thumb|The Magic Circle, by John William Waterhouse (1886), portrays a woman using a wand to create a ritual space. A wand is a thin, light-weight rod that is held with one hand, and is traditionally
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 0xc3d09fb70c492ee53f55e3f319cca87ca80848afa265a54b26c80bfc01c7e53a. 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/6f28057f-3da2-414f-8bd4-dade767e4f30.json and https://artists.proofprofile.net/proofs/artist/6f28057f-3da2-414f-8bd4-dade767e4f30.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 0x352c4b2096c4c1dce7f366e60622c58df55832bfdb0d44389a92082f3c06b6ea. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USA3D1510006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb89e328742fef88cd5656fd55b5051ef7f7f4d2090080e80b2e34b87606482. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USA3D1510008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03cc811724775344ce95225d2333f2727b97303e62704c49d778a22336c9797. 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/USA3D1510009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e25e32ea6ee3740899c9cc3122985a804094321e54a372bca47ba82dbb97d5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA3D1510066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99de4fda91db808471f1df2d1d70b87063a7da6e9989cb0dd643675d732fcd28. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US58L1562502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8c62dacf470841be48be901d5caae1507f1f3908d28d5fcb4d185438868019. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:49:57Z), 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/US58L1562505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07709213f18d2410f35e40a9062ebd1185158af8f9780ee5704a577a49ac2e55. 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/US58L1562506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b69e31f1f3f5816e99c558d39a7164ff31d88673f44e2861b538dc5249a8ae. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/US58L1562509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f74d237a7f8398eaa175e8b85abc67654617dc47ca82a15a090d5f726db27. 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/US58L1562510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea988aae30ad1cb1df29fda915f86e087decfd3f111b50de19bf1f790db51249. 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/US58L1562512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a63eea491eeaa8bea55a84eb9ab4c9b589742268fd51ea9f2d48d987c5d7d. 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/US58L1767304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3642d1482e26c7a147a67850edd3a7af9f21e750eda379adc8a243dcfefc1d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:46:00Z), 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/US58L1767305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46d7f8bb5952448c52b78927141e80c29bcc5da9f648e002197ebec0ec1fa6d. 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/US58L1767307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6a6bbb4db05e62cf0eee2706707bdf8bc233ad550b3cba077d5c66770830e. 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/US58L1767308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b2e4f49ea0c49ec3e5cc5feac3439d1cd2b58b137e224efe75f4c5b93b8aa9. 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/US58L1767309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85da3517b96fd37b115c4ec833e43815c7cd2675a05504c2c350d2e2c29fdccc. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US58L1767310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf909bfba5b62a5a364aec2b07c2ddb4bc8941320a1c1c1d98ab8dd30aa3da2f. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/US58L1870703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a35ad361b6dcbac3901d27d55293ea27b2d7d04fea8369384468a6c71efa7cf. 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/US58L1870707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae36ca853b8811a7dc6777225c4590e0a0d0de6792366b0837450e01d939d0. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US58L1974403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7dd701496d85539605df686b9845775d344ade837c35d5174ff79af7770a38. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:56Z), 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/US58L1974404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61418abce205b57923ad9034bd0087609dd1f9f9ff4143ff2d05aca160ac2b8c. 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/US58L1974405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3814d05673eada11ebefc12a15d88e443bf8f1d1ce1a044fd31df00eef033097. 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/US58L1974407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd695229a46be495bceecc46042923c627e98223dec79ce719db6eacdb117335a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US58L1974409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599f88a8d480e6a93a453b438ec4f4ad08774afeb4dfaf19576ec972cb71e0bc. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/US58L1974412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7700231f545ec8ea8e6b88160b5860ad919aa090e09f7ae40b848ceb43154c04. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US58L2492501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fc0a870b771e9129abf13c98788f1445854f51ca7a9a12cadeda8c073b488e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US58L2486505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944b07a4ed8ad705350440df8f1d82c01772731370767ec34538e5797206a734. 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/US58L2486506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0580de1b7616511c8c2dee0af749e109abe62113f7fcaa6868801bbc75b69082. 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/US58L2486507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb509da3e44093b3574c561796686d0f7a19c94b4d4595c1d0f4091a1f52cd09d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/US58L2486508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bebac04c89b58723e369c94f2611d4d0ca4155751e2046f4facee00698b7d66. 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/US58L2492502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0884a4d4dd61f0495e574f75443aa0a95a723ae98534297318f98dad3ca0701e. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T12:59:44Z), 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/US58L2492503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b618741b330f955f7d413e1238961f61b9b04ca3c44c25d9f73e7aa811df67. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US58L2492201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d0bd1ccb89c7fa9a55763d07e4faf558d5b2887d6a74cb7bddcbe130ed38a. 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/US58L2492202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25fced0bb3f123734f45093999ea1db0a2bbb2f0cc9ade2b666a29e62dc40b4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:22:37Z), 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/US58L2492203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e59bb91d2d7b7c3269a507015dd33d8e43d9698e1c2503095cdef828dd4cc6. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/US58L2492204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5a428ac28e9460eeb4ff40c12f4d1941d7afedf9f4f84c09b013aa7bf39f21. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US58L2492205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dd64202838e846053330f9e2ad92d8584b7963817582ec0c40ee4d0eaec5ee. 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/US58L2492206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4296f12b27333253d5f6be08813dc8749f903279a18e3ce1746a6d93ba0c2d4e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US58L2492207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e68c6e8154638bf7b989128451d2a180f7491d6bd61993538855eb216232385. 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/US58L2492208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110f3e3424d26b00fd9e719e0c8fcf07c4a56f999a666df9e60109f22c14781f. 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/US58L2492209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f73c08acd0f9d0c8024df543d79bdc2221521616336604de6601955d825f90. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/US58L2492210.