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 0xdef3519bf5af0035b8c39b178077711ff9e5b705faa8129fff40ae0af68a1877. 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/b7dad70d-e841-4cb3-a339-712f67641a1d.json and https://artists.proofprofile.net/proofs/artist/b7dad70d-e841-4cb3-a339-712f67641a1d.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 0x9c1920622260af2824762cdd2e97b7407f76b12a1a733953302ee2e2d7079841. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/MXUM70601699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ddd728715e8248929e435eea8587bb87fe6dcd67d4f2235617fff453329ba. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/MXUM70601700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3429f7a29caab5c3f757636aef8d3f445b2a26deac1dfc5efb6810e16fe482d9. 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/MXUM70601701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eddc4d3cf7db639e2e98e57c61d7e00e8123f275b4e443cc25351cd6b1eda1. 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/MXUM70601702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d5576e277eff1fd8e6e805e9fb7f20df4a70131a733d9335ddce046a9db4d7. 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/MXUM70601704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad63e14a1c00e6331c9614e8dad893e61413633c1f71f3a654f13b89f567c3b5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:56Z), 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/MXUM70601706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda787d2dae78cffe18b2109e591f1c2aae8572ac203fdae55d3dfc081b1e624. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:08:40Z), 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/MXUM70900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295de50d9b85149fb4ddae663247827bad3a24b10173349e2ea2034d2fb9c794. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/MXUM70900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7442fdd748b5c28a0fda52405e2723b8a6daedcab78dfbefdd545a916538b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:23Z), 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/MXUM70900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb658bffb7ff1e44f6fb11e2e9792382fc2766dd37d1a9a412ec247afb29ab296. 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/MXUM70900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289c4175f0923524d9c4402ff00fb33afa5c06968e185ff29b9b98c983da7dc5. 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/MXUM70900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61109ccd81750e3b56ecae10e6f86357865df3cc29088257d9784f24d6a7228. 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/MXUM70900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad18f1fb3956cb2700120bb5ac3325352b1f5bd6f89d414120544cad98f7fda9. 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/MXUM70900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbe76a429dc804e8a9d16beab5ae868676ff618a5d60f80bbfd0012130268ce. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:22Z), 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/MXUM70900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986e59ffd0f6c2605a312581c43d07b3d783642de48cfb887946a70f29005b3f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:17:11Z), 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/MX1981100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6178f4b19e65a2d0b9c4bef2dcf3d729b0b15d118f8b59b61b1a4a9a7cbdd164. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:50Z), 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/MX1981100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc4a310c6d0b93c58df729e0b088bd99d73732a76b980245fb7e75f7c76d6b0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:16Z), 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/MX1981100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd9fe75240b2ae097fbfb9cf38ac9fa5d0dfb76b950a8d7c1f17fcecc591725. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/MX1981100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed342ee9b056dd56171a60e4fb9657e118b60a35687c5fe0aadde0a929c10a8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:00:53Z), 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/MX1981100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbb4438d1ece3b0ce535b6943ef9ca2804ed0e404e1d53bb8b600c84381cab5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:49:50Z), 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/FR96X1846987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe537713760cb317c67d2f3ec76a2dc804837edab683911006727be1354dd860a. 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/FR10S1904685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925ab6f8a8c143991e91a8086f877b8a86c59df0bd7f2be95d2e18edeecbd30. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR10S1978349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f924d6b43662498b808a3041505993d6bcde11da23e5edadcb9506f5099e70. 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/FR2X41967648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ac5b970ce07338985525cac70e408a35fb1f56319c390f5906435ad1a45ffd. 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/FR59R1978461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7bd5994eeafe05b214c702341e099cf6c7307d76302c2bad21e08eb960970f. 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/FRX201905892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908065be89c9bc7c3d2aee65409d5e70d8535595e1ce823212135d854e7a27fa. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:52:19Z), 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/DGA082345178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908065be89c9bc7c3d2aee65409d5e70d8535595e1ce823212135d854e7a27fa. 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/DGA082345178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ec87e4c8f8f2b1106966b1b2d152f23380b12bf07e0904607cc5329079a0b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR96X2208826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b9b892c518fcf9d6b795a16b8c46182f0110ada6c6a2a8eed289f79a3a91ff. 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/FR96X2208823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c4c4ac635d5ecb8f7cb1e62b2c09dd843da72a104c4c8c4de938da436f215c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:11Z), 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/FR10S2228358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dc05af421c90f35c0fabf86bfa524a298537e9b9ffdfa5369539486eab8269. 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/FR10S2228357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93445054d491a88c87ebbe0c855d3070fc9e68fb0fdde7f8b74aad9d7eebadb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42495868.