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 0xfe1013966bf1c78c1c5e5f2ac7096f2ccc7c199bc5203591b426b482c1512dd7. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d99fa39e-f2c4-4557-9cee-67962cc48e84.json and https://artists.proofprofile.net/proofs/artist/d99fa39e-f2c4-4557-9cee-67962cc48e84.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 0xac1a740361948057957326ec54bb7850108a0e156711a1b7dd8fb877af20e539. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2319146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbb7083afd4e7f04ee2c33250856e06f58b56fa6a051fca288d75bc16d7b170. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZG2X2411498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32812a0a23c0a3d7ca62596bbd747d0e19e3b611d5a9759651518e4509dbbf58. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZG2X2411499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7594a38b1ddd099435a8d5d7a587e506c129785b27724247d4519753c01f935. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZG2X2411501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec8934432e577dc1332fb10ae318f4d3f0d6bee80151f3ebb7ed3aca079e806. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZG2X2411502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16eb475ea0f5e9f4daaafbbf49540a98c58c720aa277970ee3c4bce2ee2d8cf. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZG2X2411504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a70688f4dea8b501c92fe6e2459fbf4eed221f242570928d714360a553f034. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZG2X2411505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d8af4ed841eaee0663321c2a9a7eb59c14475347e7dfd6ec9d9165fb2d6112. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZG2X2411506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb033fc2e4464c32a552b20e7b279e30902ba643f4b258687bd469b520cf3519. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QZG2X2411509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f16a60cd62266e10da75a5f45907965a5fdb1836465595d8113f74655b4e9ed. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZG2X2411510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b943fa095a4a1f373e2cc82165ce24e53d077d9024abf1f4725cee836a8839. 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/QZG2X2411515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017b54e19168966def278b8ec24e84f443d58192fbd857bb0674ce759e5fb4ed. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZG2X2411521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2952cc73f205aab7b513dcab917a37208366bf561389ade09bc2b4cd0084116d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZG2X2411525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4942659b4565914bd34a6bec04f1f9dab79df0eb53d60e24d4833523d54f10d2. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZG2X2411528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555e3d511108844996fe9a334aeda070e203ce585ebbf58914f2e866db0355ae. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZMHL2341059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe284f7bc5e720e6628896d9500224d2c7355163098ddf691d0c534a3f8c4e752. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZS652357206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa275140580591e835e8c9095908178e3dd5a6b4bde53860950958df3d09db16e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS642341977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68080adf9287619f79d6d3892ae5da58e03d7c657ad1035a9e617f8f1b39b16. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZS652333769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2445228dc1b5f8cd408d64ced43de6a59eabda4f733f83333c3349f39297665a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS652364480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a3266c6b990126bd83b41f616926d164683749b3972fbdf93e6fd7b7515ffd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM42K2353480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e53fc37f5266ddc5d115e25f11ff3f74a32eea9420ea48ee3702e4cf6fa7587. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QM42K2321495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6636a7d93be14d2e3b73b330187cac7ab46a5e87e8e071f39c280396cc81067. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2427789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a80fe4d084cbf1d32251898012aca140f8a48337cec83a5342db3056802d310. 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/GBKQU2344579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fcdbe314893bbcd67f659e870adfdc0a299400e9b52246120ce8afcff3e800. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZMHM2514526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaf270a7f035dcb6703bcaaac9bb18dad444fb2a448f80ed47f26d8c80cb123. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM42K2586603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3661fe4d6e33ecb4ccd29ff5406caa0c6ca3f7524737019733d7b5eb3bab2b. 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/QZMHL2532927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d39bab31844c503b2cb509d40bd700de22fd1fe902f5464ed10ab4543655c3. 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/QZS632579508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef072536ce882f3816327f0a345d1e167d9c50cb027ecb588714190dafaec8d. 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/QZS632523886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a5b51a46c33405394bf126ec44c94320899b06c20a46d566dd4774b1ce953d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMHM2561905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f33a21c4b284ecc9b4eea7d9621c60f4bc69f916bfb06b7f21b63d2a6c97b06. 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/QZS632535086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaedf8d75bde27c339e59eb2689c707e72424f47404a7fa42ece692ba67fd218. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZS642510904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bee36173b3266084a4e8f30f5457d01713c775bc0961c038cb6d808caa63f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHM2503492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61ca905be519be29fc4ecdd564557e2abdf14e5a87c0eb3d463cf3145fbbb97. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZS632578398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a6d8ffae661bb69b1fa46d49e956e57e11aa6da0a3d658674cfe5c80817d5e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZMHL2562698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeef48276ecfde7ccaabb12772042d84669fb3be630e0e342b2c2ce93be03c80. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2338593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd241d2ec18e901a04c7ffe086f95d45d06194e1454de1b1ec95b863ef9f753. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2338599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eb5403d26c480906804f17931d191f92ca7ec4825ac2a4b09391752a7d7c19. 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/GBKQU2338601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c31853af7e184d0cf39af7b643ab38d313601594e352c1d300df7b3c18bc07e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZMHK2573650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af5ef41bf7ebc8955ccba01fa27790c5b2c89e43949dfec1df0558a05340e5a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHM2587090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6577390371889a2f3b28a3291c8e4d13998396af19b4c868c8c12e2a3518238. 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/QZS652313187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1f52c1d4000d6b51034a699887d65cffe691aa853c0a83c6b8cd2af48f301. 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/QZMHP2302581.
Absolutely Energy! Workout Selections 012