185eacddd9ef691154412d252790873a05be3643ac. 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/USA6P1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf90b3fd6b19073c66a457cf3dbba473cef269e73d703b5329b0549c6ddf9d0e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA6P1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c3d8ca2ea7442085f7aca879d58e3daabbc5c5d44ea02dd88928616b091503. 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/USA6P1500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d0127748f70e9a943b6a89b216f9be1bc89bf3d7a4ed3737cfb6d7d724c083. 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/USA6P1500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1df0941b2aceb1de5615254582a62fc32507988a75bc55af337891ae657b0d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA6P1500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2987b0f912e348d72d3c168aaf30505c7f22583d00501149931c1a12e36dfc74. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA6P1500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26518a27291381a702b7460f484a4db6281a4a81569087fb1afd844c5ad1de0a. 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/USA6P1500040.
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 0x7305b638edc4fd2d9f56a9d4be3cf97d2e45643d307f1b6c7e3f72684c0aabec. 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/USA6P0499055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5960f77b9db1a6f0d2c8b7358701e95d397d8d0b89856e727c76c7b567d6c9c1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USA6P0499060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee67f9145d4f5ab0bf491eceeb3f2c39e3a489bf27f5b7dd4635dc4963aa2931. 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/USA6P0499063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510671b34f026687db4f5dbb3254997073b62ba57017c0c479857539eef6abcf. 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/USA6P0499064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e51d08f3e49937b3ab3069efd4dcf1cc523aa4e4baee30f93e7fac5993fc59. 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/USA6P0499065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fe1d481d002dc8929cd23f4b30687debca5eff523fffe3dac561efe3a21be6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USA6P0499066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1edee2452531b3b2c54520bb796422602fc04f0caa98589c98ba732fafab81. 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/USA6P1500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f0f8d5f08ebddf433cecb4054fc4698398dcb495c5b2c6348a4abbb491bcd1. 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/USA6P1500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dce57d608adcd253768ca844035da01d948def39049801257492ae6f2d9fce. 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/USA6P1500052.
Dangerhouse Volume 2: Give Me a Little Pain!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be54b877bdcc3b6a4600da4642ae386b5a9612dd65b652550cc163cd97565e3. 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/USA6P0405002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9d0b43bbca35e74c5835f4e3e049e87bfa8ce7a43f25ba10f93a6c2a86ccdb. 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/USA6P0405003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84477f6c4f610a6147405c12fcb539614a38a3956f1fe26a0db3295c92805c8c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA6P0405005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b24b40a3caaa066a1933a7bf44b465ae7f40a960ed8d648734fbdddc64af2d. 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/USA6P0405008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa193c9c7ab678b0aff547501d1968db6f6659609c53d9aa12722b5cabde8c77. 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/USA6P0405009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb44a6be6c60d75d2d7d9a492ec79f42dffefdc39181b0d16e2f826d66ca40a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA6P0405013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2433a1b3b36836ef22f3d80b0702c9d8262906912c009f8368e3e74e5d75497a. 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/QMBZ91731909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7110b22e7d1cd95363a09f0d4eb0255deabc19bce516b0558da2d082e380841d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7281713119.