A bridge is a structure designed to span an obstacle, such as a river or valley, allowing vehicles, pedestrians, and other loads to pass across. Most bridges consist of a flat deck, supported by beams
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 0x79e550cb5cbe409042eca2d898c39676331243c9b553a924918c9edd6a17d0d8. 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/4d11924d-6441-42e9-a207-be1d98a07d41.json and https://artists.proofprofile.net/proofs/artist/4d11924d-6441-42e9-a207-be1d98a07d41.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 0xd1821cf645a8f06270e1dfe0eb30d45c8ef4cc9af97b5375add89e9d3573b70c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:12Z), 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/USWB11701381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f01cd41fe569cc7d5a1c80390407a89245fdd15978325695fd9802b1b252bad. 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/USWB11701633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8542d5065b7e57609447ae37146795bfd094cf40777efcd4250b8f3f9bba2b03. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USWB11602439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40131edef08336971b6eb240652f63cf3664bf8364be49d437acd06350b408c5. 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/USWB11701396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1821cf645a8f06270e1dfe0eb30d45c8ef4cc9af97b5375add89e9d3573b70c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:51:55Z), 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/USWB11701381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9410c3d4f7b3eca66d8294c8aa643daf5d96116dfb196dc15a8702d95481fca. 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/USWB11701397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195684c06da7e287e2e6aff96aa973fc33a8937b9a34fa575dd8742fc4a2a2a8. 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/USWB11701398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e917c43dc5d5b306d7258c347ef4b306af89af3e6e6d513ec826b1a0618b04. 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/USWB11701400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bffb9eeaf534df65a5bf0a7409d0ee3851ff0e21a80d3a924345ae7f9ee5430. 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/USWB11701403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6f562b4a1485033b3dc664872fa9b5d3ddc066784b6432afa19eff9c21536f. 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/USUYG1216816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecd1fb342f3f19b54187258578d0e58212dc80f664c2065c7f35bccfacea591. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USUYG1216824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9eaed83ff83f82c4a61dfe71d4d63d1d6d2f3003f990080b14e9f11b4d08d1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USUYG1233614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a06c382a459e3f431bd7d2d81ff7a6588a1863d2008f68769db178b6525220. 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/USUYG1236821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0112a73be6f68ebfd3c348b8c52b63f6fc5d5f7d0f7f115e78b2d3384798bef. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM24S1911368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75daa10679c97b9f7461cada660c5431d60ac8924b70f4802b2d1300ae60c3a8. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QM24S1920630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226d8e708bc07ff53ab20bc0e6683bf4e91a2d7fd45fda687e7becc88987085a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM24S1911369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9eaed83ff83f82c4a61dfe71d4d63d1d6d2f3003f990080b14e9f11b4d08d1. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:49Z), 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/USUYG1233614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f00e655bfd7ff209c396a7d46a25f5953e690dd55c4a71329a78986558b483. 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/QZHNC2099888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8662c4f4a07612879dbef2e177f4e32894a2d343a03fcb53c133c3172411c663. 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/QZK6L2050011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2afa09c57780fee4a5f26d5a442d156aecdfa7e49095a0e5707c74a2917b1dc. 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/QZMEM2099044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38d6d4f6a208bcb78dc8691b0e0c3071998af54fed2536a79ef5c0f0845e15b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/USLD91732973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f9c36c3b5334e45022605470cb64d7e6f3a0ccd3779d14196535b1c4028ee. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:27:32Z), 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/QZLL92245633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff328de726d6d63b34e45536b79b4f739d6ae5ee227930bcfdb1a6781ecf6a8. 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/QZLL92245635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac8d43d7ad260afc613e1b367fbce6cf7773714fad34a7b642649450828d3f9. 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/QZNMU2283107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745ed5b815cb609922622152447adee56d8c68ffe1ea0e59949db47c892ef93a. 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/QZNMU2283108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa281ea8cfdb22f11246f49ac20a6c8fc4d6fdbbef30c7cf0ad2415a00a968852. 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/QZNMU2283109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4789fdba186f97f9edcc09a4b40b7087e309250d7a0d59671246665f5f30b7ee. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNMU2283110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4ab08fe8eeba5135aba2fc72e3e4ee4fb238ef2ee87a13e5fc92f39a978df. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:03:30Z), 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/QZNMX2279768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc044b55222f7e94221592aa73d98e297514de2b9ad2d8a3f4f656924cf001ecb. 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/QZMEV2311002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b61bcdba1a67665b3c52ae8fa09e491de50a9232611959895b621afefa5d63b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMEV2311003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be750a7ff061eab034c68f23125bc720bc1561fd5c08b07db3b3d4a4d10af6b. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZQAY2397067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0d117abef116732966511f5d1dd68c18d1b4a86aa9a8d859b11200d99983b6. 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/QZQAY2374183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a97ba9f570e3ac40c1bbef7db2ee6cd1c61593fec68bf373b1bdd7465a1484. 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/QZQAY2361357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e72dfd7c70400cb494fdf27638ccf12cd8d02aa12c29245aee2fadab7d51ad1. 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/QZS7J2352432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b96ec7196e5e1729f483ce1480b571cb93823805c9a61850c0f33e9f3b5139b. 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/QZS7J2312983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd855205eabc0e1ba6d5d1625852645083a7e4dbbd4ff9dc026e7389632caa50. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:28Z), 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/QZS7J2393908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d046216b9883e996ac1b6236d1aade80f716f0a58b1f7efdd4e8808590f93d8. 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/USA2P2402636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa373777faee42fcb23e30f1313231904bfc26c88ecc4a0d18d77fb4d846f3371. 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/USA2P2402637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8d825c38229e400dea8e1313c39104344af001d105aa91fb1cdd20fadb0df6. 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/USA2P2416857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9ec873a8269a7a6eac3646c758f4404d687619cbeb30e233598d0cf8068dfe. 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/USUS11900155.
Christmas Cocktails With Santa's Swingin' Stocking Fillers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302b66a6940c38b9a7060e1d867ed05bea8a50235f74ec0f171e333b463d851. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBLY9900427.