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 0xbf7fcbc32e7a938591b68cdbede8f3b28b8ded1f01b06092342e7c3e0ce021bf. 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/6003ee58-c913-4f1c-aefb-3b4ac9d37476.json and https://artists.proofprofile.net/proofs/artist/6003ee58-c913-4f1c-aefb-3b4ac9d37476.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 0x2864ab49fb39e6164cebf0fdcd14cd84728d525d8c1e70f136d095e45d0a3b26. 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/USN630910001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35419d44e3791ea2b48cbaf95bea4d7514cd1aa7968afa51e46d6177d0253ae9. 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/USN630910002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0610dd2def7c70b23c195db99c3d83fe451141f571a455f8168b7fdd4656ef0. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USN630910003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef9ed132d157822acf7992738e019531f583285f663bfdf72fbbebeb3541a7c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USN630910004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb85e32633a4a46f729667179760c3a8219e5679ba4176efc44a4991df4e2f0a. 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/USN630910005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536494ef628a8fe62ae11928e2d024ab4acd1363829fc835eab6c1abeacb79d3. 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/USN630910008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ad809ad5f732de04dcd64d7508d0e7029b45d4178f079bbef005dafdd9427. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:16Z), 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/TCAEE1902681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665799489563f7cc5927c15cfd355d149c58d8ff76b2e0f0a3c799e252896e0e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:05Z), 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/TCAEE1905579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9edd07e39034b648c2d2b1b04f1fe15a361b4ad6941fcfc5e4905c45d57b44. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAEE1903204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d37af611a6da2660a297dcd602208df776e5255d2bd1363e2ba45c8bca7219c. 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/TCAEE1905381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb939fb5408c94c12f03b1d5cbf4251fc91d5e99aef799cffae9b786f5b16dbbd. 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/TCAEE1903065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208dd035a1c9ec2f507a02f20e6e46dc0537581a023d978b5240dddebabc5dec. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:13:15Z), 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/TCAEE1905607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5347fefe32574d3a1a781ec8a42117dcb991d075472a14531a1b792ed6d044e9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:11Z), 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/TCAEE1905670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf4811c343cbd11ff73785c636bcc6d2e19a11cc74956f7b7937f6262c6f9da. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAFS2160695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb98483ca4a15cdaa2ec2a09b726a37348a0698bbba3eab88ac2d3909a830e88. 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/TCAFX2136630.
Popurrí Polkero (De Texas a California & La Pequeñita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77680bc01cfc495972d08696d0a5f12a1facfeeb8b37a0bf33eb4ff13f20a2a3. 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/TCAGD2275283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff94239236dcec61af9597b7daea3aff6b78621550c71c2f056a60b46d9b88. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAGW2327712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d039caea59d038abcad87e47c10667c7ca65012a7f68e711522656997f8d0d. 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/TCAGW2327732.
Popurri Machin (Mis Tres Animales) [Pakas De a Kilo][Rayo De Sinaloa] [Lamberto Quintero]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66d9c0f4c3cd8e73c273b617b80f589964e21c94d4cff481c3e4adcfb1e944b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:05Z), 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/TCAJC2466489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edc1ac76c8c1d10fe99ae48e73773f6a6f673d3fd111b72c1f2a7ad9447002c. 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/TCAJF2565246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92889c785ad9001e8c589c11e1ebb6927ec54d9ea8576777c678be1484d581b0. 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/TCAJF2565283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa6a222ff1f14645d11fcd7a84be408995c02b22663fa323799f9034ad81994. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCAJF2565359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957b5ddbf79a7ac2ecbd2eb81aa47b8187df39d1479c5f449396d6596e03ab6f. 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/TCAJF2565348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e30b1dfdad7d83ea34cb13f039fafdfcd57c7340c52f27e8f5855d088476d4. 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/TCAJF2565321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4416ce5cb2835758d92f93eb2bb4814ead7e255856fa40c2f8dc75dc395a443. 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/TCAJF2565392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cc283eaedcaf1b853ea44748fee422f283ea98257ed1d910d4c8cce1542365. 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/TCAJW2508599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a25febcffdd09e13f5b5f4f00d02f1f825bc7be9171b22bb01e67b16d832d4. 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/TCAJW2508627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3242db00dff5c3ad1bd1caeebdab84bdf231cb3ba68ad4890b459ada600d0cda. 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/TCAJW2508674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8730d9597d7cb091dd3a33e462e39d2fd4cf036ad507cfd0b10007f8513c3613. 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/TCAJW2508676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026bbe28105c79242e1d53af36737119eb1c97a8d7c52e03cd97398f92e42c01. 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/TCAJW2508694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2037897efeba5a4dbb490578a228e1ccbc67ec4be3e96e5ed3fe73b6f4e74c. 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/TCAJW2508943.