A crossbreed is an organism with purebred parents of two different breeds, varieties, or populations. A domestic animal of unknown ancestry, where the breed status of only one parent or grandparent is
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 0xc3708529f8f792ec3efaf812d0a50f04b2744483c1d2c053008ec69d04c4c27c. 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/087260fb-a4e4-4c05-94c9-af04d415cc13.json and https://artists.proofprofile.net/proofs/artist/087260fb-a4e4-4c05-94c9-af04d415cc13.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 0xab8f210bd5cd05757d8484c9f41cd618271f77cfb32a537833d9d0b0d6040db4. 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/TCAGQ2255089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a15d58728f67e8e51132e04e51a969a062d7d5e2cdce76db85a6f1696ccc6e. 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/TCAGQ2255144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d34dfe5578450f5c52cf33b0e9e9c0a9688394eb791b78e1129a77056823ac. 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/TCAGQ2255186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dca618b11cc8ebdd3cdccf83b4947d50ae68a06a4b4384842dcc7532fa80028. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TCAGQ2255120.
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 0x67f0d1ba9cf555d77466776cabd50e8d1c732e182b6df5680bac77ee13b1c81f. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TCAGQ2255176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ff31ae6eca0bbc76045a6e93f49fcc47a49ec878eb235c8ab01fe4ce2ddedd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCAGQ2255200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e0e510876715a21c186b792cca5d6988913b972b16ee968fc4038528ae06ed. 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/TCAGQ2255257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ebff39807c7ca6b7b4631243e9f7bb756514ce1480a878a7c3903d2b28de1. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/TCAGQ2255264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82891b5cd1e83bddd4465c4a06394ea47e47dc6a464e20e06da2c7c4a06cbb55. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCAGQ2255274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2da2cf7b2a3200628e4b5d843ada392ee66089dc432cb226bc93291be11a32. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TCAGQ2255285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6928386a5c7605ecb3e14ff9d0756cacedf49b5603ab829f5806f01318be2c4a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCAGQ2255298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a36bf637db59cc4aa1037f639c2c0610dd17874637b036b03f3a15868139f74. 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/TCAFP2146641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb528721016f21772b0dbda179808693249257b20e14b7a7241c8c363d339932. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAFP2146686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0378147b324c25c4e7d384a290df8277461298475d598e30babf2891cbf1b66. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:22Z), 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/TCAFP2146619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa29153941339da4cbb58b84dbaeb9b35201dc8161feb2666f2faa9a5b2c500. 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/TCAFP2146624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02f099eb048508644f16705b76134c85de5d5e6d138ac051a15ba4bb06048f6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/TCAFP2146633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247bc4e7e02d8f0e882876dfd3058577e8557d1e678d314f49d81fac201b7efe. 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/TCAFP2146651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2c3c07205df3992bc6eb4b93b5945e01f68fd58626311a7640546bb44977f7. 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/TCAFP2146670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bc4b4ac125ca032bab671f5c9823a32d802b36f507d6708b4e4f6482bff8e9. 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/TCAFP2146298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dd65eaac6aad4ed12ed5f268178dabb564160e4701d08dad6fc0110777c688. 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/TCAFP2146400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a24c34a2a3e86e054bc391deec39f43b458e5c056cb545fc931ca63dad5a782. 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/TCAFP2146422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff05470c33ee479b2ba9fc2a6b2953e614f0ba1fc99c713bb70cc4cc4f72c05. 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/TCAFP2146429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e66a45e943ff07ab1f7a294aec467bc3b55a757bef1fc29c4c56a867630c2d. 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/TCAFP2146453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b354fae6d3f718a06acfe5e9bc871d4ed0912aa95a057f889d223eab7f2e0d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFP2146470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9b29037790ccbae1b3c2269677a224f0c70c72e41f9e4d7091a6252b4ebc88. 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/TCAFP2146480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9cc202eb0aa026fd49b7ed9be254d688a05c9d99b095c8d31d6a54fc1062b2. 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/TCAFP2146500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c3183152e9c123ee0f4b7648219b2157bd9b6d2db465cb83c8a835c524e288. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFP2146521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2ecef797a081c4c8d799de90dfea7ab6242f4982a5e405e046aa1860abfcc5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFP2146527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff33a3e2438339154d7afac3e628c3acb421bc270199012bc98c86638dffa67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFP2146543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57ba17ed9dd245220e433498038229564b305b65b009160fee1ce18e38c2664. 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/TCAFP2146549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff6fb1ffb22b3f56170de93239612523f3fc4a73986dd2c76eb679044f58a3b. 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/GX5MX2399788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2a31907cc6e23404b69bdd37351c6e601831c6a21c75ae95d051a9641e5192. 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/GX5MX2399387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc221b8bb41f1bc5e2dc3ab14ac679609bc9c1da0a0efacf672968082fb3ef8. 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/GX5MX2301605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123e303feea47998eae0fdf5ca95c9d9c4a78c5cd90bfd5f23154b9c8818e3d8. 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/GX5MX2375203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac891b0585583093db3622bb9645491cd211d8b4d96bd9409e85797c2686b64. 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/GX5MX2387989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17eb5449117245254bcac6d5b071acb7d23952f999655a1f80983acfebaf9a1c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GX5MX2396454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e85277c97300c2d0246f0c241f02796778aa7a424f4ee317d77e43b3c267f48. 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/GX5MX2393624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3438fdf67731126feb771c15edc3f9fc4a2b2b24f2be30b7cbf271aa969b07d9. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GX5MX2321954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f514621baccbb0cf9a4a0e0e5894c9b66bad84f9e2ee8b3d17fb02d0d7c62dd. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GX5MX2323392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f04a3b35d6b85a85e10a8ce5b1b9cc5a29086166e0b6ffc69a8f2a451f4607. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GX5MX2380551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2254e128f7f00236a955b1ed37158752aed713c239edd99b6513fdf112bd570. 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/TCAGQ2253748.