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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0b2e87611cc5878efd2b67fcfb997b2967ad4073f13472b2c46e8330460aba. 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/90e0d045-9f45-403d-a117-ae1b41b01b62.json and https://artists.proofprofile.net/proofs/artist/90e0d045-9f45-403d-a117-ae1b41b01b62.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853110136954afdd3cd5057a4348ebc7d5235537eda6d96922e8fba61b8863a9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDHM2100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c9a5e477362a3c216bc04f91827763b29a29109b6b64df77e397df3a5fc3f1. 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/USDHM2100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725566e6fd754565029f14dfe2ab50c1b368a6717b1b010a65efb6bbcd409833. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USDHM2100250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a70a6c07ca878cc6d2ea7ac24c22d0fff99a33b312acc8049bcfa1a06dfdde1. 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/USDHM2100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca42257aaefed3513ae87c05687b51f4ecefc1886ecc12644803314eda3c564. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USDHM2100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88088ab69d5dbf0ca36a1ab031acdc63add796e3bf38c2260c54131b0341419a. 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/USDHM2100289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8898d3fc2a823db7d2343cb5b82a7d5f312dafc5b54c0e1f7ad6e9b4bbccd744. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USDHM2100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab78c875cc1507ee2d71a39c41161c6eec5df29deaa4a335312357feb793c02. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USDHM1720975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbd11a05bdcbfe9f0f0c135bd73f8d40b274a2673d9ba2427bfc5d99ba1edfd. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USDHM1720976.
That's My God (Written by Hannah Lindsey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247300ad61b397a31deb5b05182b6fd413af8b35080b7b885e2dffe14ec4fde0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USDHM1720977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6131c60af0553def8cd0a85279735a16b9fc347abe1e271024ee5f36ea7cf10. 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/USDHM1720978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9b2f347baba97a19a42514770615f01c2d5fd511e69d3c4ada91ed4b771ebb. 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/USDHM1720980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c251b3feaf0a3723a1bf47ed496bc19e64228a1cd97f6462852d259943230e. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USDHM1720981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee71c306774e7ca9446059d7c9c69ca80b93b0a31d7002c6f27d5a6a08dc9280. 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/USDHM1720983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ce2fa22d39a17bd044c2cb92045820601885a326c00f9b19ed4c8fb1eda6e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USDHM1720984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a4cced7c5365bb909719d7fb323798a9d49a49a777baf7513102f316e0428. 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/USDHM1922210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26778baa2c6dfc53baa22328b7ef710c6207148618fbd7e1c2c900dbae3aa318. 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/USDHM1922212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2f9192ad0024029ab67baf6709cb446a2ce1e58874cbc41a88f451d32599d7. 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/USDHM1922213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ccb0ed970530eecf7c3db9a3a4f516294cfa9498c349d2e314f65e02f9180b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDHM1922214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ecaa0135622a1b5bae70ebae72e70e2220cbda5f053a34cd839edb7216c2a9. 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/USDHM1922216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e724f82299b8e637c2f97cbaad247bda0d5754c6655a1d0000ce32ebe4926d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USDHM1922217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ed80ac2f00a9a53b67734295513498d702ed3618d2045182e89aac558c767c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USDHM1922218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecdfa4f95b1b6688e12983ba26ffc2cb2433bf97802f7bcf0bca249871139c3. 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/USDHM2118583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681d2f22175d34f04588e9b2bd5da8c651b10a3d2c99d9b6de8e5e301838a8c. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USDHM2118587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9b45feedea3aa94c5d464c22927e9ff76b8a8dc5f128808ac4e001b71ff64b. 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/USDHM2118588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e1944e7d8c26c1e936d044bb8665bff09b4b7fcf1b96e725af895da9dc7b45. 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/USDHM2118589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaea5ac8cf2498bf949002a512ecfe827767d9fe0bbdfde74b7d1b02055a8ef3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USDHM2118591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e00df068face826a40923f8181a4d9a9f40864702c7eeae90a1d31f4771237. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USDHM2118592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d55adb86b50e645576e7c17e0d139d4644d3e49b1f88a6f23f7569f744208e8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USDHM2309154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ac6137e2073dda4c59fd4b3f533d97bca998a6190d7eab594cfa66d6f787d3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USDHM2309155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f099fc0c785ffbfd8d69ded9a32f1ca12b5acc30dfaa20f4ff51088b4a4bfe0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USDHM2309156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72464b72b13ef707112648cb0013b03566f87353f0f41cd3e8bbc9ee885d2f7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USDHM2309157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b09acd02a6232920a95a7a245833d4b5b4f075323a092f5ae83945412463f1. 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/USDHM2309158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db1683a7585dcf3f58aba6e5b0657287f8020ad4100949eea6519d2d27e4ee. 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/USDHM2309159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09869485532bd63d5b96463d32493a0251d386174a544890464aa19cc106331c. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USDHM2309160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216b82b36651fbdf299ba9c9f9a59d803a1bd3b630cc8a2a600ce5e9ed6c5b25. 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/USDHM2309161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77731664771e8e16e2841e305a5a77e0b03aed675de7b3c5aabdcea3420e0a29. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USDHM2309162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bc16c65d187f17e8df699d6da8cac35b452b8c70d929692fba0c7b78db486a. 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/USDHM2309163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb887ec84e8db10123849fe980a51f2ff7ab41cd441bca958f045d91829cdf5ad. 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/USDHM2309164.