thumb|Faroe stamp by Anker Eli Petersen depicting the magical sword Gram In mythology, legend or fiction, a magic sword is a sword with magical powers or other supernatural qualities. Renowned swords
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 0xc62860dcfc0d35c7690ac98b7cad5dd2661bc6a9e667bdf1e557332151525b98. 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/dca92b7c-d29e-4b78-9517-99504190a2dd.json and https://artists.proofprofile.net/proofs/artist/dca92b7c-d29e-4b78-9517-99504190a2dd.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 0xc467f752fc3703b0e4f668214a55ff93f41e1f2c48c59f11293f78d590ca0931. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QMM3X1405110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7662b8d425dc87c0ae5dbe199803265dc11b62e5ffd2033c835b0b43656c890b. 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/QMM3X1405101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7706e15e4b41f28689198fc80d2ef1ee0a804bdafb2b878f1c263a2ba1e519de. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:45:57Z), 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/QMM3X1405103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85a577aa53c0ab01496f230e333c36868ad70889a410d6530b87e3c8dc3d65. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMM3X1405105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb5dd50d0c8f647df3659ae44d0feaae00f104f9eef617f069f6eb84d44d6a1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMM3X1405111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b99ab4f95a9c2dc36452e5f3654ada6d367082321bbc9e2aea2806a3d6c683. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:34Z), 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/QMM3X1405114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256b9f8f769827f15bd1bdc1797f2ef6b7ec421ad5e19504fa791b4be2262b36. 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/QMM3X1405115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612044dbb3643d718b06797a1ee42fd0c299ba83f8e708e5806ad232224253e7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:02:17Z), 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/QMM3X1405116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d63f1a070c6c5d924a3068a5ab5a24e39624ec79a1fbb99caa7b7b18c7bb38d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMM3X1405117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581c99d1a6ee22ce366f47dee9e63133b5a0e2d759d0977f1e9fa3f7a402d108. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:03Z), 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/GBXGT1600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60cfe061f81b610ceed4566ae88b0c827d5704eee3d88361b7f7aa3219b89f0. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBXGT1600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba3e10489229408eea7686ac23f6500aeccafc824a3fe721659bdc27e8097c6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCADS1878542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2311d0066ebaa004dc0b1e5c9c7644d5f22f5739ffd3a5e2a8f9e8922eb573. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:00:17Z), 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/TCADX1898223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6ee952225ad22b80ea173f938769e98ef35a720e63dc6d29cf03107a6bdb89. 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/USJZA1931105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e924df3b9753d4270abf5e0c194f5f4e688ca91ae382ee67939c5097c5e79. 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/USJZA1931102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62704ff58b52e90cc55e58a2b159b70fb7beb92afb908390c0aafbe73ebb4d1c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:45:03Z), 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/USJZA2032807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cfd9dac309de465c9938f89dee46092fb40649dc79d792268302aeadbfaef0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USJZA2032810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf483f05c84a569dd17b26987a73380d386ea050327308e483fb9fcd4f160d98. 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/USJZA2032811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4f05c33be4c98a8dbb9dae704b3b8c74248ba1018668623050a1c00da68c36. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:57Z), 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/USJZA2032813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61998d3f265bc9087a84db2ca7cbf595b76328bf5e84a6cd947592374d402cea. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USJZA2032814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7277fac428e880d4f50e0542592007d261b10f58f3e5442b4aa7d809c3679abe. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USJZA2238401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ba0281c7221d5d1c207a1f7e3e27f378c93bb1b500d718d8b787820ad3202c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USJZA2238402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e4679ec444cbc8071b66b80e9e00b75e7dc80676cffb860fa18d7a6eb95009. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USJZA2238403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a006c864f332fd595a09ca571d4a4c3f91fcc8c132a7c6b30ca7d8f62ad068. 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/USJZA2345212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a72091e3195ffce55bd2baad83f09fec0539034c4b6dad443b7b4af0839a311. 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/USJZA2345213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c650fd1cbab04d313527e3aa215a30d59c0d31fefdf55746fbc4f52489641a. 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/USJZA2345214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00da6b2d46f00639b1ce92bcddb730c8f29fd0508e3c2130263805870b83ab66. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USJZA2345215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57065ce2ac47d686a0c4883856c02108cfddfaa0a9d5efbc9e840357c432efb8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:52Z), 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/USJZA2345216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a70444c6b7e0f07eb602f43e0d85b3f5a1d9c1825e72a7452844675485cf41. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USJZA2345217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fd535131e6b20cde94add2ed40fa2a5a22a0e1835e27032683276b939fc0a6. 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/USJZA2345218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f1a8e6f7d9f3c4b0a8dbc338f5903936f48d39f349975ff3b1e9c3c6fc3478. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:44Z), 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/USJZA2345220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb43237015b71b9874a0b671531af563aa36e089a8971049163e0ef11a608dc. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USJZA2346701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eeff6048f5f7e736e42c546e8681e769b301b2c483f40e062069db37ce2298. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USJZA2346602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6367389c5ef1ae8dd8a51e70c2b4841bce8f0772ddd6011d4ada60ea01237. 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/USKRS2273301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dc671a1a403a1c30e2b6f2a85a74dda2c5e529b9aefb1d8b511ec983149022. 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/CAOPL2100224.