thumb|Hands with stigmata, depicted on a Franciscan church in Lienz, Austria thumb|St Catherine fainting from the stigmata by Il Sodoma, Church of Saint Pantaleon, Alsace, France Stigmata (, plural o
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 0xe9cd529e407d4275acf401cd152ffba14dc75873105f919061e29ba1f3ff80cd. 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/1100b24f-19a2-4e18-a37b-1b5fd8bf2e9e.json and https://artists.proofprofile.net/proofs/artist/1100b24f-19a2-4e18-a37b-1b5fd8bf2e9e.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 0x186b19ef36dbdbb951a662a947fdb0d81af0aab3f9dee770c8594c39b1dbbf1f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUB241760802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7827182e56c1585a6692e19e6c12e2963e0134339f9b9a6704b5fc5d0b8ca34d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUB241760803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0218431018b3d8b6fb24d54a7287c91c0f08ef9a111d01cbbe7a766d5b466ff. 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/RUB241760805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d266f9a83b402d4368d83496d0ee9f9f3cc72f1ed7e9b7ff034e67a18d8c26. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/RUB241760808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a72e9c03f57aaf92157126547c87348ffe1307eedd837008852b0442e0478c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUB241760901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f484893ff2639192c5de5238d63632ab91abadf8db7d98e2c27f26ff2e4983. 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/RUB241760902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1d7c9bf7cd3774cb8e4eae549be382fd0e27f387d2a4d8dcf55fc0a8d76be6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RUB241760904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ed984aaf5ef61cdbd1998900c460ce1519ce6eba4bba96e5d7f364cc8ffec. 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/RUB241760905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f6cb5751b6104c7754d67360b8b1c6f51e5fe95f34a54d071ef65f844a3c40. 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/RUB241760907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb089f4a76dc11d1facb860d336101dfbb9b18dd84ef4ce5747965d17e7a6262. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUB241760909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f416b8d26c18b943f83ce8d2c1a83f3901cb7b93005fe1d4b8b24ce7fad5f4. 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/RUB241760912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cfb1782d23b176a8756ad5c6739ddc4cccbb0e7bbb70b494f5ab68665959ac. 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/RUB241761102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f3a7e0ad6a9c607b7ba7c439eb5ccdc9981133bd7167ea52e65b7ab698db99. 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/RUB241761104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5597bedfed261b85cb23c924b85f22894bbacdd89254f77e698dc9bb82ff9443. 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/RUB241761108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8aa855d1a77b4e01b9c385514e76ce1676ac4cdd763bedd098d30afdf132de. 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/RUB241761109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0112c62aad3b57e58a1beac2c247b5d5a287bd14c991355412fe0794d9691b. 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/RUB241761111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc4f9d82f7bb0ae755ea280ec3730a27d68560156e4ee5325cf896fce2ececc. 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/RUB241761202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359691c8688e8ed99436ffd122c368822fe415b627a6352e98cfd1603b0b21e9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/RUB241761205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b63a96edb6dbfc2a1a46b2eedadccdfadcf4a44a48930b4196b02105b76b56. 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/RUB241761210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be8ad39b8a29842f802277033766fa986b50e6354d36358a655cdb8e9bb3e72. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/RUB241761211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa421e639f2d486d2f865304332f08c6b9ddb1348526251c19a41388b8459fd77. 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/RUB241761301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b12a8b3beab9dd2a91ef5fae491371870b56e5edc24136bb5309f16158b6cf. 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/RUB241761302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1b29601f215f050866f15f09b79aaecbc72bdb6bc5fa1eefca580fb35f6a34. 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/RUB241761305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4535aebf69c73c3e0471a43382312c6e47dd447ddad2fcb3df70bb1d92d94612. 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/RUB241761306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8db2db2af394f3a7ff3ef7b11965c7d95a1dbac2c8ffe711521f447b65a7322. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUB241761307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050fa0e0c7f85e5bf5d3f92aea5f1b7a6e2f8330be308e51fe682c1c0437cda4. 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/RUB241761309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757dd66f26362990d8e32e7c37d4faad16be60f7449738a622dc5da9514166a8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUB241761310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2593d2604d655da235b311d40a3b0d47e3d5635864937acab9ef6b37fc5e6ebd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUB241761701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26de5e28d0b3dcb8182ab4a787326969444c369806ad1f70149542204b71503f. 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/RUB241761703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103a8f4a23260b67651050651ea36c3033ca2b4f41c01c4f51b931f960b39d8c. 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/RUB241761704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf9e77d543804e48ca9df1037fab38ecf8e3645c28ed7cdc742d7fa25a5f939. 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/RUB241761706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5d25b52bcf06874ab180fc31b64a7ed74e2dd4b579371774bf6b824cf1b5b9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/RUB241761707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f83359c28a2832db9321d9a9c0bce1fcdfa1228663a0234c7d6139be5c9f53. 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/RUB241761708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed22ec31cf35671b27c5e9aca1f0a4d2b5b6771c622e4fc8b173c675b7dfa2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:27Z), 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/RUB241969101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472383777c89675cfc8459a428313fd1ca14dcf82dd6040a00bacf6bcb9383c0. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/RUB241969903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0a05b9123abfb7508acec8766f06eaac4a2ab289a573ed11894318e5283337. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:44:55Z), 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/RUB241969904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0952d1eb71dea779bb729666b6963414bea3a97a56d0becb67dc333ac9fc56e. 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/QZW9M2265453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6149343053b5c199ec7c8e2b1ab50f639bdbc03f49e9819db5f50ceb22f8c74c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:18Z), 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/QZ5FN2470482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8797a39ebe883b84a408ae3d145e911b573c8d70d7b7369be9ce6361bc20e4ec. 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/QZTV32447939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597a03941cb9dab70173a87a1d2b5c88f90920411b36cce3efcf81b48d86f8f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:49:34Z), 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/QZWDD2446959.