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 0x053d22af0632ac65da4f0b228ddef3d960c5bcc57623eb125c458bbf186b6210. 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/9c434902-8b28-43f4-9211-9f7e86f52f74.json and https://artists.proofprofile.net/proofs/artist/9c434902-8b28-43f4-9211-9f7e86f52f74.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 0xdd3eb6b824c23b6459d65e6110ce6a232b90458eeddd0689918d129401f2d1ae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIQ2481809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc7aa9ae057aa995a671ba4d90b355a2d2d13bc6c80dc92b03b77c986c51d19. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIR2481814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9ec80020b69be290e687e7a4db8e7f9aa2b3d818179f70b8a1fc99a829f8ad. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAIQ2481822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003eb5cc7ee97e7d3fdb024dfafa02f317a798821e933560624019a54d8ab5d8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIR2481832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bb574828c05b0aa85ae5e3d6d37b9918992663834b9ea5b739e4b4c727a5c8. 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/TCAIR2481836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c1300c11c81a815a8697b9543457f5f038a9cbdab2231dc39a1ac35265eaa4. 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/TCAIR2481842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591987010645ee495ce1a2af50200d60fcf93d4e640d19184a61b142009ce174. 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/TCAIQ2481847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9737efef374839af826d31379c0acdaeaf575e38d747e29389aaba3137433b50. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAJD2409466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b78792221ff68fd67c956811394753df369947b468a6a6c80aa1c65578db47. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJD2409471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3813f5c439c51697a38f86352aaf0ed4d719b2f8a0431a34ffa0f3d07cb2de4. 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/TCAJD2409476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebe09b51a5363f8ad3fc63dfc468fb99da437cb226a04b749dbddba2c2c3f22. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJD2409480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8561f94a2946d1dab26175acfab77fecd204daee38b557f717181da76e79e5db. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAJD2409486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8465a3a3dc2ea259623d83a72ca5b470c0e824e01fbbf3ba3a28688bdec68c00. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJE2409491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7dd74287be5c4e6e4a229ab36c2ea2f15e3724b9c82b443a00968592364097. 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/TCAJD2409504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df1f9d5a0af0c8ae1bc1f8736ae9c0d113043ff180f166d694f4abf93adf096. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJD2409509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d8a3c5fc8956a2bfe7fffcb5903935bdd507175f0324e2299c20846bcf4d3c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJD2438821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcafdb39bc29fb3dce68688255e3a78482d5d2f832ba766c64821efc520c70e5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJD2438823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73182df377891c370bbc83f3c9d7587211faad337e84982d32ee6cfbb2cb88b2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJD2438825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6067908946ea98c8a8b7fd7d66fef30af4a3bbab7077ecec9594ccef00c73b8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:37Z), 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/TCAJD2438831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc746dfcfdef6a7bb2c571c9e32e789d268054cd01b65f9e45b8ba5bc2437910. 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/TCAJF2438836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0692d510582d29593941a8532e71bb533a465e52716e4153e3f68dc35855eb. 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/TCAJE2438847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f342be1017b1d9f7710209b9a31c24adaeac43a0b01140ff04bcc963c1da356. 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/TCAJD2438851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71b8f35ba4940ba20a3924f6e04eccc7a6d804f67090ae46d0ad2ce1a1bad63. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJE2438857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661213ed7715e911f89b2b67375d7aaf19ca42f5e3d255691c0ab097c42fbc47. 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/TCAJG2536527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93716622e5990460fda629f9aba3875eae945c031a533eb7f61f9266f25e21d1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJH2536531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edc246089ea118510933babb109a5aa4fa9705764850e3571f8770306335187. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAJG2536535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13404a23f7a6d3fcf109a8b2e706c14a956c8542dc05570a1728f305bb8b7d0b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJG2536538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cbb53e6e0934711394c91123063d8e0d411fa9d61a5f38a5e4e448de7fc392. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJG2536544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1bd8df60e218ddc13139b4f181f9c37b25da912d00625d80e8e98172faa71f. 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/TCAJG2536548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8ac643cec0b126297f33f8f8455582de6052c2fced1c1ca6e70d02e3f6c72c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJG2536550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa5fa771e38cad5f5f48eb8ee17a525039f9ecc131573d07b782b5e1f30deba. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJG2536556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7935b75a92651c5dbd0767622056d61e6e162f4133536a5ea509b909b5d44. 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/TCAJK2523842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080f289088542cc58e70cd17d2046601e79b3dbb9550027f506622c70528d5ca. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:12Z), 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/TCAJL2523845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d4a71dcf94fe4ca99058d1b765121c4b1520b2f6d0ecc302df4e1697ee77dc. 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/TCAJK2523847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ce428e831f31448f5d9213d41ba2cc5ff21dfc6551e3cd03dac4442c2c63b8. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJK2523848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2671cddffc60f6bae28606ce279771cb92cd73ae176fb1edaf98cb4730c80d7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJK2523850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b8a8fee93cea94973f33a87972b626d23673a205ff2e845214e693b12917ac. 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/TCAJK2523852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b06b38d38aafd7360bd0883fb2279562f492768cfebde852350948eadbe79a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAJK2523855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd28bbf9f2245664cf8d7e972e9d18675ae26525f323943e957f97da7a7530d8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:01:53Z), 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/TCAJK2523858.